US3947426A
Expired / Lapsed
US
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Solid particle-form polymerizable polymeric material and compositions, structures and methods of employing and producing the same
Assignee: Story Chemical Corp
•
Filing: 1974-04-12
•
Granted: 1976-03-30
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Expires: 1994-04-12
Abstract
Abstract Solid particle-form, polymerizable or cross-linkable, multi-functional polymeric material containing blocked isocyanate groups wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups to produce said polymeric material, such as extrudable, thermosettable powdered blocked polyurethane (PBP) has been prepared. This material is useful per se for the manufacture of articles and may be added in combination with other materials, such as thermoplastic resins, e.g. polyethylene, polyvinyl chloride, for improving the usefulness, versatility and physical and/or chemical properties thereof. The polymeric material, such as PBP, is useful as a coating on metal and non-metallic surfaces, e.g. glass or fibrous surfaces, either as a protective coating or for the purpose of laminating such surfaces to another surface. The polymeric material, such as PBP, may be manufactured by reacting a liquid reaction admixture comprising a partially blocked polyurethane prepolymer with a chain extending reactant under conditions such that the reaction admixture is reacted in dispersed form with the result that the reaction product is recoverable in solid particle-form as said PBP.
Inventors
- 👤 Harry L. Lander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:31
CPC Classifications
C; C08; C08L; C08L75/00; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/67; C08G18/69; C08K; C08K5/00; C08K5/0008; C08K5/0016; C08L23/00; C08L25/00; C08L25/02; C08L25/04; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L77/00; C08L91/00; C08L91/06; C08G2140/00; C08G2150/00; C08G2150/20; C08G2170/00; C08G2170/20
Claims Analysis
Total Claims: 87
Claim 1
Independent Claim
65 words
Solid thermoplastic, polymerizable or cross-linkable, multi-functional polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said blocked isocyanate groups being capable of undergoing polymerization or cross-linking.
Claim 2
Dependent Claim
65 words
Solid thermoplastic, polymerizable or cross-linkable, multi-functional polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said blocked isocyanate groups being capable of undergoing polymerization or cross-linking.
Claim 3
Dependent Claim
36 words
Solid particle-form, polymerizable or cross-linkable, multi-functional polymeric material in accordance with claim 1 wherein said polymeric material exhibits thermoplastic behavior at the temperature at which the blocked isocyanate groups making up said polymeric material become unblocked.
Claim 4
Dependent Claim
39 words
Solid particle-form, polymerizable or cross-linkable, multi-functional polymeric material in accordance with claim 1 wherein said polymeric material exhibits thermoplastic behavior at a temperature above the temperature at which the blocked isocyanate groups making up said polymeric material become unblocked.
Claim 5
Dependent Claim
39 words
Solid particle-form, polymerizable or cross-linkable, multi-functional polymeric material in accordance with claim 1 wherein said polymeric material exhibits thermoplastic behavior at a temperature below the temperature at which the blocked isocyanate groups making up said polymeric material become unblocked.
Claim 6
Dependent Claim
21 words
Solid particle-form, polymerizable or cross-linkable polymeric material in accordance with claim 1 wherein said polymeric material is a polyurethane polymeric material.
Claim 7
Dependent Claim
29 words
Solid particle-form polymeric material in accordance with claim 1 wherein said blocked isocyanate groups comprise a minor amount of the total isocyanate groups employed to produce said polymeric material.
Claim 8
Dependent Claim
32 words
Solid particle-form polymeric material in accordance with claim 1 wherein said blocked isocyanate groups comprise from about 1 to about 75% of the total isocyanate groups employed to produce said polymeric material.
Claim 9
Dependent Claim
24 words
Solid particle-form polymeric material in accordance with claim 1 having a particle size in the range from about 0.1 micron to about 2000 microns.
Claim 10
Dependent Claim
34 words
Solid particle-form, polymeric material in accordance with claim 1 wherein said blocked isocyanate groups thereof become unblocked and the resulting polymeric material becomes capable of undergoing polymerization at a temperature in the range 20°-250°C.
Claim 11
Dependent Claim
28 words
Solid particle-form, polymeric material in accordance with claim 9 wherein said polymeric material or said resulting polymeric material exhibits thermoplastic behavior at a temperature in the range 20°-150°C.
Claim 12
Dependent Claim
23 words
Solid particle-form, polymeric material in accordance with claim 1 wherein said blocked isocyanate groups thereof become unblocked at a temperature below about 150°C.
Claim 13
Dependent Claim
23 words
Solid particle-form polymeric material in accordacne with claim 1 wherein said blocked isocyanate groups thereof become unblocked at a temperature above about 150°C.
Claim 14
Dependent Claim
59 words
Solid particle-form, polymeric material in accordance with claim 1 wherein groups chemically reactive with isocyanate are provided by said polymeric material for reaction with the isocyanate groups of said blocked isocyanate groups of said polymeric material after said blocked isocyanate groups are unblocked by heating said polymeric material to an elevated temperature sufficient to unblock said blocked isocyanate groups.
Claim 15
Dependent Claim
28 words
Solid particle-form, polymeric material in accordance with claim 13 wherein said groups chemically reactive with said isocyanate groups are selected from --OH, --NH--, --NH 2 and --SH groups.
Claim 16
Dependent Claim
56 words
Solid particle-form, polymeric material in accordance with claim 1 wherein hydroxyl groups are provided by said polymeric material for reaction with the isocyanate groups of said blocked isocyanate groups of said polymeric material after said blocked isocyanate groups are unblocked by heating said polymeric material to an elevated temperature sufficient to unblock said blocked isocyanate groups.
Claim 17
Dependent Claim
19 words
Solid particle-form, polymeric material in accordance with claim 1 wherein said blocked isocyanate groups are blocked by a phenol.
Claim 18
Dependent Claim
20 words
Solid particle-form, thermoplastic, polymerizable or cross-linkable, multi-functional polymeric material in accordance with claim 16 wherein said poly-functional compound is ethanolamine.
Claim 19
Dependent Claim
19 words
Solid particle-form, polymeric material in accordance with claim 1 wherein said blocked isocyanate groups are blocked by a lactam.
Claim 20
Dependent Claim
16 words
Solid particle-form, polymeric material in accordance with claim 18 wherein said lactam is the compound ε-caprolactam.
Claim 21
Dependent Claim
28 words
Solid particle-form, polymerizable or cross-linkable, multi-functional polymeric material in accordance with claim 1 wherein said polymeric material is derived from a polyisocyanate and a polyfunctional compound reactive therewith.
Claim 22
Dependent Claim
40 words
Solid particle-form, polymerizable or cross-linkable, multi-functional polymeric material in accordance with claim 20 wherein said polyisocyanate is formed by the reaction of a polyisocyanate with a polyfunctional compound selected from the group consisting of polyhydroxy, hydroxyamino, polythiol and polyamino compounds.
Claim 23
Dependent Claim
33 words
Solid particle-form, polymerizable or cross-linkable, multi-functional polymeric material in accordance with claim 20 wherein said polyfunctional compound is a compound containing at least two functional groups selected from hydroxy, amino and thiol groups.
Claim 24
Dependent Claim
18 words
Solid particle-form, polymeric material in accordance with claim 1 wherein said polymeric material is derived from a polyisocyanate.
Claim 25
Dependent Claim
15 words
Solid particle-form, polymeric material in accordance with claim 23 wherein said polyisocyanate is a diisocyanate.
Claim 26
Dependent Claim
15 words
Solid particle-form, polymeric material in accordance with claim 23 wherein said polyisocyanate is a triisocyanate.
Claim 27
Dependent Claim
15 words
Solid particle-form, polymeric material in accordance with claim 23 wherein said polyisocyanate is tolylene diisocyanate.
Claim 28
Dependent Claim
15 words
Solid particle-form, polymeric material in accordance with claim 23 wherein said polyisocyanate is 4,4'-methylenediphenyl isocyanate.
Claim 29
Dependent Claim
15 words
Solid particle-form, polymeric material in accordance with claim 23 wherein said polyisocyanate is hexamethylene diisocyanate.
Claim 30
Dependent Claim
20 words
An article of manufacture comprising a polymerizate or thermoset reaction product of the solid particle-form, polymeric material of claim 1.
Claim 31
Dependent Claim
17 words
An article of manufacture in accordance with claim 29 wherein said article of manufacture is a tire.
Claim 32
Dependent Claim
23 words
An article of manufacture in accordance with claim 29 wherein said article of manufacture is in the form of a sheet or film.
Claim 33
Dependent Claim
21 words
An article of manufacture in accordance with claim 29 wherein said article of manufacture is in the form of a tube.
Claim 34
Dependent Claim
21 words
An article of manufacture in accordance with claim 29 wherein said article of manufacture is in the form of a strip.
Claim 35
Dependent Claim
21 words
An article of manufacture in accordance with claim 29 wherein said article of manufacture is in the form of a filament.
Claim 36
Dependent Claim
13 words
A palpable mass of solid particle-form polymeric material in accordance with claim 1.
Claim 37
Dependent Claim
39 words
A palpable mass of solid particle-form polymeric material in accordance with claim 1 wherein particles of said polymeric material making up said palpable mass have a particle size in the range from about 0.1 micron to about 1000 microns.
Claim 38
Dependent Claim
29 words
Solid particle-form, polymeric material in accordance with claim 1 wherein the isocyanate groups of said blocked isocyanate groups comprise about one-half of the functional groups of said polymeric material.
Claim 39
Dependent Claim
30 words
Solid particle-form, polymeric material in accordance with claim 1 wherein the isocyanate groups of said blocked isocyanate groups comprise a major amount of the functional groups of said polymeric material.
Claim 40
Dependent Claim
30 words
Solid particle-form, polymeric material in accordance with claim 1 wherein the isocyanate groups of said blocked isocyanate groups comprise a minor amount of the functional groups of said polymeric material.
Claim 41
Dependent Claim
21 words
Solid particle-form, polymeric material in accordance with claim 1 wherein said polymeric material has an average molecular weight above about 5000.
Claim 42
Dependent Claim
27 words
Solid particle-form, polymeric material in accordance with claim 1 wherein said polymeric material has an average molecular weight in the range from about 2000 to about 200,000.
Claim 43
Independent Claim
87 words
A method of preparing solid particle-form, polymeric material comprising reacting a partially blocked polyisocyanate with a chain extending reactant, introducing the resulting reaction admixture as a stream into a liquid bath of a non-solvent for said reaction admixture while vigorously agitating the bath so that as said reaction admixture stream is introduced thereinto said reaction admixture is dispersed as finely divided droplets within said bath, completing the reaction of said reaction admixture within said bath and recovering the resulting finely divided solid particle-form, polymeric material reaction product.
Claim 44
Independent Claim
87 words
A method of preparing solid particle-form, polymeric material comprising reacting a partially blocked polyisocyanate with a chain extending reactant, introducing the resulting reaction admixture as a stream into a liquid bath of a non-solvent for said reaction admixture while vigorously agitating the bath so that as said reaction admixture stream is introduced thereinto said reaction admixture is dispersed as finely divided droplets within said bath, completing the reaction of said reaction admixture within said bath and recovering the resulting finely divided solid particle-form, polymeric material reaction product.
Claim 45
Dependent Claim
16 words
A method in accordance with claim 42 wherein the liquid of said liquid bath comprises water.
Claim 46
Independent Claim
121 words
A method of preparing solid particle-form, polymeric material comprising reacting a partially blocked isocyanate with a chain extending reactant in the presence of a volatilizable liquid, permitting the reaction between said partially blocked isocyanate and said chain extending reactant to take place with increase in temperature of the reaction admixture, the reaction taking place under conditions such that the heat of reaction is sufficient to volatilize said solvent with resulting foaming or frothing of the reaction admixture but insufficient to increase the temperature of the reaction admixture above the temperature at which the blocked isocyanate groups of said partially blocked isocyanate are unblocked and comminuting the resulting reaction admixture upon completion of the reaction to produce said solid particle-form, polymeric material.
Claim 47
Independent Claim
121 words
A method of preparing solid particle-form, polymeric material comprising reacting a partially blocked isocyanate with a chain extending reactant in the presence of a volatilizable liquid, permitting the reaction between said partially blocked isocyanate and said chain extending reactant to take place with increase in temperature of the reaction admixture, the reaction taking place under conditions such that the heat of reaction is sufficient to volatilize said solvent with resulting foaming or frothing of the reaction admixture but insufficient to increase the temperature of the reaction admixture above the temperature at which the blocked isocyanate groups of said partially blocked isocyanate are unblocked and comminuting the resulting reaction admixture upon completion of the reaction to produce said solid particle-form, polymeric material.
Claim 48
Dependent Claim
29 words
A method in accordance with claim 44 wherein the reaction between said partially blocked isocyanate and said chain extending reactant is carried out while agitating the resulting reaction admixture.
Claim 49
Dependent Claim
36 words
A method in accordance with claim 44 wherein said resulting reaction admixture during the reaction between said partially blocked polyurethane prepolymer and said chain extending reactant therein is in the form of a film or layer.
Claim 50
Independent Claim
75 words
A method of preparing solid particle-form, polymeric material comprising forming a reaction admixture consisting essentially of a partially blocked polyisocyanate and a chain extending reactant, dispersing the resulting formed reaction admixture as droplets into a reaction zone, permitting the reaction between said partially blocked polyisocyanate and said chain extending reactant in said droplets to take place in droplet form within said reaction zone and recovering from the reaction zone resulting produced solid particle-form, polymeric material.
Claim 51
Independent Claim
75 words
A method of preparing solid particle-form, polymeric material comprising forming a reaction admixture consisting essentially of a partially blocked polyisocyanate and a chain extending reactant, dispersing the resulting formed reaction admixture as droplets into a reaction zone, permitting the reaction between said partially blocked polyisocyanate and said chain extending reactant in said droplets to take place in droplet form within said reaction zone and recovering from the reaction zone resulting produced solid particle-form, polymeric material.
Claim 52
Dependent Claim
40 words
A method in accordance with claim 47 wherein the droplets of said reaction admixture are formed by contact of dispersed streams, one stream consisting essentially of said partially blocked polyisocyanate and another stream consisting essentially of said chain extending reactant.
Claim 53
Dependent Claim
35 words
A method in accordance with claim 47 wherein said droplets move through said reaction zone in counter-current contact with an inert gas flowing therethrough before the resulting produced solid particle-form, polymeric material is recovered therefrom.
Claim 54
Dependent Claim
31 words
A method in accordance with claim 47 wherein said droplets are maintained in said reaction zone as a fluidized mass before the resulting produced solid particle-form, polymeric material is recovered therefrom.
Claim 55
Dependent Claim
35 words
A method in accordance with claim 47 wherein said droplets move through said reaction zone in concurrent contact with an inert gas flowing therethrough before the resulting produced solid particle-form, polymeric material is recovered therefrom.
Claim 56
Dependent Claim
32 words
A method in accordance with claim 47 wherein said droplets fall into and said solid particle-form, polymeric material is recovered from a liquid bath provided in the bottom of said reaction zone.
Claim 57
Dependent Claim
29 words
A method in accordance with claim 52 wherein said liquid bath is an aqueous liquid bath maintained at a temperature in the range from about 20° to about 80°C.
Claim 58
Independent Claim
58 words
A method of preparing solid particle-form, polymeric material which comprises reacting a partially blocked polyisocyanate with a chain extending reactant, carrying out the aforesaid reaction at a temperature below the temperature at which the blocked isocyanate groups are unblocked, recovering the resulting reaction admixture and comminuting the resulting recovered reaction admixture to produce said solid particle-form, polymeric material.
Claim 59
Independent Claim
58 words
A method of preparing solid particle-form, polymeric material which comprises reacting a partially blocked polyisocyanate with a chain extending reactant, carrying out the aforesaid reaction at a temperature below the temperature at which the blocked isocyanate groups are unblocked, recovering the resulting reaction admixture and comminuting the resulting recovered reaction admixture to produce said solid particle-form, polymeric material.
Claim 60
Dependent Claim
23 words
A method in accordance with claim 54 wherein the reaction is carried out such that the reaction temperature does not exceed about 150°C.
Claim 61
Dependent Claim
99 words
Solid particle-form, thermoplastic, polymerizable or cross-linkable, multi-functional, polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said blocked isocyanate groups being capable of undergoing polymerization or cross-linking, said polymeric material providing amino groups for reaction with blocked isocyanate groups after said isocyanate groups are unblocked by heating said polymeric material to an elevated temperature sufficient to unblock said isocyanate groups.
Claim 62
Dependent Claim
99 words
Solid particle-form, thermoplastic, polymerizable or cross-linkable, multi-functional, polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said blocked isocyanate groups being capable of undergoing polymerization or cross-linking, said polymeric material providing amino groups for reaction with blocked isocyanate groups after said isocyanate groups are unblocked by heating said polymeric material to an elevated temperature sufficient to unblock said isocyanate groups.
Claim 63
Dependent Claim
86 words
Solid particle-form, thermoplastic, polymerizable or cross-linkable, multi-functional, polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said blocked isocyanate groups being capable of undergoing polymerization of cross-linking and wherein said blocked isocyanate groups are blocked by more than one blocking group and which unblock at different temperatures.
Claim 64
Dependent Claim
86 words
Solid particle-form, thermoplastic, polymerizable or cross-linkable, multi-functional, polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said blocked isocyanate groups being capable of undergoing polymerization of cross-linking and wherein said blocked isocyanate groups are blocked by more than one blocking group and which unblock at different temperatures.
Claim 65
Dependent Claim
77 words
Solid particle-form thermoplastic, polymerizable or cross-linkable, multi-functional, polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said isocyanate groups being capable of undergoing polymerization or cross-linking and wherein said blocked isocyanate groups are blocked by a secondary amine.
Claim 66
Dependent Claim
77 words
Solid particle-form thermoplastic, polymerizable or cross-linkable, multi-functional, polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said isocyanate groups being capable of undergoing polymerization or cross-linking and wherein said blocked isocyanate groups are blocked by a secondary amine.
Claim 67
Dependent Claim
76 words
Solid particle-form, thermoplastic, polymerizable or cross-linkable, multi-functional polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said isocyanate groups being capable of undergoing polymerization or cross-linking and wherein said blocked isocyanate groups are blocked by an imide.
Claim 68
Dependent Claim
76 words
Solid particle-form, thermoplastic, polymerizable or cross-linkable, multi-functional polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said isocyanate groups being capable of undergoing polymerization or cross-linking and wherein said blocked isocyanate groups are blocked by an imide.
Claim 69
Dependent Claim
76 words
Solid particle-form, thermoplastic, polymerizable or cross-linkable, multi-functional polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said isocyanate groups being capable of undergoing polymerization or cross-linking and wherein said blocked isocyanate groups are blocked by ethyl malonate.
Claim 70
Dependent Claim
76 words
Solid particle-form, thermoplastic, polymerizable or cross-linkable, multi-functional polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said isocyanate groups being capable of undergoing polymerization or cross-linking and wherein said blocked isocyanate groups are blocked by ethyl malonate.
Claim 71
Dependent Claim
75 words
Solid particle-form, thermoplastic, polymerizable or cross-linkable, multi-functional polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said isocyanate groups being capable of undergoing polymerization or cross-linking and wherein said blocked isocyanate groups are blocked by acetylacetone.
Claim 72
Dependent Claim
75 words
Solid particle-form, thermoplastic, polymerizable or cross-linkable, multi-functional polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said isocyanate groups being capable of undergoing polymerization or cross-linking and wherein said blocked isocyanate groups are blocked by acetylacetone.
Claim 73
Dependent Claim
80 words
Solid particle-form, thermoplastic, polymerizable or cross-linkable, multi-functional, polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said blocked isocyanate groups being capable of undergoing polymerization or cross-linking wherein said polymeric material is derived from a polyisocyanate reacted with a hydroxy-terminated polyester.
Claim 74
Dependent Claim
80 words
Solid particle-form, thermoplastic, polymerizable or cross-linkable, multi-functional, polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said blocked isocyanate groups being capable of undergoing polymerization or cross-linking wherein said polymeric material is derived from a polyisocyanate reacted with a hydroxy-terminated polyester.
Claim 75
Dependent Claim
80 words
Solid particle-form, thermoplastic, polymerizable or cross-linkable, multi-functional polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said blocked isocyanate groups being capable of undergoing polymerization or cross-linking wherein said polymeric material is derived from a polyisocyanate reacted with a hydroxy-terminated polybutadiene.
Claim 76
Dependent Claim
80 words
Solid particle-form, thermoplastic, polymerizable or cross-linkable, multi-functional polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said blocked isocyanate groups being capable of undergoing polymerization or cross-linking wherein said polymeric material is derived from a polyisocyanate reacted with a hydroxy-terminated polybutadiene.
Claim 77
Dependent Claim
79 words
Solid particle-form, thermoplastic, polymerizable or cross-linkable, multi-functional, polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said blocked isocyanate groups being capable of undergoing polymerization or cross-linking wherein said polymeric material is derived from a polyisocyanate reacted with hydroxy-terminated polyether.
Claim 78
Dependent Claim
79 words
Solid particle-form, thermoplastic, polymerizable or cross-linkable, multi-functional, polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said blocked isocyanate groups being capable of undergoing polymerization or cross-linking wherein said polymeric material is derived from a polyisocyanate reacted with hydroxy-terminated polyether.
Claim 79
Dependent Claim
79 words
Solid particle-form, thermoplastic, polymerizable or cross-linkable, multi-functional polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said blocked isocyanate groups being capable of undergoing polymerization or cross-linking, said polymeric material being derived by reacting a polyisocyanate with a dihydroxy compound.
Claim 80
Dependent Claim
79 words
Solid particle-form, thermoplastic, polymerizable or cross-linkable, multi-functional polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said blocked isocyanate groups being capable of undergoing polymerization or cross-linking, said polymeric material being derived by reacting a polyisocyanate with a dihydroxy compound.
Claim 81
Dependent Claim
19 words
Solid particle-form, polymerizable or cross-linkable, multi-functional polymeric material in accordance with claim 65 wherein said dihydroxy compound is 1,4-butanediol.
Claim 82
Dependent Claim
20 words
Solid particle-form, polymerizable or cross-linkable, multi-functional polymeric material in accordance with claim 65 wherein said dihydroxy compound is ethylene glycol.
Claim 83
Dependent Claim
85 words
Solid particle-form thermoplastic, polymerizable or cross-linkable, multi-functional polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said blocked isocyanate groups being capable of undergoing polymerization or cross-linking and wherein said polymeric material is formed by the reaction of a polyisocyanate with a poly-functional compound reacted therewith.
Claim 84
Dependent Claim
85 words
Solid particle-form thermoplastic, polymerizable or cross-linkable, multi-functional polymeric material containing blocked isocyanate groups together with urea and/or urethane linkages and wherein the blocked isocyanate groups making up said polymeric material comprise only a portion of the total isocyanate groups employed to produce said polymeric material, said polymeric material upon increase in temperature sufficient to unblock said blocked isocyanate groups being capable of undergoing polymerization or cross-linking and wherein said polymeric material is formed by the reaction of a polyisocyanate with a poly-functional compound reacted therewith.
Claim 85
Dependent Claim
19 words
Solid particle-form, polymerizable or cross-linkable, multi-functional polymeric material in accordance with claim 68 wherein said polyfunctional compound is ethylenediamine.
Claim 86
Dependent Claim
20 words
Solid particle-form, polymerizable or cross-linkable, multi-functional polymeric material in accordance with claim 68 wherein said polyfunctional compound is polyvinyl alcohol.
Claim 87
Dependent Claim
22 words
Solid particle-form, polymerizable or cross-linkable, multi-functional polymeric material in accordance with claim 68 wherein said polyfunctional compound is a dihydroxy substituted cyclohexane.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |