Patent US20070118165A1 successfully refreshed from Google Patents.
US3917648A
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Galvanic coating compositions comprising polyol silcates and zinc dust
Assignee: G D Mcleod & Sons Inc
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Filing: 1972-08-28
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Granted: 1975-11-04
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Expires: 1992-08-28
Abstract
Abstract Galvanically-protective coating compositions are prepared comprising polyol silicates and zinc dust. The compositions provide long-life protection for steel against rusting in moist and salty atmospheres. The zinc and silicate components may be compounded in one package or as two packages to be mixed prior to application as a film. Compositions comprising zinc and the polyol silicates with solvents, and with or without fillers or organic polymeric materials are especially useful as coatings. The range of polyol to organic silicate employed in making the polyol silicates is about 0.05 to 1.8 moles of reactive OH grouping supplied by the polyol per mole of ester-exchangeable group in the silicates the larger ratios being especially useful for the monomer type silicates and decreasing as the CONTENT INCREASES.
Inventors
- 👤 Gordon Donald Mcleod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:04
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/14; C08; C08G; C08G77/00; C08G77/48; C08K; C08K3/00; C08K3/02; C08K3/08; C09D5/00; C09D5/08; C09D5/10; C09D5/106
Claims Analysis
Total Claims: 46
Claim 1
Independent Claim
120 words
AN ESSENTIALLY ANHYDROUS POLYOL SILICATE COMPOSITION CONSISTING ESSENTIALLY OF SOLVENT-SOLUBLE POLYOL SILIVATE ESTEREXCHANGE REACTION PRODUCT OF (1) SILICATE CONSISTING ESSENTIALLY OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF ORTHO SILICATES HAVING ESTEREXCHANGE GROUPS OF 1 TO 6 CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF ALKYL HYDROXYALKYL ALKOXYALKYL AND HYDROXYALKYL SILOXANES THEREOF AND THEIR MIXTURES AND (2) ALIPHATIC POLYOL WHICH IS ESTEREXCHANGEABLE WITH (1) SAID REACTION PRODUCT BEING MADE BY REACTING (1) NA D(2) IN AMOUNTS PROVIDING A RATIO OF HYDROXYL GROUPS OF (2) OF ABOUT 0.15 TO 1.8 MOLES PER MOLE OF ESTEREXCHANGEABLE GROUP OF (1) AND FINELY DIVIDED METALLIC ZINC IN AN AMOUNT SUFFICIENT TO PROVIDE GALVANIC PROTECTION WHEN THE COMPOSITION IS CURED ON A FERROUS SUBSTRATE.
Claim 2
Dependent Claim
120 words
AN ESSENTIALLY ANHYDROUS POLYOL SILICATE COMPOSITION CONSISTING ESSENTIALLY OF SOLVENT-SOLUBLE POLYOL SILIVATE ESTEREXCHANGE REACTION PRODUCT OF (1) SILICATE CONSISTING ESSENTIALLY OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF ORTHO SILICATES HAVING ESTEREXCHANGE GROUPS OF 1 TO 6 CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF ALKYL HYDROXYALKYL ALKOXYALKYL AND HYDROXYALKYL SILOXANES THEREOF AND THEIR MIXTURES AND (2) ALIPHATIC POLYOL WHICH IS ESTEREXCHANGEABLE WITH (1) SAID REACTION PRODUCT BEING MADE BY REACTING (1) NA D(2) IN AMOUNTS PROVIDING A RATIO OF HYDROXYL GROUPS OF (2) OF ABOUT 0.15 TO 1.8 MOLES PER MOLE OF ESTEREXCHANGEABLE GROUP OF (1) AND FINELY DIVIDED METALLIC ZINC IN AN AMOUNT SUFFICIENT TO PROVIDE GALVANIC PROTECTION WHEN THE COMPOSITION IS CURED ON A FERROUS SUBSTRATE.
Claim 3
Dependent Claim
22 words
The composition of claim 1 in which the reaction product is free of a portion of alcohol formed by the ester-exchange reaction.
Claim 4
Dependent Claim
26 words
A composition of claim 1 wherein the mole ratio of hydroxyl groups of (2) is about 0.35 to 0.9 per mole of ester-exchangeable groups of (1).
Claim 5
Dependent Claim
15 words
The composition of claim 1 in which ester-exchangeable groups of (1) are alkyl or alkoxyalkyl.
Claim 6
Dependent Claim
17 words
A composition of claim 1 in which said esterexchange reaction product is in a non-gelling organic solvent.
Claim 7
Dependent Claim
27 words
A composition of claim 5 in which the solvent is selected from the group consisting of methyl ketones other than acetone, alkoxyalkanols, alcohols, hydrocarbons, and mixtures thereof.
Claim 8
Dependent Claim
27 words
A composition of claim 6 in which the mole ratio of hydroxyl groups of (2) is about 0.35 to 0.9 per mole of ester-exchangeable group of (1).
Claim 9
Dependent Claim
34 words
A composition of claim 6 in which the finely divided zinc is in an amount of about 50 to 98% based on the total weight of the polyol silicate reaction product and metallic zinc.
Claim 10
Dependent Claim
17 words
A composition of claim 1 in which said esterexchange reaction product has therein ester-exchangeable alkanol or alkoxyalkanol.
Claim 11
Dependent Claim
25 words
A composition of claim 1 in which (2) is a glycol and the ester-exchange reaction is conducted at a temperature of about 50* to 160*C.
Claim 12
Dependent Claim
29 words
A composition of claim 10 in which the esterexchangeable groups of (1) have up to 4 carbon atoms and are selected from the group consisting of alkyl and alkoxyalkyl.
Claim 13
Dependent Claim
17 words
A composition of claim 11 in which said ester-exchange reaction product has therein ester-exchangeable alkanol or alkoxyalkanol.
Claim 14
Dependent Claim
15 words
A composition of claim 1 which contains a minor amount of solvent-soluble polyvinyl alkylal polymer.
Claim 15
Dependent Claim
14 words
A composition of claim 13 in which the polyvinyl alkylal polymer is polyvinyl butyral.
Claim 16
Dependent Claim
64 words
The composition of claim 14 in which (1) has up to about 10 silicon atoms per molecule and its ester-exchangeable groups are alkyl or alkoxyalkyl of up to 4 carbon atoms, (2) is ethylene glycol, propylene glycol or glycerol, the ratio of hydroxyl groups of (2) is about 0.35 to 0.9 moles per mole of ester-exchangeable group of (1), and the reaction is acidcatalyzed.
Claim 17
Dependent Claim
32 words
The composition of claim 15 in which the ester-exchange reaction product is in a solvent selected from the group consisting of methyl ketones other than acetone, alkoxyalkanols, alcohols, hydrocarbons, and mixtures thereof.
Claim 18
Dependent Claim
23 words
The composition of claim 16 in which is included zinc oxide in an amount sufficient to improve the curing properties of the composition.
Claim 19
Dependent Claim
19 words
The composition of claim 1 wherein said reaction product is made at a temperature of about 50* to 160*C.
Claim 20
Dependent Claim
25 words
A composition of claim 1 in which the major portion of (2) is selected from the group consisting of ethylene glycol, propylene glycol and glycerol.
Claim 21
Dependent Claim
12 words
A composition of claim 9 in which the ester-exchange reaction is acid-catalyzed.
Claim 22
Dependent Claim
20 words
A composition of claim 20 in which the ester-exchange reaction is conducted at a temperature of about 50* to 160*C.
Claim 23
Dependent Claim
144 words
A substantially anhydrous, polyol silicate composition consisting essentially of solvent-soluble polyol silicate ester-exchange reaction product of (1) silicate having up to about 10 silicon atoms per molecule consisting essentially of a member selected from the group consisting of tetra ortho silicates having ester-exchangeable groups which are alkyl or alkoxyalkyl having 1 to 4 carbon atoms, siloxanes thereof and their mixtures, and (2) polyol ester-exchangeable with (1) consisting essentially of a member selected from the group consisting of ethylene glycol, propylene glycol, and glycerol, said reaction product being made by reacting (1) and (2) at a temperature of about 80* to 160*C. in amounts providing a ratio of hydroxyl groups of (2) of about 0.15 to 1.8 moles per mole of ester-exchangeable group of (1); and zinc dust in an amount sufficient to provide galvanic protection when the composition is cured on a ferrous substrate.
Claim 24
Dependent Claim
144 words
A substantially anhydrous, polyol silicate composition consisting essentially of solvent-soluble polyol silicate ester-exchange reaction product of (1) silicate having up to about 10 silicon atoms per molecule consisting essentially of a member selected from the group consisting of tetra ortho silicates having ester-exchangeable groups which are alkyl or alkoxyalkyl having 1 to 4 carbon atoms, siloxanes thereof and their mixtures, and (2) polyol ester-exchangeable with (1) consisting essentially of a member selected from the group consisting of ethylene glycol, propylene glycol, and glycerol, said reaction product being made by reacting (1) and (2) at a temperature of about 80* to 160*C. in amounts providing a ratio of hydroxyl groups of (2) of about 0.15 to 1.8 moles per mole of ester-exchangeable group of (1); and zinc dust in an amount sufficient to provide galvanic protection when the composition is cured on a ferrous substrate.
Claim 25
Dependent Claim
16 words
A composition of claim 22 wherein (2) is ethylene glycol and the ester-exchange reaction is acid-catalyzed.
Claim 26
Dependent Claim
14 words
A composition of claim 23 wherein ester-exchangeable groups of (1) are ethyl or ethoxyethyl.
Claim 27
Dependent Claim
25 words
A composition of claim 24 wherein the ratio of hydroxyl groups of (2) is about 0.35 to 0.9 per mole of ester-exchangeable groups of (1).
Claim 28
Dependent Claim
16 words
The composition of claim 24 wherein said ester-exchange reaction product has therein ester-exchangeable alkanol or alkoxyalkanol.
Claim 29
Dependent Claim
17 words
A composition of claim 22 in which said ester-exchange reaction product is in a non-gelling organic solvent.
Claim 30
Dependent Claim
27 words
A composition of claim 27 in which the solvent is selected from the group consisting of methyl ketones other than acetone, alkoxyalkanols, alcohols, hydrocarbons, and mixtures thereof.
Claim 31
Dependent Claim
26 words
A composition of claim 28 wherein (2) is ethylene glycol and the ester-exchangeable groups of (1) are ethyl or ethoxyethyl and the ester-exchange reaction is acid-catalyzed.
Claim 32
Dependent Claim
27 words
A liquid composition of claim 29 wherein the mole ratio of hydroxyl groups of (2) is about 0.35 to 0.9 per mole of ester-exchangeable groups of (1).
Claim 33
Dependent Claim
33 words
A composition of claim 30 wherein the finely divided zinc is in an amount of about 50 to 98% based on the total weight of the polyol silicate reaction product and metallic zinc.
Claim 34
Dependent Claim
21 words
A composition of claim 19 having filler selected from the group consisting of finely divided silica, metal oxides and metal silicates.
Claim 35
Dependent Claim
30 words
A composition of claim 32 in which the filler is one or both of talc and zinc oxide in an amount sufficient to improve the curing properties of the composition.
Claim 36
Dependent Claim
14 words
A composition of claim 28 which contains an acidic curing catalyst for the composition.
Claim 37
Dependent Claim
27 words
A composition of claim 34 which contains one or both of talc and zinc oxide in an amount sufficient to improve the curing properties of the composition.
Claim 38
Dependent Claim
15 words
A composition of claim 35 containing zinc chloride or zinc acetate as a curing catalyst.
Claim 39
Dependent Claim
35 words
A liquid composition of claim 36 in which the polyol silicate reaction product is of ethylene glycol and tetraethyl silicate, a siloxane thereof having up to about 10 silicon atoms per molecule, or mixtures thereof.
Claim 40
Dependent Claim
92 words
A solvent-soluble polyol silicate composition of claim 1 in which the reaction product consists essentially of ester-exchange reaction product of (1) (RO)4 Si in which R has up to about 6 carbon atoms and is selected from the group consisting of alkyl And alkoxyalkyl, and (2) (HOMO)4 Si in which M is an aliphatic diol minus two hydroxyl groups; said reaction product being made by reacting (1) and (2) in amounts providing a ratio of ester-exchangeable groups of (1) of about 0.2 to 11 moles per mole of hydroxyl group of (2).
Claim 41
Dependent Claim
10 words
The composition of claim 38 in which M is -CH2CH2-.
Claim 42
Dependent Claim
19 words
The composition of claim 39 in which the reaction is acid-catalyzed at a temperature of about 80* to 160*C.
Claim 43
Dependent Claim
27 words
The composition of claim 40 in which the ratio of ester-exchangeable groups of (1) is about 0.3 to 5 moles per mole of hydroxyl group of (2).
Claim 44
Dependent Claim
27 words
The composition of claim 41 in which the solvent is selected from the group consisting of methyl ketones other than acetone, alkoxyalkanols, alcohols, hydrocarbons, and mixtures thereof.
Claim 45
Dependent Claim
12 words
The composition of claim 15 in which is included naturally-occurring basic filler.
Claim 46
Dependent Claim
12 words
The composition of claim 1 in which is included naturally-occurring basic filler.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |