US4748201A
Expired / Lapsed
US
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Sprayable polyurethane composition and method of preparation
Assignee: LINAMAR MACHINE Ltd
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Filing: 1986-03-28
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Granted: 1988-05-31
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Expires: 2006-03-28
Abstract
Abstract An aromatic, isocyanate-base, polyurethane polymer and a process for preparing the polymer. The process comprises reacting, such as by spraying onto a substrate or an open mold, a caprolactone polyol with a methylene dipara phenylene isocyanate in the presence of a catalytic amount of a metallo catalyst, and a fast-curing and cross-linking amount of a curing agent comprising a polyalkanol amine, particularly a triethanol amine, to provide a fast-reaction aliphatic poilyurethane polymer. The reaction of difunctional caprolactone polyols with low functionality MDI in the presence of a tin catalyst and triethanol amine provides for flexible and rigid polymer films of substantially no porosity.
Inventors
- 👤 Stuart B. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:20
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/161; C08G18/163; C08G18/088; C08G18/0885; C08G18/0895; C08G18/18; C08G18/1825; C08G18/28; C08G18/40; C08G18/42; C08G18/4266; C08G18/4269; C08G18/4277; C08G18/65; C08G18/66; C08G18/6633; C08G18/6637; C08G18/6648; C08G18/6655; C08G18/70; C08G18/72; C08G18/74; C08G18/76; C08G18/7657; C08G18/7664; C09; C09D; C09D175/00; C09D175/04; C08G2120/00; C08G2150/00; C08G2150/50
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
84 words
In a process for preparing a fast-reacting polyurethane which process consists essentially of reacting about 50 to 200 parts by weight of MDI with a caprolactone polyol in the presence of a catalytic amount of a metal catalyst and an amine curing agent, to provide a reaction composition to produce a fast-reacting polyurethane polymer, the improvement which comprises employing as the curing agent a polyalkanol amine curing agent in a curing amount sufficient to provide a reaction time of about 15 seconds or less.
Claim 2
Dependent Claim
84 words
In a process for preparing a fast-reacting polyurethane which process consists essentially of reacting about 50 to 200 parts by weight of MDI with a caprolactone polyol in the presence of a catalytic amount of a metal catalyst and an amine curing agent, to provide a reaction composition to produce a fast-reacting polyurethane polymer, the improvement which comprises employing as the curing agent a polyalkanol amine curing agent in a curing amount sufficient to provide a reaction time of about 15 seconds or less.
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein the MDI comprises an MDI having a functionality of about 2.5 or less.
Claim 4
Dependent Claim
19 words
The process of claim 1 wherein the caprolactone polyol has a hdyroxyl number ranging from about 180 to 600.
Claim 5
Dependent Claim
14 words
The process of claim 1 wherein the caprolactone polyol is a difunctional liquid polyol.
Claim 6
Dependent Claim
25 words
The process of claim 1 wherein the metallic catalyst comprises an organo metallic salt selected from the group consisting of lead, tin and combinations thereof.
Claim 7
Dependent Claim
18 words
The process of claim 1 wherein the catalyst comprises a dialkyl di fatty acid tetravalent 7 in salt.
Claim 8
Dependent Claim
20 words
The process of claim 1 wherein the polyalkanol amine comprises a triethanol amine, a diethanol amine or a mixture thereof.
Claim 9
Dependent Claim
26 words
The process of claim 1 wherein the triethanol amine is present in a curing amount, to provide for a reaction time of less than 5 seconds.
Claim 10
Dependent Claim
21 words
The process of claim 1 which includes carrying out the reaction in the presence of a color-producing amount of a pigment.
Claim 11
Dependent Claim
27 words
The process of claim 11 wherein the pigment comprises from about 1 to 30 parts by weight of titanium dioxide per 100 parts of the reaction mixture.
Claim 12
Dependent Claim
22 words
The process of claim 1 which includes carrying out the reaction in the presence of a flame-retardant amount of a flame-retardant agent.
Claim 13
Dependent Claim
24 words
The process of claim 11 which includes carrying out the reaction in the presence of a hologenated phosphate or a hologenated phosphate flame-retardant agent.
Claim 14
Dependent Claim
43 words
The process of claim 1 which includes preparing an A-side composition containing the MDI and a B-side composition containing the caprolactone polyol, the catalyst and the curing agent, and spraying the A- and B-side compositions into a mold or onto a substrate surface.
Claim 15
Dependent Claim
20 words
The process of claim 13 which includes spraying the A- and B-side compositions as a coating layer onto a substrate.
Claim 16
Dependent Claim
33 words
The process of claim 1 wherein the caprolactone polyol comprises a liquid difunctional polyol having a hydroxyl number of about 180 to 220, and wherein the amine curing agent comprises a triethanol amine.
Claim 17
Dependent Claim
22 words
The process of claim 1 which includes carrying out the reaction in the presence of a moisture-scavenger amount of a moisture-scavenger agent.
Claim 18
Dependent Claim
12 words
The nonporous aliphatic urethane polymer prepared by the process of claim 1.
Claim 19
Dependent Claim
12 words
The nonporous sprayed urethane-coated substrate prepared by the process of claim 13.
Claim 20
Dependent Claim
11 words
The nonporous polyurethane polymer prepared by the process of claim 15.
Claim 21
Dependent Claim
102 words
A process for preparing a fast-curing, nonporous polyurethane polymer, which process consists essentially of preparing A- and B-side compositions and spraying the A- and B-side compositions together onto a substrate, wherein the A-side composition comprises 50 to 200 parts of an MDI having a functionality of about 2.5 or less, and the B-side composition comprises a catalytic amount of a tin or lead organo-metal catalyst, 100 parts by weight of a liquid difunctional caprolactone polyol, a curing amount of a polyethanol amine curing agent and a moisture-scavenger amount of a moisture-scavenger agent, to provide a reaction in about 10 seconds or less.
Claim 22
Dependent Claim
102 words
A process for preparing a fast-curing, nonporous polyurethane polymer, which process consists essentially of preparing A- and B-side compositions and spraying the A- and B-side compositions together onto a substrate, wherein the A-side composition comprises 50 to 200 parts of an MDI having a functionality of about 2.5 or less, and the B-side composition comprises a catalytic amount of a tin or lead organo-metal catalyst, 100 parts by weight of a liquid difunctional caprolactone polyol, a curing amount of a polyethanol amine curing agent and a moisture-scavenger amount of a moisture-scavenger agent, to provide a reaction in about 10 seconds or less.
Claim 23
Dependent Claim
11 words
The nonporous polyurethane polymer prepared by the process of claim 20.
Claim 24
Dependent Claim
16 words
The process of claim 1 wherein the polyalkanol amine comprises a substantially pure 99% triethanol amine.
Claim 25
Dependent Claim
21 words
The process of claim 1 wherein the polyalkanol amine comprises from about 0.5% to 15% by weight of the reaction composition.
Claim 26
Dependent Claim
23 words
A urethane polymer sheet material prepared by the process of claim 20, and wherein such sheet material is a substantially nonporous sheet product.
References Cited (Backward Citations)
US4080318A
Cited
US4251427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-31 | 1991-11-30 | 1992-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-31 | 1995-11-30 | 1996-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-31 | 1999-11-30 | 2000-05-31 | $7700.00 | Window Closed / Lapsed |