Patent US4426510A successfully refreshed from Google Patents.
US4426510A
Expired / Lapsed
US
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Polyurethane preparation using organo-zinc catalyst and time-lapse modifier
Assignee: Rohm and Haas Co
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Filing: 1982-08-05
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Granted: 1984-01-17
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Expires: 2002-08-05
Abstract
Abstract Coating or adhesive composition having extended pot life and short cure time comprising an organic polyol, an organic polyisocyanate, an organo-zinc cure rate catalyst, and a compound selected from (a) beta-dicarbonyl compounds, (b) alpha-hydroxy ketones, (c) fused aromatic beta-hydroxy ketones, and (d) beta-hydroxy nitrogen-heterocyclic fused aromatics. Also disclosed are methods of preparing such coating or adhesive compositions, cured coatings and adhesives, and articles containing said coating or adhesive.
Inventors
- 👤 Theodore A. DelDonno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:48
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/161; C08G18/089; C08G18/22; C08G18/222; Y; Y10; Y10S; Y10S528/00; Y10S528/905
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
51 words
Coating or adhesive composition having extended pot life and short cure time comprising an organic polyol, an organic polyisocyanate, an organo-zinc cure rate catalyst, and a compound effective to extend the pot-life selected from (a) beta-dicarbonyl compounds, (b) alpha-hydroxy ketones, (c) fused aromatic beta-hydroxy ketones, and (d) beta-hydroxy nitrogen-heterocyclic fused aromatics.
Claim 2
Dependent Claim
51 words
Coating or adhesive composition having extended pot life and short cure time comprising an organic polyol, an organic polyisocyanate, an organo-zinc cure rate catalyst, and a compound effective to extend the pot-life selected from (a) beta-dicarbonyl compounds, (b) alpha-hydroxy ketones, (c) fused aromatic beta-hydroxy ketones, and (d) beta-hydroxy nitrogen-heterocyclic fused aromatics.
Claim 3
Dependent Claim
16 words
Composition in accordance with claim 1 wherein the organic polyol is a hydroxyl functional acrylic polymer.
Claim 4
Dependent Claim
24 words
Composition in accordance with claim 2 wherein the hydroxyl functional acrylic polymer has a molecular weight, M n , of about 200 to 10,000.
Claim 5
Dependent Claim
15 words
Composition in accordance with claim 3 wherein said molecular weight is about 500 to 2500.
Claim 6
Dependent Claim
21 words
Composition in accordance with claim 2 wherein said hydroxyl functional acrylic polymer has an acid number of about 0.01 to 80.
Claim 7
Dependent Claim
15 words
Composition in accordance with claim 5 wherein the acid number is about 0.5 to 30.
Claim 8
Dependent Claim
15 words
Composition in accordance with claim 6 wherein the acid number is about 1.5 to 20.
Claim 9
Dependent Claim
30 words
Composition in accordance with claim 1 wherein the organo zinc compound is selected from zinc octoate, zinc naphthenate, zinc tallate, zinc (C 9 -C 14 ) carboxylate, and zinc acetate.
Claim 10
Dependent Claim
12 words
Composition in accordance with claim 1 wherein said compound is a beta-diketone.
Claim 11
Dependent Claim
22 words
Composition in accordance with claim 9 wherein said beta-diketone is selected from the group consisting of 2,4-pentanedione, 1,1,1-trifluoro-2,4-pentanedione, 2,4-hexanedione, 5-methyl-2,4-hexanedione, and dibenzoylmethane.
Claim 12
Dependent Claim
35 words
Composition in accordance with claim 2 wherein said hydroxyl functional acrylic polymer is a copolymer of hydroxyalkyl acrylate or hydroxyalkyl methacrylate and a blend of lower alkyl (C 1 -C 8 ) acrylate or methacrylates.
Claim 13
Dependent Claim
20 words
Composition in accordance with claim 11 wherein said copolymer is polymerized from a mixture of hydroxyethyl methacrylate and butyl methacrylate.
Claim 14
Dependent Claim
35 words
Composition in accordance with claim 1 wherein said polyisocyanate is selected from the group consisting of biurets, isocyanurates, and isocyanate terminated polyol/isocyanate prepolymers from 2,4-toluene diisocyanate, 1-6 hexamethylene diisocyanate, 3-isocyanotomethyl-3,5,5-trimethylcyclohexyl isocyanate, and 4,4'-methylene bis(cyclohexyl isocyanate).
Claim 15
Dependent Claim
21 words
Composition in accordance with claim 1 wherein the hydroxyl functional acrylic polymer has a hydroxyl number of about 50 to 350.
Claim 16
Dependent Claim
15 words
Composition in accordance with claim 1 wherein the hydroxy member is about 85 to 250.
Claim 17
Dependent Claim
21 words
Composition in accordance with claim 1 wherein the polyol is a blend of said hydroxyl acrylic polyol with simple aliphatic polyols.
Claim 18
Dependent Claim
62 words
Method of preparing a coating or adhesive composition having extended pot life and short cure time comprising mixing an organic polyol, an organic polyisocyanate, an effective amount of organo-zinc cure rate catalyst, and an amount of a compound effective to extend the pot-life selected from (a) beta-dicarbonyl compounds, (b) alpha-hydroxy ketones, (c) fused aromatic beta-hydroxy ketones, and (d) beta-hydroxy nitrogen-heterocyclic fused aromatics.
Claim 19
Dependent Claim
62 words
Method of preparing a coating or adhesive composition having extended pot life and short cure time comprising mixing an organic polyol, an organic polyisocyanate, an effective amount of organo-zinc cure rate catalyst, and an amount of a compound effective to extend the pot-life selected from (a) beta-dicarbonyl compounds, (b) alpha-hydroxy ketones, (c) fused aromatic beta-hydroxy ketones, and (d) beta-hydroxy nitrogen-heterocyclic fused aromatics.
Claim 20
Dependent Claim
80 words
Method in accordance with claim 17 wherein said organic polyol is a hydroxyl functional acrylic polymer having a molecular weight, M n , of about 200 to 10,000, an acid number of 0.01 to 80, the equivalent ratio of said polyisocyanate to said polyol is about 0.5 to 1.5, the mole ratio of said catalyst to said polyisocyanate is about 0.0001 to 0.1, and said compound is present in a molar ratio to said catalyst of at least about 0.1.
Claim 21
Dependent Claim
8 words
Article coated with the coating of claim 1.
Claim 22
Dependent Claim
8 words
Article treated with the adhesive of claim 1.
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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) | 1987-01-16 | 1987-07-18 | 1988-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-16 | 1991-07-18 | 1992-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-16 | 1995-07-18 | 1996-01-17 | $7700.00 | Window Closed / Lapsed |