Patent US4588787A successfully refreshed from Google Patents.
US4588787A
Expired / Lapsed
US
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Flexible two component urethane coating compositions
Assignee: Safety Transport International Development AB
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Filing: 1983-10-13
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Granted: 1986-05-13
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Expires: 2003-10-13
Abstract
Abstract This invention relates to flexible coating compositions which have excellent adherence to metal or plastic and possess superior weathering properties. More particularly, the invention relates to coating compositions which comprises hydroxy-containing urethane modified polyesters. The modified polyesters are made from urethane modified diols reacted with polyol and diacid compounds, polyisocyanate crosslinking agent and, optionally, a high molecular weight linear polyurethane.
Inventors
- 👤 Panagiotis I. Kordomenos
- 👤 Kenneth R. Kurple
- 👤 Delores J. Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:52
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/12; C08G18/83; C09; C09D; C09D175/00; C09D175/04; C09D175/06
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
157 words
A flexible two component urethane coating composition which is characterized in that it comprises: (A) hydroxy-containing urethane modified polyester (i) having a number average molecular weight (M n ) of between about 1000 and about 10,000, (ii) having a hydroxyl number of between about 30 and about 200, and (iii) containing between about 1 and about 10 urethane groups per molecule, and being made from reactants comprising: (1) urethane modified diol made by reacting: (a) diol, and (b) diisocyanate, wherein said diol and said diisocyanate are reacted in a molar ratio of from about 4:1 to about 4:3; (2) polyol comprising at least about 5 weight percent triol; and (3) acid component selected from dicarboxylic acids and anhydrides thereof; (B) polyisocyanate crosslinking agent; and (C) 0-60 weight percent, based on the total weight of (A) and (B) of said composition, of a linear polyurethane having a number average molecular weight of between about 15,000 and about 40,000.
Claim 2
Dependent Claim
157 words
A flexible two component urethane coating composition which is characterized in that it comprises: (A) hydroxy-containing urethane modified polyester (i) having a number average molecular weight (M n ) of between about 1000 and about 10,000, (ii) having a hydroxyl number of between about 30 and about 200, and (iii) containing between about 1 and about 10 urethane groups per molecule, and being made from reactants comprising: (1) urethane modified diol made by reacting: (a) diol, and (b) diisocyanate, wherein said diol and said diisocyanate are reacted in a molar ratio of from about 4:1 to about 4:3; (2) polyol comprising at least about 5 weight percent triol; and (3) acid component selected from dicarboxylic acids and anhydrides thereof; (B) polyisocyanate crosslinking agent; and (C) 0-60 weight percent, based on the total weight of (A) and (B) of said composition, of a linear polyurethane having a number average molecular weight of between about 15,000 and about 40,000.
Claim 3
Dependent Claim
27 words
A flexible coating composition according to claim 1, wherein said hydroxy-containing urethane modified polyester has a number average molecular weight of between about 2000 and about 4000.
Claim 4
Dependent Claim
25 words
A flexible coating composition according to claim 1, wherein said hydroxy-containing urethane modified polyester has a hydroxyl number of between about 50 and about 120.
Claim 5
Dependent Claim
33 words
A flexible coating composition according to claim 1, wherein said urethane modified diol is made by reacting said diol and said diisocyanate in a molar ratio of from about 2:0.8 to about 2:1.2.
Claim 6
Dependent Claim
14 words
A flexible coating composition according to claim 1, wherein said polyol further comprises diol.
Claim 7
Dependent Claim
30 words
A flexible coating composition according to claim 5, wherein said polyol comprises about 10-80 weight percent triol and about 90-20 weight percent diol based on the weight of said polyol.
Claim 8
Dependent Claim
19 words
A flexible coating composition according to claim 5, wherein said polyol comprises diol which is an aliphatic, linear diol.
Claim 9
Dependent Claim
21 words
A flexible coating composition according to claim 1, wherein said dicarboxylic acid comprise C 6 -C 12 aliphatic, linear dicarboxylic acids.
Claim 10
Dependent Claim
35 words
A coating composition according to claim 1, wherein said composition comprises between about 10 and about 60 weight percent of said linear polyurethane based on the total weight of (A) and (B) of said composition.
Claim 11
Dependent Claim
42 words
A coating composition according to claim 1, wherein said polyisocyanate crosslinking agent is included in said composition in an amount of from about 5 to about 60 weight percent based on the weight of said hydroxy-containing urethane modified polyester in said composition.
Claim 12
Dependent Claim
15 words
A coating composition according to claim 1, wherein said polyisocyanate crosslinking agent is a diisocyanate.
Claim 13
Dependent Claim
20 words
A coating composition according to claim 1, wherein said polyisocyanate crosslinking agent has 3 or more reactive isocyanates per molecule.
Claim 14
Dependent Claim
20 words
A coating composition according to claim 12, wherein said polyisocyanate crosslinking agent is a trimerized product of an aliphatic diisocyanate.
Claim 15
Dependent Claim
21 words
A coating composition according to claim 13, wherein said polyisocyanate crosslinking agent is a trimerized reaction product of 1,6 hexamethylene diisocyanate.
Claim 16
Dependent Claim
19 words
A coating composition according to claim 12, wherein said polyisocyanate crosslinking agent is a polyisocyanate having a biuret structure.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1989-05-12 | 1989-11-11 | 1990-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-12 | 1993-11-11 | 1994-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-12 | 1997-11-11 | 1998-05-13 | $7700.00 | Window Closed / Lapsed |