Patent US4632964A successfully refreshed from Google Patents.
US4632964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible finishes from branched aliphatic polyester urethanes and a melamine crosslinker
Assignee: EIDP Inc
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Filing: 1985-03-28
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Granted: 1986-12-30
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Expires: 2005-03-28
Abstract
Abstract A coating composition that forms a flexible finish and is used primarily as a clear finish over a colored or pigmented finish that are applied to flexible substrates of automobile and truck bodies; the composition contains as the film forming binder (1) a branched aliphatic polyester urethane which is the reaction product of a polyisocyanate and a branched aliphatic polyester and (2) preferably a methylated and butylated melamine formaldehyde crosslinking agent.
Inventors
- 👤 Lili W. Altschuler
- 👤 John A. Simms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:29
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4236; C08G18/4238; C08G18/4241; C09; C09D; C09D175/00; C09D175/04; C09D175/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
152 words
A coating composition that forms a clear flexible finish comprising about 50-80% by weight of film forming binder and about 20-50% by weight of an organic solvent for the binder; wherein the binder consists essentially of about (1) 50-70% by weight, based on the weight of the binder, of an ungelled branched polyester urethane having a hydroxyl number of about 10-200 and a weight average molecular weight of about 6,000-30,000; wherein the polyester urethane is the reaction product of a hydroxyl terminated branched polyester and a polyisocyanate; wherein the polyester is the esterification product of an aliphatic glycol, a polyhydric alcohol having at least three hydroxyl groups, and aliphatic dicarboxylic acid and (2) 30-50% by weight, based on the weight of the binder, of a fully methylated and butylated melamine formaldehyde crosslinking agent containing about 50% methylated groups and about 50% butylated groups and having a degree of polymerization of about 1-3.
Claim 2
Dependent Claim
152 words
A coating composition that forms a clear flexible finish comprising about 50-80% by weight of film forming binder and about 20-50% by weight of an organic solvent for the binder; wherein the binder consists essentially of about (1) 50-70% by weight, based on the weight of the binder, of an ungelled branched polyester urethane having a hydroxyl number of about 10-200 and a weight average molecular weight of about 6,000-30,000; wherein the polyester urethane is the reaction product of a hydroxyl terminated branched polyester and a polyisocyanate; wherein the polyester is the esterification product of an aliphatic glycol, a polyhydric alcohol having at least three hydroxyl groups, and aliphatic dicarboxylic acid and (2) 30-50% by weight, based on the weight of the binder, of a fully methylated and butylated melamine formaldehyde crosslinking agent containing about 50% methylated groups and about 50% butylated groups and having a degree of polymerization of about 1-3.
Claim 3
Dependent Claim
48 words
The coating composition of claim 1 in which the polyester urethane has a hydroxyl number of about 40-160 and is the reaction product of an aliphatic diisocyanate and a hydroxyl terminated branched polyester which is the esterification product of neopentyl glycol, trimethylol propane, azelaic acid and dodecanedioic acid.
Claim 4
Dependent Claim
48 words
The coating composition of claim 1 in which the polyester urethane has a hydroxyl number of about 40-160 and is the reaction product of a cycloaliphatic diisocyanate and a hydroxyl terminated branched polyester which is the esterification product of hexane diol, cyclohexane dimethanol, trimethylol propane and azelaic acid.
Claim 5
Dependent Claim
18 words
The coating composition of claim 2 in which the melamine formaldehyde is about 50% methylated and 50% butylated.
Claim 6
Dependent Claim
25 words
The coating composition of claim 1 containing in addition about 0.1-5% by weight, based on the weight of the binder of an ultraviolet light stabilizer.
Claim 7
Dependent Claim
117 words
The coating composition of claim 1 which comprises 50-80% by weight of film forming binder and 20-50% by weight of an organic solvent for the binder; wherein the binder consists essentially of about (1) an ungelled polyester urethane that has a hydroxyl number of about 40-160 which is the reaction product of trimethyl hexamethyl diisocyanate and a hydroxy terminated branched polyester consisting essentially of the esterification product of neopentyl glycol, trimethylol propane, azelaic acid and dodecanedioc acid and (2) a methylated and butylated melamine formaldehyde being about 50% methylated melamine and 50% butylated and having a degree of polymerization of about 2; and the coating composition contains in addition about 0.1-5% by weight of ultraviolet light stabilizer.
Claim 8
Dependent Claim
13 words
A substrate coated with a cured layer of the composition of claim 1.
Claim 9
Dependent Claim
24 words
A substrate coated with a layer of a pigmented paint composition and having in adherence thereto a layer of the composition 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) | 1989-12-29 | 1990-06-30 | 1990-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-29 | 1994-06-30 | 1994-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-29 | 1998-06-30 | 1998-12-30 | $7700.00 | Window Closed / Lapsed |