Patent US3668277A successfully refreshed from Google Patents.
US3668277A
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Coating compositions comprising a mixture of a polyester and aminoplast
Assignee: Huels AG
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Filing: 1969-10-23
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Granted: 1972-06-06
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Expires: 1989-10-23
Abstract
Abstract Coating compositions resistant to yellowing, solvents, acids and alkalies having the combination of a high elasticity and good hardness are produced by using a mixture of A. AN AMINOPLAST AND B. A POLYESTER HAVING AN AVERAGE MOLECULAR WEIGHT OF BETWEEN 600 AND 3,000 OF I. an alcohol mixture which contains 1,4bis(hydroxymethyl)cyclohexane and another aliphatic or cycloaliphatic diol, and II. an acid mixture of one or more cyclic dicarboxylic acids and one or more acyclic dicarboxylic acids or functional acid derivatives thereof.
Inventors
- 👤 Franz Riemhofer
- 👤 Walter Dittmann
- 👤 Uwe Bethian
- 👤 Karl-Heinz Hornung
- 👤 Ernst-Christian Schutze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:53
CPC Classifications
C; C09; C09D; C09D167/00; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/199; C09D167/02
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
61 words
more than 30 and up to 70 molar percent of at least one other aliphatic or cycloaliphatic diol whose hydroxyl groups are separated by two to eight carbon atoms and contain from zero up to two oxygen atoms in the chain which are separated from each other by at least two carbon atoms, and II. an acid mixture consisting essentially of:
Claim 2
Dependent Claim
35 words
9-67 molar percent of an acyclic dicarboxylic acid component, containing at least one aliphatic dicarboxylic acid of four to 12 carbon atoms or a functional derivative thereof convertible to an ester with said alcohol mixture.
Claim 3
Dependent Claim
50 words
A coating composition according to claim 1, wherein the alcohol mixture consists of 60-40 molar percent of 1,4-bis(hydroxymethyl)cyclohexane and 40-60 molar percent of another aliphatic or cycloaliphatic diol and the acid mixture consists of 75-50 molar percent of the cyclic acid component and 25-50 molar percent of the acyclic acid.
Claim 4
Dependent Claim
20 words
A coating composition according to claim 1, wherein the linear polyesters have an average molecular weight between 1,000 and 2,500.
Claim 5
Dependent Claim
23 words
A coating composition according to claim 1, wherein the acyclic dicarboxylic acid component of the acid mixture contains four to six carbon atoms.
Claim 6
Dependent Claim
20 words
A coating composition according to claim 1, wherein the acyclic dicarboxylic acid component of the acid mixture is adipic acid.
Claim 7
Dependent Claim
19 words
A coating composition according to claim 1, wherein the cyclic acid component of the acid mixture is phthalic anhydride.
Claim 8
Dependent Claim
24 words
A coating composition according to claim 1, wherein the diol component of the alcohol mixture consists of a mixture of 1,4-bis(hydroxymethyl)cyclohexane and ethylene glycol.
Claim 9
Dependent Claim
29 words
A coating composition according to claim 7, wherein the acid mixture consists of 75-60 molar percent of the cyclic acid component and 25-40 molar percent of the acyclic acid.
Claim 10
Dependent Claim
23 words
A coating composition according to claim 1, wherein the diol component of the alcohol mixture consists of a mixture of 1,4-bis(hydroxymethyl)cyclohexane and 1,2-propanediol.
Claim 11
Dependent Claim
30 words
A coating composition according to claim 9, wherein the acid mixture consists of 67-50 molar percent of the cyclic acid component and 33-50 molar percent of the acyclic acid component.
Claim 12
Dependent Claim
20 words
A coating composition according to claim 1, wherein the alcohol mixture consists of a mixture of 1,4-bis-(hydroxymethyl)cyclohexane and diethylene glycol.
Claim 13
Dependent Claim
30 words
A coating composition according to claim 11, wherein the acid mixture consists of 85-70 molar percent of the cyclic acid component and 15-30 molar percent of the acyclic acid component.
Claim 14
Dependent Claim
20 words
A coating composition according to claim 1, wherein the alcohol mixture consists of a mixture of 1,4-bis-(hydroxymethyl)cyclohexane and dipropylene glycol.
Claim 15
Dependent Claim
30 words
A coating composition according to claim 13, wherein the acid mixture consists of 80-60 molar percent of the cyclic acid component and 20-40 molar percent of the acyclic acid component.
Claim 16
Dependent Claim
49 words
A coating composition according to claim 1, wherein the alcohol mixture consists of 60-40 percent of 1,4-bis(hydroxymethyl)cyclohexane and 40-60 molar percent of ethylene glycol, 1,2-propanediol, diethylene glycol or dipropylene glycol, and the acid mixture consists of 75-50 molar percent of phthalic anhydride and 25-50 molar percent of adipic acid.
Claim 17
Dependent Claim
19 words
A coating composition according to claim 15, wherein the molecular weight of the polyester is between 1,000 and 2,500.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |