US3678128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating compositions comprising a mixture of a polyester and an aminoplast
Assignee: Huels AG
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Filing: 1969-10-23
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Granted: 1972-07-18
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Expires: 1989-10-23
Abstract
Abstract Coating compositions resistant to yellowing, solvents, acids and alkalies and having the combination of 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 400-4,000 OF (I) a diol mixture which includes one or both of ethylene glycol and 1,2-propanediol, and (II) an acid mixture which consists essentially of 91-33 percent of a cyclic dicarboxylic acid and 9-67 percent of an acyclic dicarboxylic acid.
Inventors
- 👤 Franz Riemhofer
- 👤 Walter Dittman
- 👤 Uwe Biethan
- 👤 Karl-Heinz Hornung
- 👤 Ernst-Christian Schultze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:12
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C09; C09D; C09D167/00; C09D167/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
66 words
0-30 molar percent of the total alcohol mixture of another diol selected from the group consisting of aliphatic and cycloaliphatic diols or mixtures thereof whose hydroxyl groups are separated by two to eight carbon atoms and contain from zero 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
9-27 molar percent of an acyclic acid component of at least one aliphatic dicarboxylic acid of four to 12 carbon atoms or a functional acid derivative thereof convertible to said ester with said alcohol mixture.
Claim 3
Dependent Claim
41 words
A coating composition according to claim 1 wherein the acyclic acid component of the acid mixture contains four to six carbon atoms and the alcohol component consists essentially of 70-30 molar percent of ethylene glycol and 30-70 molar percent of 1,2-propanediol.
Claim 4
Dependent Claim
58 words
30 molar percent of the total alcohol mixture of another diol selected from the group consisting of aliphatic and cycloaliphatic diols or mixtures thereof whose hydroxyl groups are separated by two to eight carbon atoms and contain from zero to two oxygen atoms in the chain which are separated from each other by at least two carbon atoms.
Claim 5
Dependent Claim
27 words
A coating composition according to claim 1 wherein the polyesters have an average molecular weight between 600 and 3,000 and are produced from alcohol mixture consisting of:
Claim 6
Dependent Claim
20 words
A coating composition according to claim 3 wherein the polyesters have an average molecular weight between 1,000 and 2, 500.
Claim 7
Dependent Claim
33 words
A coating composition according to claim 3 wherein the polyesters are produced from an acid mixture consisting of 75-67 molar percent of the cyclic component and 25-33 molar percent of the acyclic component.
Claim 8
Dependent Claim
24 words
A coating composition according to claim 3 wherein the polyesters are produced from an acid mixture consisting of adipic acid as the acyclic component.
Claim 9
Dependent Claim
36 words
A coating composition according to claim 3 wherein the polyesters are produced from an acid mixture in which the acyclic component consists of 70-30 molar percent of adipic acid and 30-70 molar percent of succinic acid.
Claim 10
Dependent Claim
24 words
A coating composition according to claim 3 wherein the polyesters are produced from an acid mixture in which phthalic anhydride is the cyclic component.
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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |