US3852375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating compositions
Assignee: Huels AG
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Filing: 1971-04-20
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Granted: 1974-12-03
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Expires: 1991-04-20
Abstract
Abstract Aminoplast-ester coating compositions which are substantially solvent-free and which have good resistance to solvents and chemical attack and good adherence to metals and good mechanical properties are produced from an aminoplast-ester mixture wherein the ester has a molecular weight of less than 600 and is the esterification product of one or both of ethylene glycol and 1,2propanediol and a mixture of phthalic acid and adipic acid or like acids.
Inventors
- 👤 U Biethan
- 👤 J Dorffel
- 👤 K Hornung
- 👤 F Riemhofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:47
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/20; C08G63/18; C09; C09D; C09D167/00
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
67 words
IN A COATING COMPOSITION HAVING A VISCOSITY OF UP TO 500 POISES AND WHOSE BINDER CONSISTS ESSENTIALLY OF AN AMINOPLASTESTER MIXTURE CONSISTING OF A. 45-15 PERCENT OF AT LEAST ONE OF AN AMINOPLAST COMPONENT AND A LOW-MOLECULAR PRECURSOR THEREOF, AND B. 55-85 PERCENT BY WEIGHT OF A HYDROXY GROUP-CONTAINING ESTER COMPONENT HAVING AN ACID NUMBER OF LESS THAN 10 MG. KOH/G., AND PRODUCED BY THE ESTERIFICATION OF
Claim 2
Dependent Claim
67 words
IN A COATING COMPOSITION HAVING A VISCOSITY OF UP TO 500 POISES AND WHOSE BINDER CONSISTS ESSENTIALLY OF AN AMINOPLASTESTER MIXTURE CONSISTING OF A. 45-15 PERCENT OF AT LEAST ONE OF AN AMINOPLAST COMPONENT AND A LOW-MOLECULAR PRECURSOR THEREOF, AND B. 55-85 PERCENT BY WEIGHT OF A HYDROXY GROUP-CONTAINING ESTER COMPONENT HAVING AN ACID NUMBER OF LESS THAN 10 MG. KOH/G., AND PRODUCED BY THE ESTERIFICATION OF
Claim 3
Dependent Claim
108 words
AN ALD COHOL REACTANT CONSISTING ESSENTIALLY OF: 1. 0-50 PERCENT OF ONE OR MORE ALIPHATIC POLYOLS OF 3 OR 4 HYDROXY GROUPS AND 3-6 CARBPON ATOMS, AND 2. 100-50 MOLAR PERCENT OF A DIOL COMPONENT CONSISTING ESSENTIALLY OF: A. AT LEAST 70 MOLAR PERCENT OF ONE OR BOTH OF ETHYLENE GLYCOL AND 1,2-PROPENEDIOL, AND B. 0-30 MOLAR PERCENT OF ONE OR MORE OTHER ALIPHATIC OR CYCLOALIPHATIC DIOLS WHOSE HYDROXYL GROUPS ARE SEPARATED BY 2-8 CARBON ATOMS AND 0-2 OF THE CARBON ATOMS IN THE CHAIN ARE SUBSTITUTED BY OXYGEN ATOMS WHICH ARE SEPARATED FROM EACH OTHER AND FROM THE HYDROXYL GROUPS BY AT LEAST 2 CARBON ATOMS, AND
Claim 4
Dependent Claim
108 words
AN ALD COHOL REACTANT CONSISTING ESSENTIALLY OF: 1. 0-50 PERCENT OF ONE OR MORE ALIPHATIC POLYOLS OF 3 OR 4 HYDROXY GROUPS AND 3-6 CARBPON ATOMS, AND 2. 100-50 MOLAR PERCENT OF A DIOL COMPONENT CONSISTING ESSENTIALLY OF: A. AT LEAST 70 MOLAR PERCENT OF ONE OR BOTH OF ETHYLENE GLYCOL AND 1,2-PROPENEDIOL, AND B. 0-30 MOLAR PERCENT OF ONE OR MORE OTHER ALIPHATIC OR CYCLOALIPHATIC DIOLS WHOSE HYDROXYL GROUPS ARE SEPARATED BY 2-8 CARBON ATOMS AND 0-2 OF THE CARBON ATOMS IN THE CHAIN ARE SUBSTITUTED BY OXYGEN ATOMS WHICH ARE SEPARATED FROM EACH OTHER AND FROM THE HYDROXYL GROUPS BY AT LEAST 2 CARBON ATOMS, AND
Claim 5
Dependent Claim
87 words
100-50 molar percent of a diol component consisting essentially of: a. at least 70 molar percent of one or both of ethylene glycol and 1,2-propanediol, and b. 0-30 molar percent of one or more other aliphatic or cycloaliphatic diols whose hydroxyl groups are separated by 2-8 carbon atoms and 0-2 of the carbon atoms in the chain are substituted by oxygen atoms which are separated from each other and from the hydroxyl groups by at least 2 carbon atoms, and II. an acid mixture consisting essentially of:
Claim 6
Dependent Claim
87 words
100-50 molar percent of a diol component consisting essentially of: a. at least 70 molar percent of one or both of ethylene glycol and 1,2-propanediol, and b. 0-30 molar percent of one or more other aliphatic or cycloaliphatic diols whose hydroxyl groups are separated by 2-8 carbon atoms and 0-2 of the carbon atoms in the chain are substituted by oxygen atoms which are separated from each other and from the hydroxyl groups by at least 2 carbon atoms, and II. an acid mixture consisting essentially of:
Claim 7
Dependent Claim
50 words
20-80 molar percent of at least one saturated aliphatic dicarboxylic acid of 4-12 carbon atoms or a functional acid derivative thereof convertible to an ester of the alcohol reactant the improvement wherein the coating composition contains from 0-20 percent solvent and the polyester has an average molecular weight of 200-400.
Claim 8
Dependent Claim
50 words
20-80 molar percent of at least one saturated aliphatic dicarboxylic acid of 4-12 carbon atoms or a functional acid derivative thereof convertible to an ester of the alcohol reactant the improvement wherein the coating composition contains from 0-20 percent solvent and the polyester has an average molecular weight of 200-400.
Claim 9
Dependent Claim
46 words
An unpigmented coating composition according to claim 1 containing 0-10 percent by weight of a solvent wherein the ester component is produced by the esterification of an alcohol reactant consisting of 0-30 molar percent of the polyol component and 100-70 molar percent of the diol component.
Claim 10
Dependent Claim
54 words
An unpigmented coating composition according to claim 1 containing 0-10 percent by weight of a solvent wherein the ester component is produced by the esterification of an acid mixture consisting essentially of 70-30 molar percent of the aromatic or cyclo-aliphatic dicarboxylic acid component and 30-70 molar percent of the saturated aliphatic dicarboxylic acid component.
Claim 11
Dependent Claim
8 words
A pigmented coating composition according to claim 1.
Claim 12
Dependent Claim
31 words
A coating composition according to claim 4 wherein the ester component is produced by the esterification of an alcohol reactant consisting solely of one or both of ethylene glycol and 1,2-propanediol.
Claim 13
Dependent Claim
17 words
A coating composition according to claim 4 wherein the saturated aliphatic dicarboxylic acid contains 4-6 carbon atoms.
Claim 14
Dependent Claim
22 words
A coating composition according to claim 4 wherein the aromatic or cycloaliphatic dicarboxylic acid portion of the acid mixture is phthalic anhydride.
Claim 15
Dependent Claim
16 words
A coating composition according to claim 6 wherein the saturated aliphatic dicarboxylic acid is adipic acid.
Claim 16
Dependent Claim
28 words
A coating composition according to claim 4 wherein the binder consists essentially of 40-20 percent by weight of component A and 60-80 percent by weight of component B.
Claim 17
Dependent Claim
24 words
A coating composition according to claim 4 wherein component A is one or more low-molecular weight aminoplast precursors which are liquid at 20* C.
Claim 18
Dependent Claim
34 words
A coating composition according to claim 10 wherein component A is a hexamethylol melamine derivative which is a liquid at 20* C. and which is partially etherified with an alcohol containing 1-4 carbon atoms.
Claim 19
Dependent Claim
93 words
AN ACID MIXTURE CONSISTING ESSENTIALLY OF: 1. 80-20 MOLAR PERCENT OF AT LEAST ONE AROMATIC OR CYCLOALIPHATIC DICARBOXYLIC ACID WHOSE CARBOXYL GROUPS ARE POSITIONEED ORTHO OR META OR A FUNCTIONAL ACID DERIVATIVE THEREOF CONVERTIBLE TO AN ESTER OF THE ALCOHOL REACTANT, AND 2. 20-80 MOLAR PERCENT OF AT LEAST ONE SATURATED ALIPHATIC DICARBOXYLIC ACID OF 4-12 CARBON ATOMS OR A FUNCTIONAL ACID DERIVATIVE THEREOF CONVERTIBLE TO AN ESTER OF THE ALCOHOL REACTANT THE IMPROVEMENT WHEREIN THE COATING COMPOSITION CONTAINS FROM 0-20 PERCENT SOLVENT AND THE POLYESTER HAS AN AVERAGE MOLECUALR WEIGHT OF 200-400.
Claim 20
Dependent Claim
93 words
AN ACID MIXTURE CONSISTING ESSENTIALLY OF: 1. 80-20 MOLAR PERCENT OF AT LEAST ONE AROMATIC OR CYCLOALIPHATIC DICARBOXYLIC ACID WHOSE CARBOXYL GROUPS ARE POSITIONEED ORTHO OR META OR A FUNCTIONAL ACID DERIVATIVE THEREOF CONVERTIBLE TO AN ESTER OF THE ALCOHOL REACTANT, AND 2. 20-80 MOLAR PERCENT OF AT LEAST ONE SATURATED ALIPHATIC DICARBOXYLIC ACID OF 4-12 CARBON ATOMS OR A FUNCTIONAL ACID DERIVATIVE THEREOF CONVERTIBLE TO AN ESTER OF THE ALCOHOL REACTANT THE IMPROVEMENT WHEREIN THE COATING COMPOSITION CONTAINS FROM 0-20 PERCENT SOLVENT AND THE POLYESTER HAS AN AVERAGE MOLECUALR WEIGHT OF 200-400.
Claim 21
Dependent Claim
89 words
A coating composition according to claim 1 wherein the binder consists essentially of 40-20 by weight of component A and 60-80 percent by weight of component B, component A being one or more low-molecular weight aminoplast precursors which are liquid at 20* C. and component B being an ester produced by the esterification of an acid mixture consisting essentially of 70-30 molar percent of phthalic anhydride and 30-70 molar percent of adipic acid and an alcohol reactant consisting essentially of one or both of ethylene glycol and propylene glycol.
Claim 22
Dependent Claim
34 words
A coating composition according to claim 12 wherein component A is a hexamethylol melamine derivative which is a liquid at 20* C. and which is partially etherified with an alcohol containing 1-4 carbon atoms.
References Cited (Backward Citations)
US2901465A
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US2915486A
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US3476697A
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US3461186A
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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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |