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US4332709A
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US
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Water-thinnable binders and their preparation
Assignee: Resolution Performance Products LLC
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Filing: 1981-01-16
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Granted: 1982-06-01
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Expires: 2001-01-16
Abstract
Abstract Water soluble binders for can lacquers are prepared by reacting an epoxy resin (polyglycidyl ether of polyhydric phenol) with an aliphatic amino carboxylic acid, e.g., (glycine, alanine, glutamic acid), wherein at least 50% of the acid groups have been neutralized with a base (alkali metal hydroxide, tertiary amine or quaternary ammonium hydroxide.)
Inventors
- 👤 Petrus G. Kooijmans
- 👤 Wolfgang Kunze
- 👤 Arend Noordam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:28
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4064; C08G59/50; C08G59/52; C09; C09D; C09D163/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
55 words
A water-thinnable curable binder suitable for coatings which comprises reacting a polyglycidyl ether of a polyhydric phenol with an aqueous solution of an aliphatic amino acid in which at least 50% of the acid groups have been neutralized with a base, in a ratio of from about 0.7 to 1.2 aminohydrogen equivalents per epoxy equivalent.
Claim 2
Dependent Claim
55 words
A water-thinnable curable binder suitable for coatings which comprises reacting a polyglycidyl ether of a polyhydric phenol with an aqueous solution of an aliphatic amino acid in which at least 50% of the acid groups have been neutralized with a base, in a ratio of from about 0.7 to 1.2 aminohydrogen equivalents per epoxy equivalent.
Claim 3
Dependent Claim
33 words
The binder of claim 1 wherein the polyglycidyl ether is a polyglycidyl ether of 2,2-bis(4-hydroxyphenyl)propane having a weight between 340 and 2000 and a weight per epoxide of from about 170 to 1000.
Claim 4
Dependent Claim
39 words
The binder of claim 1 wherein the carboxyl functions of the amino acid have been at least partially neutralized with a base selected from the group consisting of an alkali metal hydroxide, a tertiary amine, and quaternary ammonium hydroxide.
Claim 5
Dependent Claim
11 words
The binder of claim 3 wherein the tertiary amine is 2-dimethylamino-2-methyl-1-propanol.
Claim 6
Dependent Claim
13 words
The binder of claim 3 wherein the alkali metal hydroxide is potassium hydroxide.
Claim 7
Dependent Claim
14 words
The binder of claim 1 wherein the amino acid is an amino carboxylic acid.
Claim 8
Dependent Claim
16 words
The binder of claim 6 wherein the amino carboxylic acid is glycine, alanine, or glutamic acid.
Claim 9
Dependent Claim
14 words
The binder of claim 1 wherein the amino acid is an amino sulphonic acid.
Claim 10
Dependent Claim
23 words
The binder of claim 1 wherein the neutralizing agent is an alkali metal hydroxide, characterized in that the binder is precipitated by acidification.
Claim 11
Dependent Claim
19 words
The binder of claim 1 wherein the binder is redissolved in an aqueous solution of ammonia or an amine.
Claim 12
Dependent Claim
24 words
An aqueous thermosetting coating composition comprising (A) the binder of claim 1, (B) a curing amount of a water-thinnable cross-linking resin, and (C) water.
Claim 13
Dependent Claim
14 words
The coating composition of claim 11 wherein the crosslinking agent is a melamine-formaldehyde resin.
Claim 14
Dependent Claim
14 words
The coating composition of claim 12 wherein the melamine-formaldehyde resin is a hexamethoxymethyl melamine.
References Cited (Backward Citations)
US2658885A
Cited
US2633458A
Cited
US3336241A
Cited
US3547885A
Cited
US4094844A
Cited
US4098744A
Cited
US4119609A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-31 | 1985-11-30 | 1986-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-31 | 1989-11-30 | 1990-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-31 | 1993-11-30 | 1994-06-01 | $7700.00 | Window Closed / Lapsed |