US4031051A
Expired / Lapsed
US
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Hydrolyzed reaction product of a polyepoxide with a phenolic compound having a group hydrolyzable to a carboxyl and curing agent therefor
Assignee: PPG Industries Inc
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Filing: 1976-02-09
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Granted: 1977-06-21
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Expires: 1996-02-09
Abstract
Abstract Coating compositions applicable by conventional coating techniques as well as by electrodeposition are provided by reacting an epoxy-containing organic material with a compound containing at least one phenolic hydroxyl group and a group hydrolyzable to a carboxyl group. Examples of such hydrolyzable groups include ester groups, amide groups and nitrile groups. Compounds include esters of benzoic, salicylic and diphenolic acids, and phenolphthalein. The resultant product may then be hydrolyzed and solubilized, using any of the known hydrolyzing agents, e.g., aqueous potassium hydroxide, aqueous sodium hydroxide and aqueous solutions of the various amines used in the art.
Inventors
- 👤 Rostyslaw Dowbenko
- 👤 Joseph R. Marchetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:56
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/625; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/4423; C09D5/4426; Y; Y10; Y10S; Y10S524/00; Y10S524/901
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
127 words
An aqueous composition comprising: A. the solubilized reaction product of 1. a polyepoxide having an epoxy equivalency greater than 1.0, and 2. a compound containing at least one phenolic hydroxyl group and containing at least one group hydrolyzable to a carboxyl group and having the following structural formula: (HO).sub.n R--(W).sub.m wherein n and m are integers of at least 1, wherein R is an organic radical containing at least one aryl group and wherein at least one of the hydroxyl groups is attached to at least one of the aryl groups of R, and wherein W is a group hydrolyzable to a carboxyl group, and B. a curing agent selected from the class consisting of aminoplast resins, phenolic resins and blocked or semi-blocked polyisocyanates and combinations thereof.
Claim 2
Dependent Claim
127 words
An aqueous composition comprising: A. the solubilized reaction product of 1. a polyepoxide having an epoxy equivalency greater than 1.0, and 2. a compound containing at least one phenolic hydroxyl group and containing at least one group hydrolyzable to a carboxyl group and having the following structural formula: (HO).sub.n R--(W).sub.m wherein n and m are integers of at least 1, wherein R is an organic radical containing at least one aryl group and wherein at least one of the hydroxyl groups is attached to at least one of the aryl groups of R, and wherein W is a group hydrolyzable to a carboxyl group, and B. a curing agent selected from the class consisting of aminoplast resins, phenolic resins and blocked or semi-blocked polyisocyanates and combinations thereof.
Claim 3
Dependent Claim
17 words
The aqueous composition of claim 1 wherein said compound is an alkyl ester of hydroxy benzoic acid.
Claim 4
Dependent Claim
27 words
The aqueous composition of claim 2 wherein said alkyl ester of hydroxy benzoic acid is selected from the group consisting of methyl p-hydroxy benzoate and methyl salicylate.
Claim 5
Dependent Claim
17 words
The aqueous composition of claim 1 wherein said compound is an alkyl ester of 4,4-bis(p-hydroxy phenyl)pentanoic acid.
Claim 6
Dependent Claim
28 words
The aqueous composition of claim 1 wherein the equivalent ratio of epoxy groups in the polyepoxide to hydroxyl groups in said compound is between about 1:0.25 and 1:1.25.
Claim 7
Dependent Claim
16 words
The aqueous composition of claim 5 wherein said equivalent ratio is between about 1:0.5 and 1:1.
Claim 8
Dependent Claim
17 words
The aqueous composition of claim 1 which further includes an acrylic resin suitable for use in electrodeposition.
Claim 9
Dependent Claim
14 words
The aqueous composition of claim 7 wherein the curing agent is an aminoplast resin.
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) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |