US4075148A
Expired / Lapsed
US
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Water-based coating compositions
Assignee: PPG Industries Inc
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Filing: 1975-07-08
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Granted: 1978-02-21
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Expires: 1995-07-08
Abstract
Abstract Coating compositions which are water soluble or dispersible after basic neutralization comprise the reaction product in the proportion by weight of 90:10 to 10:90 of (1) one or more epoxy resins containing 1 to 2 free oxirane groups, which can be partially esterified by fatty acids, with (2) one or more compounds obtained by the reaction of diene polymerizates with alpha,beta unsaturated carboxylic or dicarboxylic acids or anhydrides, in the presence of an alcoholic moderator solvent. The reaction is conducted at a temperature of at least 130° C. These coating compositions may contain, if desired, other components such as pigments, partial esters and methylol phenol ethers. They can be applied by roller, spraying, dipping, and are especially adapted for application by electrodeposition, to obtain after curing coatings which are both flexible and hard.
Inventors
- 👤 Jean Zatmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:43
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/4423; C09D5/4426; C09D163/00; Y; Y10; Y10S; Y10S524/00; Y10S524/901
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
124 words
A process for obtaining coating compositions containing the reaction product of epoxy resins having free oxirane functional groups and of diene polymers modified by carboxylic acids or anhydrides, said compositions being water-soluble after neutralization with a base, which comprises reacting until said free oxirane functional groups have reacted: (1) at least one epoxy resin containing 1 to 2 free oxirane groups, with (2) at least one compound obtained by the reaction of a diene polymerizate with an alpha, beta-unsaturated carboxylic or dicarboxylic acid or anhydride, in the presence of a liquid alcohol moderator solvent at a temperature of at least about 130° C., said liquid alcohol moderator solvent remaining in a liquid state at said reaction temperature during reaction of said free oxirane groups.
Claim 2
Dependent Claim
124 words
A process for obtaining coating compositions containing the reaction product of epoxy resins having free oxirane functional groups and of diene polymers modified by carboxylic acids or anhydrides, said compositions being water-soluble after neutralization with a base, which comprises reacting until said free oxirane functional groups have reacted: (1) at least one epoxy resin containing 1 to 2 free oxirane groups, with (2) at least one compound obtained by the reaction of a diene polymerizate with an alpha, beta-unsaturated carboxylic or dicarboxylic acid or anhydride, in the presence of a liquid alcohol moderator solvent at a temperature of at least about 130° C., said liquid alcohol moderator solvent remaining in a liquid state at said reaction temperature during reaction of said free oxirane groups.
Claim 3
Dependent Claim
33 words
A process according to claim 1 wherein the reaction is carried out at a temperature in the range of 130° to 230° C. until the free oxirane groups initially present have completely disappeared.
Claim 4
Dependent Claim
16 words
The process according to claim 1 wherein said epoxy resin is partially esterified with fatty acids.
Claim 5
Dependent Claim
20 words
A process according to claim 1 wherein component (2) is the reaction product of 1,4- or 1,2-polybutadiene with maleic anhydride.
Claim 6
Dependent Claim
14 words
A process according to claim 1 wherein the alcoholic moderator solvent is a glycol.
Claim 7
Dependent Claim
20 words
The process according to claim 1 wherein components (1) and (2) are in a weight ratio of 90:10 to 10:90.
Claim 8
Dependent Claim
100 words
A water-soluble coating composition essentially free of unreacted oxirane functional groups comprising the base-neutralized reaction product of (1) at least one epoxy resin containing 1 to 2 free oxirane groups with (2) at least one compound obtained by the reaction of a diene polymerizate with an alpha, beta-unsaturated carboxylic or dicarboxylic acid or anhydride, said reaction product being formed in the presence of a liquid alcoholic moderator solvent and at a temperature of at least about 130° C., with said liquid alcohol moderator solvent remaining in a liquid state at said reaction temperature during reaction of said free oxirane groups.
Claim 9
Dependent Claim
100 words
A water-soluble coating composition essentially free of unreacted oxirane functional groups comprising the base-neutralized reaction product of (1) at least one epoxy resin containing 1 to 2 free oxirane groups with (2) at least one compound obtained by the reaction of a diene polymerizate with an alpha, beta-unsaturated carboxylic or dicarboxylic acid or anhydride, said reaction product being formed in the presence of a liquid alcoholic moderator solvent and at a temperature of at least about 130° C., with said liquid alcohol moderator solvent remaining in a liquid state at said reaction temperature during reaction of said free oxirane groups.
Claim 10
Dependent Claim
33 words
The composition according to claim 7, wherein the reaction is carried out at a temperature in the range of 130° to 230° C. until the free oxirane groups initially present have completely disappeared.
Claim 11
Dependent Claim
16 words
The composition according to claim 7 wherein said epoxy resin is partially esterified with fatty acids.
Claim 12
Dependent Claim
20 words
A composition according to claim 7 wherein component (2) is the reaction product of 1,4- or 1,2-polybutadiene with maleic anhydride.
Claim 13
Dependent Claim
14 words
A composition according to claim 7 wherein the alcoholic moderator solvent is a glycol.
Claim 14
Dependent Claim
20 words
The composition according to claim 7 wherein components (1) and (2) are in a weight ratio of 90:10 to 10:90.
Claim 15
Dependent Claim
112 words
A water-soluble composition essentially free of unreacted oxirane functional groups comprising (A) the base-neutralized reaction product of (1) one or more epoxy resins containing 1 to 2 free oxirane groups, with (2) one or more compounds obtained by the reaction of a diene polymerizate with an alpha, beta-unsaturated carboxylic or dicarboxylic acid or anhydride said reaction product being formed in the presence of a liquid alcoholic moderator solvent, said liquid alcoholic moderator solvent remaining in a liquid state at said reaction temperature during reaction of said free oxirane groups, and (B) from 5 to 20 parts by weight, for 100 parts by weight of (A), of at least one methylol phenol ether.
Claim 16
Dependent Claim
112 words
A water-soluble composition essentially free of unreacted oxirane functional groups comprising (A) the base-neutralized reaction product of (1) one or more epoxy resins containing 1 to 2 free oxirane groups, with (2) one or more compounds obtained by the reaction of a diene polymerizate with an alpha, beta-unsaturated carboxylic or dicarboxylic acid or anhydride said reaction product being formed in the presence of a liquid alcoholic moderator solvent, said liquid alcoholic moderator solvent remaining in a liquid state at said reaction temperature during reaction of said free oxirane groups, and (B) from 5 to 20 parts by weight, for 100 parts by weight of (A), of at least one methylol phenol ether.
Claim 17
Dependent Claim
33 words
The composition according to claim 13 wherein the reaction is carried out at a temperature in the range of 130° C. to 230° C. until the oxirane groups initially present have completely disappeared.
Claim 18
Dependent Claim
20 words
The composition according to claim 13 wherein component (2) is the reaction product of 1,4- or 1,2-polybutadiene with maleic anhydride.
Claim 19
Dependent Claim
33 words
The composition according to claim 13 wherein the methylol phenol ether has the formula ##STR2## wherein n is an integer of 1 to 3 and wherein R 1 is an unsaturated aliphatic group.
Claim 20
Dependent Claim
17 words
The composition according to claim 16 wherein R 1 is an allyl, methallyl, crotyl or butenyl group.
Claim 21
Dependent Claim
20 words
The composition according to claim 16 wherein components (1) and (2) are in a weight ratio of 90:10 to 10:90.
Claim 22
Dependent Claim
20 words
The method of applying a coating to a conductive substrate which comprises electrodepositing the water-based coating composition of claim 7.
Claim 23
Dependent Claim
20 words
The method of applying a coating to a conductive substrate which comprises electrodepositing the water-based coating composition of claim 13.
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) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |