US4126596A
Expired / Lapsed
US
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Two package polymeric epoxy compositions having improved potlife
Assignee: PPG Industries Inc
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Filing: 1977-02-23
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Granted: 1978-11-21
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Expires: 1997-02-23
Abstract
Abstract Two-package polymeric compositions which form cured products having excellent stain and solvent resistance and having improved potlife comprise a polyepoxide and an addition interpolymer containing pendent salt groups formed by reacting carboxyl groups with a hindered amine and pendent amine groups formed by reacting carboxyl groups with an alkylenimine. The addition interpolymer when mixed with the polyepoxide reacts to form a cured, hard, stain and solvent resistant material. The stability of the mixed compositions, i.e., its potlife, is lengthened by utilizing a sterically-hindered tertiary amine to form the salt groups of the interpolymer.Stability of the addition interpolymer prior to mixing is improved by utilizing therein monomers which provide aminolysis-resistant groups in the interpolymer.
Inventors
- 👤 Karl F. Schimmel
- 👤 James A. Claar
- 👤 Jerome A. Seiner
- 👤 Marco Wismer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:06
CPC Classifications
C; C08; C08L; C08L33/00; C08L33/02; C08L63/00; Y; Y10; Y10S; Y10S524/00; Y10S524/906; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
130 words
A two-package polymeric composition comprising cocurable resinous components which consist essentially of: (a) a polyepoxide having a 1,2-epoxy equivalence of greater than 1.0 and a molecular weight below about 4000; and (b) an addition interpolymer containing a polymeric backbone of at least two interpolymerized, ethylenicallyunsaturated monomers, at least one of which contains carboxyl groups, and pendent thereto: (1) anionic salt groups formed by reacting a part of said carboxyl groups with a sterically-hindered tertiary amine having the structure: ##STR3## wherein R 1 , R 2 and R 3 are each aliphatic or cycloaliphatic radicals having from 2 to 10 carbon atoms, and (2) amine groups formed by reacting a part of said carboxyl groups with an alkylenimine; said components (a) and (b) being interreactive to form a crosslinked, hard material.
Claim 2
Dependent Claim
130 words
A two-package polymeric composition comprising cocurable resinous components which consist essentially of: (a) a polyepoxide having a 1,2-epoxy equivalence of greater than 1.0 and a molecular weight below about 4000; and (b) an addition interpolymer containing a polymeric backbone of at least two interpolymerized, ethylenicallyunsaturated monomers, at least one of which contains carboxyl groups, and pendent thereto: (1) anionic salt groups formed by reacting a part of said carboxyl groups with a sterically-hindered tertiary amine having the structure: ##STR3## wherein R 1 , R 2 and R 3 are each aliphatic or cycloaliphatic radicals having from 2 to 10 carbon atoms, and (2) amine groups formed by reacting a part of said carboxyl groups with an alkylenimine; said components (a) and (b) being interreactive to form a crosslinked, hard material.
Claim 3
Dependent Claim
37 words
The composition of claim 1 wherein said resinous components consist essentially of from about 5 to about 95 percent by weight of component (a) and from about 95 to about 5 percent by weight of component (b).
Claim 4
Dependent Claim
20 words
The composition of claim 1 wherein said composition is thinnable or reducible with organic solvents, water or a mixture thereof.
Claim 5
Dependent Claim
12 words
The composition of claim 1 in which said hindered amine is diethylethanolamine.
Claim 6
Dependent Claim
148 words
A two-package polymeric coating composition, the film-forming vehicle components of which consist essentially of: (a) a polyepoxide having a 1,2-epoxy equivalence of greater than 1.0 and a molecular weight below about 4000; and (b) an addition interpolymer containing a polymeric backbone of at least one interpolymerized, ethylenically-unsaturated carboxyl group-containing monomer and at least one interpolymerized, ethylenically-unsaturated aminolysis resistant organic monomer, said polymeric backbone having pendent thereto: (1) anionic salt groups formed by reacting a part of said carboxyl groups with a sterically-hindered tertiary amine having the structure: ##STR4## wherein R 1 , R 2 and R 3 are each aliphatic or cycloaliphatic radicals having from 2 to 10 carbon atoms, (2) amine groups formed by reacting a part of said carboxyl groups with an alkylenimine, and (3) aminolysis resistant organic groups; said components (a) and (b) being interreactive to form a crosslinked, hard, solvent and stain resistant material.
Claim 7
Dependent Claim
148 words
A two-package polymeric coating composition, the film-forming vehicle components of which consist essentially of: (a) a polyepoxide having a 1,2-epoxy equivalence of greater than 1.0 and a molecular weight below about 4000; and (b) an addition interpolymer containing a polymeric backbone of at least one interpolymerized, ethylenically-unsaturated carboxyl group-containing monomer and at least one interpolymerized, ethylenically-unsaturated aminolysis resistant organic monomer, said polymeric backbone having pendent thereto: (1) anionic salt groups formed by reacting a part of said carboxyl groups with a sterically-hindered tertiary amine having the structure: ##STR4## wherein R 1 , R 2 and R 3 are each aliphatic or cycloaliphatic radicals having from 2 to 10 carbon atoms, (2) amine groups formed by reacting a part of said carboxyl groups with an alkylenimine, and (3) aminolysis resistant organic groups; said components (a) and (b) being interreactive to form a crosslinked, hard, solvent and stain resistant material.
Claim 8
Dependent Claim
12 words
The composition of claim 5 wherein said sterically-hindered tertiary amine is diethylethanolamine.
Claim 9
Dependent Claim
37 words
The composition of claim 5 wherein said film-forming components consist essentially of from about 5 to about 95 percent by weight of component (a) and from about 95 to about 5 percent by weight of component (b).
Claim 10
Dependent Claim
16 words
The composition of claim 5 in which said polyepoxide is a polyglycidyl ether of a polyphenol.
Claim 11
Dependent Claim
24 words
The composition of claim 5 in which either or both of components (a) and (b) are in a solvent medium composed predominantly of water.
Claim 12
Dependent Claim
21 words
The composition of claim 5 wherein the carboxyl groups of said interpolymer are derived from an alpha, beta-ethylenically unsaturated carboxylic acid.
Claim 13
Dependent Claim
19 words
The composition of claim 10 wherein said carboxylic acid is acrylic acid or methacrylic acid, or a mixture thereof.
Claim 14
Dependent Claim
33 words
The composition of claim 5 wherein said amine groups of said interpolymer are formed by reacting from about 15 mole percent to about 50 mole percent of said carboxyl groups with said alkylenimine.
Claim 15
Dependent Claim
16 words
The composition of claim 5 wherein said alkylenimine is propylenimine or ethylenimine or a mixture thereof.
Claim 16
Dependent Claim
45 words
The polymeric composition of claim 5 wherein said pendent aminolysis resistant organic groups of said interpolymer are formed from monoolefinic and diolefinic hydrocarbons, unsaturated substituted or unsubstituted carboxylic acid amides, or sterically-hindered branched chain or alicyclic esters of alpha, alkyl-substituted carboxylic acids or mixtures thereof.
Claim 17
Dependent Claim
20 words
The composition of claim 14 wherein said groups are formed from styrene, alpha-methyl styrene, vinyl toluene or a mixture thereof.
Claim 18
Dependent Claim
20 words
The polymeric composition of claim 14 wherein said groups are formed from isobutyl methacrylate, cyclohexyl methacrylate or a mixture thereof.
Claim 19
Dependent Claim
27 words
The composition of claim 1 wherein the ethylenically unsaturated monomer which contains carboxyl groups comprises from about 5 percent to about 60 percent of the addition interpolymer.
Claim 20
Dependent Claim
25 words
The composition of claim 17 wherein the alkylenimine is reacted with from about 5 mole percent to about 95 mole percent of the carboxyl groups.
Claim 21
Dependent Claim
27 words
The composition of claim 5 wherein the ethylenically unsaturated monomer which contains carboxyl groups comprises from about 5 percent to about 60 percent of the addition interpolymer.
Claim 22
Dependent Claim
25 words
The composition of claim 19 wherein the alkylenimine is reacted with from about 5 mole percent to about 95 mole percent of the carboxyl groups.
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) | 1981-11-20 | 1982-05-22 | 1982-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-20 | 1986-05-22 | 1986-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-20 | 1990-05-22 | 1990-11-21 | $7700.00 | Window Closed / Lapsed |