Patent EP0545650A1 successfully refreshed from Google Patents.
Patent EP0006334B1 successfully refreshed from Google Patents.
EP0006334B1
Expired / Lapsed
EP
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Process for preparation of self-emulsifiable epoxy ester copolymer mixtures and products obtained thereby
Assignee: Akzo Nobel Paints LLC
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Filing: 1979-06-11
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Granted: 1983-03-02
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Expires: 1999-06-11
Abstract
No abstract record available.
Inventors
- 👤 George Lincoln Brown
- 👤 Arthur Theodore Spencer
- 👤 Miksa De Sorgo
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 23:32
CPC Classifications
C; C09; C09D; C09D163/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
163 words
A process for preparing a non-gelled self-emulsifiable epoxy ester copolymer which comprises reacting together (i) an acidic copolymer comprising a solution copolymer of monoethylenically unsaturated monomers containing from 20 to 80 percent by weight, based on the total monomers, of monoethylenically unsaturated carboxylic acid monomers; and (ii) an epoxy resin comprising an aromatic polyether containing oxirane groups and having an average molecular weight of at least 1500, at least 5% of the aromatic polyethers being constituted by diepoxide, in an amount sufficient to constitute at least 40 percent of the total resin solids and to provide a ratio of oxirane groups to carboxyl groups in the acidic copolymer of from 1:2 to 1:20; in an organic solvent in the presence of more than 2 percent by weight, based on the reactants, of an amine esterification catalyst at a temperature sufficient to cause substantially all of the oxirane groups in the epoxy resin to be consumed by the carboxyl groups in the acidic copolymer.
Claim 2
Dependent Claim
163 words
A process for preparing a non-gelled self-emulsifiable epoxy ester copolymer which comprises reacting together (i) an acidic copolymer comprising a solution copolymer of monoethylenically unsaturated monomers containing from 20 to 80 percent by weight, based on the total monomers, of monoethylenically unsaturated carboxylic acid monomers; and (ii) an epoxy resin comprising an aromatic polyether containing oxirane groups and having an average molecular weight of at least 1500, at least 5% of the aromatic polyethers being constituted by diepoxide, in an amount sufficient to constitute at least 40 percent of the total resin solids and to provide a ratio of oxirane groups to carboxyl groups in the acidic copolymer of from 1:2 to 1:20; in an organic solvent in the presence of more than 2 percent by weight, based on the reactants, of an amine esterification catalyst at a temperature sufficient to cause substantially all of the oxirane groups in the epoxy resin to be consumed by the carboxyl groups in the acidic copolymer.
Claim 3
Dependent Claim
27 words
A process according to claim 1, wherein at least a portion of the free carboxyl groups of the epoxy ester copolymer product is reacted with a base.
Claim 4
Dependent Claim
11 words
A process according to claim 2, wherein the base is dimethylaminoethanol.
Claim 5
Dependent Claim
21 words
A process according to any one of claims 1 to 3, wherein the monoethylenically unsaturated carboxylic acid monomer is methacrylic acid.
Claim 6
Dependent Claim
32 words
A process according to claim 4, wherein the acidic copolymer is a solution copolymer of monoethylenically unsaturated monomers containing from 30 to 70 percent, based on the total monomers, of methacrylic acid.
Claim 7
Dependent Claim
23 words
A process according to any one of claims 1 to 5, wherein the acidic compolymer has a molecular weight of 5,000 to 20,000.
Claim 8
Dependent Claim
46 words
A process according to any one of claims 1 to 6, wherein the epoxy resin is a mixture of aromatic polyethers at least 5 percent by weight of which contain oxirane groups and at least 5 percent by weight of which are devoid of oxirane groups.
Claim 9
Dependent Claim
33 words
A process according to any one of claims 1 to 7, wherein the epoxy resin is a mixture of aromatic polyethers from 40 to 90 percent by weight of which are diglycidyl ethers.
Claim 10
Dependent Claim
33 words
A process according to any one of claims 1 to 8, wherein the epoxy resin is used in an amount sufficient to constitute from 50 to 80 percent of the total resin solids.
Claim 11
Dependent Claim
40 words
A process according to any one of claims 1 to 9, wherein the epoxy resin is used in an amount sufficient to provide a ratio of oxirane groups to carboxyl groups in the acidic copolymer of from 1:4 to 1:10.
Claim 12
Dependent Claim
33 words
A process according to any one of claims 1 to 10, wherein the amine esterification catalyst is used in an amount of from 4 to 10 percent by weight, based on the reactants.
Claim 13
Dependent Claim
18 words
A process according to any one of claims 1 to 11, wherein the amine esterification catalyst is dimethylaminoethanol.
References Cited (Backward Citations)
No citation records indexed.
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