US4066586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester-modified vinyl polymer and production method thereof
Assignee: Resonac Corp
•
Filing: 1976-07-21
•
Granted: 1978-01-03
•
Expires: 1996-07-21
Abstract
Abstract A polyester-modified vinyl polymer comprising 50 - 3% by weight of a polyester component and 50 - 97% by weight of a polyvinyl component grafted on the polyester component, the polyester component having an oil length of 5 to 20%, an average molecular weight of 1,000 to 6,000, and an α,β-unsaturated dicarboxylic acid component content of 1 to 5% by weight on the polyester component. The polyester-modified vinyl polymer is useful in a high-solid solvent type coating composition.
Inventors
- 👤 Tuneo Tanuma
- 👤 Teruo Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:13
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/46; C08G63/48; C08F; C08F299/00; C08F299/02; C08F299/04; C08F299/0442; C08F299/0457; C08G63/52; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
110 words
A process for producing a polyester-modified vinyl polymer for use in a high-solids coating composition, which comprises graft-polymerizing 97 to 50% by weight of at least one vinyl monomer selected from the group consisting of an acrylic monomer, styrene, a styrene derivative, acrylonitrile, acrylamide, vinyl chloride and vinyl acetate, in the presence of 3 to 50% by weight of a polyester having an oil length of 5 to 20%, an average molecular weight of 1,000 to 6,000, and an α,β -unsaturated dicarboxylic acid component content of 1 to 5% by weight on the polyester, by use of 5% by weight or more (based on monomeric component) of an azobisnitrile catalyst.
Claim 2
Dependent Claim
110 words
A process for producing a polyester-modified vinyl polymer for use in a high-solids coating composition, which comprises graft-polymerizing 97 to 50% by weight of at least one vinyl monomer selected from the group consisting of an acrylic monomer, styrene, a styrene derivative, acrylonitrile, acrylamide, vinyl chloride and vinyl acetate, in the presence of 3 to 50% by weight of a polyester having an oil length of 5 to 20%, an average molecular weight of 1,000 to 6,000, and an α,β -unsaturated dicarboxylic acid component content of 1 to 5% by weight on the polyester, by use of 5% by weight or more (based on monomeric component) of an azobisnitrile catalyst.
Claim 3
Dependent Claim
27 words
A process according to claim 1, wherein 10 to 30% by weight of the polyester and 90 to 70% by weight of the vinyl monomer are used.
Claim 4
Dependent Claim
14 words
A process according to claim 1, wherein the vinyl monomer is an acrylic monomer.
Claim 5
Dependent Claim
31 words
A process according to claim 3, wherein the acrylic monomer is selected from the group consisting of an alkyl acrylate, alkyl methacrylate, hydroxyalkyl acrylate, hydroxyalkyl methacrylate, acrylic acid and methacrylic acid.
Claim 6
Dependent Claim
26 words
A process according to claim 4, wherein the acrylic monomer is selected from the group consisting of ethyl acrylate, propyl acrylate, butyl acrylate and hexyl acrylate.
Claim 7
Dependent Claim
26 words
A process according to claim 4, wherein the acrylic monomer is selected from the group consisting of ethyl methacrylate, propyl methacrylate, butyl methacrylate and hexyl methacrylate.
Claim 8
Dependent Claim
22 words
A process according to claim 4, wherein the acrylic monomer is selected from the group consisting of 2-hydroxyethyl acrylate and 2-hydroxyethyl methacrylate.
Claim 9
Dependent Claim
26 words
A process according to claim 1, wherein a mixture of vinyl monomers contains at least 70 to 100% by weight of at least one acrylic monomer.
Claim 10
Dependent Claim
31 words
A process according to claim 1, wherein the oil length of the polyester used has been adjusted to 5 to 20% by use of a glycidyl ester of a fatty acid.
Claim 11
Dependent Claim
14 words
A process according to claim 1, wherein the azobisnitrile catalyst is azobisisobutyronitrile or 2,2'-azobis(2,4-dimethylvaleronitrile).
Claim 12
Dependent Claim
22 words
A process according to claim 1, wherein the styrene derivative is selected from the group consisting of vinyl toluene and α-methyl styrene.
Claim 13
Dependent Claim
36 words
A process according to claim 1, wherein the graft-polymerization is conducted at a temperature in the range of 60° to 140° C. by adding dropwise the vinyl monomer and the azobisnitrile catalyst to the polyester resin.
Claim 14
Dependent Claim
23 words
A process according to claim 12, wherein the vinyl monomer and the azobisnitrile catalyst are added separately and concurrently to the polyester resin.
Claim 15
Dependent Claim
12 words
A polyester-modified vinyl polymer produced by the process according to claim 1.
Claim 16
Dependent Claim
49 words
A high solids coating composition having a solids content of 70% by weight or more, comprising 30 - 95% by weight, based on the solids content, of the polyester-modified vinyl polymer according to claim 7, a hardener in an amount sufficient to harden the vinyl polymer, and a solvent.
Claim 17
Dependent Claim
16 words
The composition of claim 15, wherein the hardener is an aminoplast, blocked polyisocyanate or epoxy resin.
Claim 18
Dependent Claim
25 words
The composition of claim 16, wherein the aminoplast is a melamine resin, C 1-4 alkoxylated melamine resin, urea resin or C 1-4 alkoxylated urea resin.
Claim 19
Dependent Claim
26 words
The composition of claim 15, wherein the hardener is present in an amount of 5 to 30% by weight based on the solids and hardener content.
Claim 20
Dependent Claim
22 words
The composition of claim 18, wherein the hardener is an aminoplast or blocked polyisocyanate present in an amount of 15 to 20%.
Claim 21
Dependent Claim
21 words
The composition of claim 18, wherein the hardener is an epoxy resin present in an amount of not more than 15%.
References Cited (Backward Citations)
US2600457A
Cited
US3052659A
Cited
US3287293A
Cited
US3256225A
Cited
US3650997A
Cited
US3786010A
Cited
US3748293A
Cited
US3761435A
Cited
US3920595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-02 | 1981-07-04 | 1982-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-02 | 1985-07-04 | 1986-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-02 | 1989-07-04 | 1990-01-03 | $7700.00 | Window Closed / Lapsed |