Patent US4413037A successfully refreshed from Google Patents.
US4413037A
Expired / Lapsed
US
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Acrylic modified anionic water dispersible styrene hydroxyethyl (meth)acrylate copolymers
Assignee: Valspar Corp
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Filing: 1982-09-29
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Granted: 1983-11-01
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Expires: 2002-09-29
Abstract
Abstract This invention provides a graft copolymer of at least one acrylic monomer and a random copolymer of a styrene and hydroxyethyl (meth)acrylate, in which at least about 8 percent of the total weight of said graft copolymer is derived from acrylic acid, methacrylic acid, or both. It also provides anionic aqueous dispersions of such graft copolymers and coating compositions containing them.
Inventors
- 👤 Michael A. Tobias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:21
CPC Classifications
C; C09; C09D; C09D151/00; C09D151/003; C08; C08F; C08F257/00; C08F257/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
116 words
A coating composition comprising: (A) a graft copolymer of an acrylic monomer or monomers or of acrylic monomer or monomers and other monomers copolymerizable therewith, on a backbone comprising a random copolymer of a styrene and between about 20 weight percent and about 30 weight percent of the random copolymer of hydroxyethyl (meth)acrylate, in which at least about 8 percent of the total weight of said graft copolymer is derived from acrylic acid, methacrylic acid, or both, said graft copolymer being neutralized with ammonia, ammonium hydroxide, or a tertiary amine; and (B) a cross-linking agent; said composition being diluted with water to a solids content of between about 10 weight percent and about 40 weight percent.
Claim 2
Dependent Claim
116 words
A coating composition comprising: (A) a graft copolymer of an acrylic monomer or monomers or of acrylic monomer or monomers and other monomers copolymerizable therewith, on a backbone comprising a random copolymer of a styrene and between about 20 weight percent and about 30 weight percent of the random copolymer of hydroxyethyl (meth)acrylate, in which at least about 8 percent of the total weight of said graft copolymer is derived from acrylic acid, methacrylic acid, or both, said graft copolymer being neutralized with ammonia, ammonium hydroxide, or a tertiary amine; and (B) a cross-linking agent; said composition being diluted with water to a solids content of between about 10 weight percent and about 40 weight percent.
Claim 3
Dependent Claim
20 words
A composition according to claim 1 wherein the styrene in the random copolymer component of said graft copolymer is styrene.
Claim 4
Dependent Claim
27 words
A composition according to claim 2 wherein the acrylic monomers and other monomers copolymerizable therewith in said graft copolymer component are methacrylic acid, styrene and butyl acrylate.
Claim 5
Dependent Claim
12 words
A substrate coated with the coating composition of claim 1 and baked.
Claim 6
Dependent Claim
12 words
A substrate coated with the coating composition of claim 2 and baked.
Claim 7
Dependent Claim
12 words
A substrate coated with the coating composition of claim 3 and baked.
Claim 8
Dependent Claim
16 words
A coated substrate of claim 4, 5, or 6, wherein said substrate is a metal substrate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-31 | 1987-05-02 | 1987-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-31 | 1991-05-02 | 1991-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-31 | 1995-05-02 | 1995-11-01 | $7700.00 | Window Closed / Lapsed |