US4439587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water dispersible acrylic modified chlorinated rubber
Assignee: Valspar Corp
•
Filing: 1982-03-08
•
Granted: 1984-03-27
•
Expires: 2002-03-08
Abstract
Abstract This invention provides a graft copolymer of at least one acrylic monomer and chlorinated natural or synthetic rubber, 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 aqueous dispersions of such graft copolymers and coating compositions containing them.
Inventors
- 👤 Carlos J. Martinez
- 👤 Albert C. Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:53
CPC Classifications
C; C09; C09D; C09D151/00; C09D151/04; C08; C08F; C08F291/00; C08F291/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696; Y10T428/31826; Y10T428/31942; Y10T428/31949; Y10T428/31964
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
53 words
A graft copolymer of at least one acrylic monomer or of at least one acrylic monomer and other monomers copolymerizable therewith, and chlorinated natural rubber or chlorinated synthetic rubber, in which at least about 8 percent of the total weight of said graft copolymer is derived from acrylic acid, methacrylic acid, or both.
Claim 2
Dependent Claim
53 words
A graft copolymer of at least one acrylic monomer or of at least one acrylic monomer and other monomers copolymerizable therewith, and chlorinated natural rubber or chlorinated synthetic rubber, in which at least about 8 percent of the total weight of said graft copolymer is derived from acrylic acid, methacrylic acid, or both.
Claim 3
Dependent Claim
17 words
The graft copolymer of claim 1, wherein said rubber is natural rubber chlorinated to about 65 percent.
Claim 4
Dependent Claim
15 words
The graft copolymer of claim 1, wherein said monomers comprise methacrylic acid and isobutyl methacrylate.
References Cited (Backward Citations)
US3037948A
Cited
US4285847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-27 | 1987-09-26 | 1988-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-27 | 1991-09-26 | 1992-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-27 | 1995-09-26 | 1996-03-27 | $7700.00 | Window Closed / Lapsed |