Copolymers of p-mercaptostyrene and its esters
US4929694A · kind A · utility
4Cited by
1References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 4, 1989 |
| Grant date | May 29, 1990 |
| Priority date | — |
| Expiry date | May 4, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F212/30
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
There are provided novel copolymers of a p-mercaptostyrene ester, e.g., the acetate, with at least one comonomer selected from the group consisting of styrene, N-methylmaleimide, maleic anhydride and p-acetoxystyrene. These copolymers may be hydrolyzed to produce corresponding copolymers of p-mercaptostyrene with at least one comonomer selected from the group consisting of styrene, N-methylmaleimide, maleic acid and p-vinylphenol. The copolymers have application as heavy metal sequestering agents in various forms and structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.