Purification means
US6593431B2 · kind B2 · utility
3Cited by
24References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 19, 2002 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Apr 19, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F6/28
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymers derived from 4-acyloxystyrene are purified by fractionalization plus heating and cooling of the polymers in alcoholic solvents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.