Purification means
US6787611B2 · kind B2 · utility
2Cited by
26References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 24, 2003 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Feb 24, 2023 |
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.