Polymers and polymerization processes
US6455665B1 · kind B1 · utility
3Cited by
7References
74Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2001 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | Jun 21, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/90
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides improved processes for purifying polymer preparations by removing contaminants, such as metal contaminants. The present invention also provides improved processes for producing phosphopolymers, which can yield improved polymers in terms of molecular weight, homogeneity, consistency and purity. Polymers and polymer preparations also are provided. The present invention is time, labor and energy efficient, and thus marks an improvement over past approaches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.