Method for the preparation of polyvinyl phosphonic acid
US4822861A · kind A · utility
3Cited by
16References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1988 |
| Grant date | Apr 18, 1989 |
| Priority date | — |
| Expiry date | Mar 15, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing polyvinyl phosphonic acid by the steps of polymerizing bis(2-chloroethyl) vinyl phosphonate in the presence of a free radical initiator or catalyst, such as dicumyl peroxide. The resulting poly bis(2-chloroethyl) vinyl phosphonate is then subjected to acid hydrolysis to obtain high purity polyvinyl phosphonic acid having measurable and controllable molecular weight distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.