Low molecular weight monoalkyl substituted phosphinate and phosphonate copolymers
US5256746A · kind A · utility
35Cited by
3References
13Claims
0Family size
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Key dates
| Filing date | Apr 25, 1991 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | Apr 25, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F20/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Monoalkyl phosphinate and monoalkyl phosphonate derivatives of low molecular weight water soluble polymers are preferentially prepared by copolymerizing hypophosphorous acid, monoethylenically unsaturated monocarboxylic acid(s) and an effective amount of a C.sub.3 -C.sub.8 monoethylenically unsaturated dicarboxylic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.