Process for preparing alternating copolymers of olefinically unsaturated sulfonate salts and unsaturated dicarboxylic acid anhydrides
US5210163A · kind A · utility
13Cited by
11References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1991 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | Sep 30, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F228/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Substantially alternating 1:1 copolymers of olefinically unsaturated sulfonate salts such as sodium methallylsulfonate and .alpha., .beta.-unsaturated aliphatic dicarboxylic acid anhydrides such as maleic anhydide are produced by free radical polymerization using a polar non-reactive organic solvent such as acetic acid. The copolymers and their derivatives are useful as water-soluble dispersants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.