Water soluble polymers
US4554298A · kind A · utility
10Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1984 |
| Grant date | Nov 19, 1985 |
| Priority date | — |
| Expiry date | Nov 16, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D7/45
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A water soluble polymer containing acid groups can be fractionated into higher and lower molecular weight fractions by partial neutralization of the polymer as a solution in a blend of water and a low molecular weight alcohol and separating the resultant aqueous and organic phases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.