Process for suspension polymerization of vinyl compound
US5349008A · kind A · utility
21Cited by
14References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1991 |
| Grant date | Sep 20, 1994 |
| Priority date | — |
| Expiry date | Dec 4, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed herein is a process for suspension polymerization of a vinyl polymer which comprises using as the suspending agent a polyvinyl ester polymer having an ionic group at an end thereof or a polyvinyl alcohol polymer having a degree of hydrolysis of 90 mol % or less which is obtained by hydrolysis of the above polyvinyl ester polymer. According to the above-mentioned process, vinyl polymer granules having a sharp granulometric dispersion, high bulk density, high plasticizer absorption and low vinyl monomer residue are obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.