Dispersion-polymerization process using block copolymers
US4026962A · kind A · utility
13Cited by
14References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 1975 |
| Grant date | May 31, 1977 |
| Priority date | — |
| Expiry date | May 2, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F287/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
There is disclosed a process of dispersion-polymerizing vinyl monomers promoted by free-radical catalysts. This process comprises dispersing under stirring in water a block copolymer of the A-B type wherein A represents a lipophilic block and B a hydrophilic block, adding one or more vinyl monomers containing the promoter and heating the mixture with stirring to the desired temperature. This process enables beads or balls of the desired polymer to be obtained having very regular size distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.