Low temperature process for the preparation of graft copolymer dispersions
US3953393A · kind A · utility
56Cited by
6References
8Claims
0Family size
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Key dates
| Filing date | Jan 7, 1974 |
| Grant date | Apr 27, 1976 |
| Priority date | — |
| Expiry date | Jan 7, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/635
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Graft copolymer dispersions of improved viscosity and superior particle size distribution are prepared by the in situ polymerization of vinyl monomers in unsaturation-containing polyols in the presence of a free-radical catalyst and certain chain transferring agents at temperatures below 100.degree. C. The dispersions are low viscous liquids which may be advantageously employed in the preparation of polyurethanes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.