Stable dispersions of polymers in polyfunctional compounds having a plurality of active hydrogens and polyurethanes therefrom
US4390645A · kind A · utility
68Cited by
11References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 23, 1979 |
| Grant date | Jun 28, 1983 |
| Priority date | — |
| Expiry date | Nov 23, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/8108
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A stable copolymer dispersion is prepared by addition copolymerization of (1) an adduct of an active hydrogen compound, e.g., a polyether polyol, and an active ethylenically unsaturated isocyanate, e. g., 2-isocyanatoethyl methacrylate with (2) ethylenically unsaturated monomers(s), e.g., styrene or mixture thereof with acrylonitrile, while (1) and (2) are dispersed or dissolved in an excess of an active hydrogen polyfunctional compound. The resulting dispersion has a controlled particle size and a viscosity such that it is suitably employed in the production of polyurethane foams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.