Stable dispersions of polymers in polyfunctional compounds having a plurality of active hydrogens and polyurethanes produced therefrom
US4460715A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1981 |
| Grant date | Jul 17, 1984 |
| Priority date | — |
| Expiry date | Nov 10, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/81
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A stable copolymer dispersion is prepared by addition copolymerization of (1) a monomeric adduct of an active hydrogen compound, e.g., a polyether polyol, and an acrylyl compound such as methacryloyl chloride with (2) ethylenically unsaturated monomer(s), e.g., styrene or a mixture thereof with acrylonitrile, while (1) and (2) are dispersed or dissolved in an excess of an active hydrogen polyfunctional compound such as a polyether polyol. The molar ratio of acrylyl moiety to active hydrogen compound is less than 0.1:1. 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.