Polymer-prepolymer composition prepared by polymerizing an ethylenically unsaturated monomer in the presence of an isocyanate-terminated prepolymer
US3968089A · kind A · utility
33Cited by
4References
21Claims
0Family size
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Key dates
| Filing date | Nov 18, 1974 |
| Grant date | Jul 6, 1976 |
| Priority date | — |
| Expiry date | Nov 18, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L75/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel isocyanate-terminated polyether-based polymer prepolymers useful in urethane applications are produced by polymerization of one or more ethylenically unsaturated monomers in the presence of an isocyanate-terminated prepolymer obtained by reaction of an organic polyisocyanate with a polyhydroxy-containing adduct obtained by reacton of an alkylene oxide with a polyfunctional initiator containing two to six active hydrogen atoms. These isocyanate-terminated polyether-based polymers prepolymer compositions are useful in the preparation of flexible urethane foams and moisture-cured adhesives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.