Isocyanate-terminated polyether-based polymer prepolymer compositions
CA 1083555 A · Owner: Eastman Chemical Company · Inventors: Cuscurida, Michael; Speranza, George P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
ISOCYANATE-TERMINATED, POLYETHER-BASED POLYMER PREPOLYMER COMPOSITIONS (D#75,061-F), Abstract of the Disclosure 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 reaction 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 …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted August 12, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 12, 1997.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.