Liquid isocyanate prepolymers
Abstract
Abstract The present invention is directed to a liquid, storage-stable isocyanate prepolymer having an isocyanate group content of from 3 to 30% by weight, prepared by reacting (i) an isocyante selected from the group consisting of methylene bis(phenylisocyanates), polymethylene poly(phenylisocyanates), and mixtures thereof, and (ii) a polyamine of the structure <IMAGE> where R represents an m-valent residue obtained by the removal of m-functional groups from a compound having m-functional groups and having a molecular weight of from 76 to about 10,000, X represents <IMAGE> R1 represents hydrogen or an inert substituent, R2 represents hydrogen, a C1 to C5 alkyl group or a phenyl group, n is 1 or 2, and m is an integer of from 2 to 8.
Inventors
- 👤 William E. Slack
Bibliographic Details
Claims Analysis
Total Claims: 4References Cited (Backward Citations)
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