Oligomers and homopolymers of meta- or para-isopropenyl- alpha , alpha -dimethylbenzylisocyanate

摘要

Aromatic solvent-soluble linear oligomers or homopolymers of meta- or para-isopropenyl- alpha , alpha -dimethylbenzylisocyanate characterized by high isocyanate content are disclosed. Such oligomers or homopolymers are made by catalytic solution polymerization of the monomer in methylene chloride and/or toluene solution at a temperature of from about -80 DEG C. to about -25 DEG C., followed by low-temperature neutralization of the polymerization catalyst.