NCO-terminated compounds from adducts of mercapto-functional pol

Details NCO-terminated compounds from adducts of mercapto-functional pol NCO-terminated compounds from adducts of mercapto-functional pol

1986-10-20

1988-01-19

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From silicon reactant having at least one...

528 32, 556419, 556420, 556422, C08G 7704

Patent

active

047205342

ABSTRACT:
Disclosed is a free-radical addition product of a mercapto-functional polyhydric alcohol and a vinyl-type silane having at least one hydrolyzable group directly attached to a silicon atom, the addition product prepared by reacting the mercapto-functional polyhydric alcohol and the vinyl-type silane in the presence of a free radical initiator. The addition product contains at least two hydroxyl groups bonded to carbon atoms and at least one silicon atom bonded to at least one hydrolyzable group.
The resulting polyhydroxyl-functional addition products can be chain extended using organic polyisocyanates to produce isocyanate-terminated compounds which also contain silicon atoms directly bonded to hydrolyzable groups along the molecule chains.

REFERENCES:
patent: 4652664 (1987-03-01), Singer et al.

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