Method of producing a curable composition containing 4,4'-bis(me

Details Method of producing a curable composition containing 4,4'-bis(me Method of producing a curable composition containing 4,4'-bis(me

1992-09-28

1993-12-14

Kight, III, John

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

Synthetic resins

From sulfur-containing reactant

529272, 529274, 529293, 529295, 5292955, 529303, 529375, 529376, 529392, 525 55, 525132, 525185, 525189, 525190, C08G 7500

Patent

active

052704394

ABSTRACT:
A method of producing a curable composition containing a prepolymer having a polythioether skeleton, characterized by comprising addition reacting (A) 4,4'-bis(methacryloylthio)-diphenylsulfide having the formula (I): ##STR1## wherein R is a polyvalent organic group composed of an aliphatic or aromatic hydrocarbon and n represents an integer of 2 or more, with the functional group equivalent ratio of the mercapto groups of the component (B) (ii) to the methacryloyl groups of the component (A) being from 0.02 to 1.01, in another vinyl monomer copolymerizable with 4,4'-bis(methacryloylthio)diphenylsulfide having the above formula (I) in the presence of a base catalyst.

REFERENCES:
patent: 4388450 (1983-06-01), Crivello
patent: 4810812 (1989-03-01), Matsuda et al.

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