Thiol containing compounds and their preparation

Details Thiol containing compounds and their preparation Thiol containing compounds and their preparation

1976-01-26

1977-12-06

Gallagher, R.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560115, 560158, C07C101447

Patent

active

040618641

ABSTRACT:
This invention is directed to thiol containing compounds having no hydrolytically sensitive groupings which are useful as polymerization transfer agents or as curing agents in curable polymer systems containing polyenes and a free radical initiator. The thiol containing compounds are formed by reacting a polyol with an allylic halide to form a poly(unsaturated ether) whose double bonds are converted to thioesters by free radical catalyzed addition of SH groups from a thiolcarboxylic acid, e.g. thioacetic acid and the like. Hydrolysis of the thioester yields the desired thiol or polythiol derivative. Alternatively the poly(unsaturated ether) is reacted with H.sub.2 S to give the desired thiol or polythiol directly in a single step. The polythiols can be chain extended by any difunctional compound that reacts with the hydroxy groups on the polythiol.

REFERENCES:
patent: 3142699 (1964-07-01), Wagner et al.

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