Polydiorganosiloxane/thiuram disulfide block copolymers and radi

Details Polydiorganosiloxane/thiuram disulfide block copolymers and radi Polydiorganosiloxane/thiuram disulfide block copolymers and radi

1990-04-13

1992-12-29

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

528 25, 528 38, 528 21, 556420, C08G 7706

Patent

active

051752263

ABSTRACT:
Polydiorganosiloxane/thiuram disulfide block copolymers having the formula: ##STR1## well adapted as "polyiniferters" in the radical polymerization of vinyl monomers, e.g., the (meth)acrylates or styrene, are prepared by reacting a corresponding .alpha.,.omega.-(amino)diorganopolysiloxane with CS.sub.2 in the presence of a tertiary amine and an oxidizing agent, e.g., iodine.

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Journal of Applied Polymer Science, vol. 29, No. 3, Mar. 29, 1984, pp. 877-889, New York--Inoue et al.

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