Polysiloxane-polycarbonate block copolymers based on certain dih

Details Polysiloxane-polycarbonate block copolymers based on certain dih Polysiloxane-polycarbonate block copolymers based on certain dih

1990-08-08

1991-11-26

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

528 26, 528 29, 528 43, C08G 7706

Patent

active

050683020

ABSTRACT:
Polydiorganosiloxane-polycarbonate block copolymers based on dihydrodiphenylcycloalkanes corresponding to formula (I) ##STR1## in which R.sup.1, R.sup.2 independently of one another represent hydrogen, halogen, preferably chlorine or bromine, C.sub.1-8 alkyl, C.sub.5-6 cycloalkyl, C.sub.6-10 aryl and C.sub.7-12 aralkyl, preferably phenyl-C.sub.1-4 -alkyl, more especially benzyl,

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