Polydiorganosiloxane/polycarbonate block cocondensates based on

Details Polydiorganosiloxane/polycarbonate block cocondensates based on Polydiorganosiloxane/polycarbonate block cocondensates based on

1989-12-13

1992-04-28

Marquis, Melvyn I.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525474, 528 26, 528 29, C08F28302, C08F28312

Patent

active

051090767

ABSTRACT:
Thermoplastic polydiorganosiloxane/polycarbonate block copolymers based on dihydroxydiphenylcycloalkanes corresponding to the following general formula (I): ##STR1## wherein R.sup.1 and R.sup.2 independently represent hydrogen, halogen, preferably chlorine or bromine, C.sub.1 -C.sub.8 alkyl, C.sub.5 or C.sub.6 cycloalkyl, C.sub.5 -C.sub.10 aryl or C.sub.7 -C.sub.12 aralkyl, preferably phenyl-C.sub.1 -C.sub.4 -alkyl, in particular benzyl: m represents an integer of from 4 to 7, preferably 4 or 5;

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patent: 4584360 (1986-04-01), Paul et al.
patent: 4732949 (1988-03-01), Paul et al.
patent: 4982014 (1991-01-01), Freitag

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