Polycarbonates with alkylphenyl end groups, their preparation an

Details Polycarbonates with alkylphenyl end groups, their preparation an Polycarbonates with alkylphenyl end groups, their preparation an

1979-09-14

1981-05-26

Taylor, Hosea E.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528128, 528171, 528174, 528196, 528198, 528204, C08G 828

Patent

active

042699649

ABSTRACT:
This development is concerned with aromatic thermoplastic polycarbonates with special chain terminators which give the polymers enhanced hydrolysis resistance and impact toughness. These chain terminators are alkyl substituted monohydroxy phenyls in which each phenyl is substituted by one alkyl group having 8 or 9 carbon atoms and about 47 to 89% of its hydrogen atoms trisubstituted on carbon atoms with up to about 20% of the substituents in the ortho position and the balance at the para position. This development is also concerned with a process for synthesizing such polymers by using such chain terminators as reactants in generically known synthesis methods for polycarbonates.

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Japanese Laid-Open Specification No. 34,992/76.

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