Gamma-radiation resistant polycarbonate compositions

Details Gamma-radiation resistant polycarbonate compositions Gamma-radiation resistant polycarbonate compositions

1988-04-28

1989-02-14

Jacobs, Lewis T.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524263, 524265, 524611, C08K 554

Patent

active

048046922

ABSTRACT:
The invention relates to thermoplastic polycarbonate molding compositions which are rendered resistant to gamma-radiation by incorporating therewith about 0.05 to about 10 percent by weight of a stabilizing agent selected from the group consisting of ##STR1## wherein R is a hydrogen or a halogen atom or a C.sub.1 -C.sub.10 alkyl, a C.sub.6 -C.sub.10 aryl, C.sub.1 -C.sub.22 acyl, C.sub.6 -C.sub.18 alkylaryl or a C.sub.4 -C.sub.10 cycloalkyl radical, m is 1 or 3 to 6, n is an integer of about 20 to 70 and Y is a radical conforming to ##STR2## wherein R, R' and R" independently one of the others are selected from C.sub.1 -C.sub.10 alkyl and C.sub.6 -C.sub.12 aryl radicals preferably C.sub.1 -C.sub.4 alkyl radical.

REFERENCES:
patent: 4148773 (1979-04-01), Mark et al.
patent: 4230611 (1980-10-01), Mark et al.
patent: 4397973 (1983-08-01), Scott et al.
patent: 4451641 (1984-05-01), Sublett et al.
patent: 4460445 (1984-07-01), Rekers
patent: 4624972 (1986-11-01), Nace

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