Gamma radiation resistant polycarbonate compositions

Details Gamma radiation resistant polycarbonate compositions Gamma radiation resistant polycarbonate compositions

1989-02-01

1993-02-16

Morgan, Kriellion S.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524109, 524111, 524369, 524376, 524377, 524378, C08K 515, C08K 506

Patent

active

051872110

ABSTRACT:
The invention relates to thermoplastic polycarbonate molding compositions which are rendered resistant to gamma-radiation by incorporating therewith about 0.1 to about 5 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 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, n is an integer of at least 1 and preferably 1 to about 100 and Y and Y.sup.1 independently are a hydrogen atom, a C.sub.6 -C.sub.10 aryl, C.sub.1 -C.sub.10 alkyl or a C.sub.6 -C.sub.18 alkylaryl or a C.sub.6 -C.sub.18 arylalkyl radical or ##STR2## wherein m is 1 or 3-6, R.sub.1, R.sub.2 and R.sub.3 independently are a hydrogen atom or a C.sub.1 -C.sub.10 alkyl, C.sub.6 -C.sub.10 aryl or a C.sub.6 -C.sub.18 alkylaryl radical.

REFERENCES:
patent: 3385814 (1968-05-01), von Falkai et al.
patent: 3385815 (1968-05-01), Yoshitake et al.
patent: 4451641 (1986-05-01), Sublett et al.
patent: 4460445 (1986-07-01), Rekers
patent: 4624972 (1986-11-01), Nace
patent: 4904710 (1990-02-01), Nace

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