Gamma irradiated thermoplastics and articles

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

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524117, C08K 5529

Patent

active

055591671

ABSTRACT:
Thermoplastic compositions are stabilized with a phosphite of the formula: ##STR1## wherein Y.sup.1 is an alkyl and Y.sup.2 is selected from tert-butyl and sec-butyl. The phosphite is particularly effective for thermoplastics irradiated with high energy gamma-radiation. Irradiated articles made with the phosphite stabilized thermoplastic compositions exhibit improved discoloration resistance compared to various other phosphite stabilized thermoplastic compositions.

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