Polycarbonate compositions resistant to gamma radiation

Details Polycarbonate compositions resistant to gamma radiation Polycarbonate compositions resistant to gamma radiation

C - Chemistry, Metallurgy

08

L

C08L 69/00 (2006.01) C08K 5/06 (2006.01)

Patent

CA 2080331

Mo-3676 MD-91-44 POLYCARBONATE COMPOSITION RESISTANT TO GAMMA RADIATION ABSTRACT OF THE DISCLOSURE A thermoplastic polycarbonate molding composition resistant to gamma-radiation is disclosed. The composition incorporates about 0.05 to 5.0 percent by weight of and end-capped poly(alkyl oxide) conforming to Image where hal denotes bromine or chlorine, n is about 10 to 40 and x is 1 to 5. The composition was found to be resistant to the yellowing which characterized polycarbonate compositions upon exposure to gamma radiation. The composition of the invention not only has low initial color change upon exposure but also a small change in yellowness after long term storing. Mo3676

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