Radiation resistant polypropylene resins

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

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524387, 524528, 524533, 524570, 524583, 525306, C08L 2316

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active

053767160

ABSTRACT:
A radiation resistant resin suitable for the manufacture of, for example, disposable medical supplies comprises a semicrystalline polypropylene or propylene-ethylene and from 1500 to 5000 ppm triallyl trimellitate. The resin exhibits substantially no increase in melt flow rate after irradiation to a dosage of up to 5 Mrads, and may contain up to about 5% by weight of a polybutylene and/or up to about 3000 ppm of a sorbital based clarifying agent.

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CA 96(8):52831y.
CA 87(24):185533p.
D. Kostoski et al. The Effect of Antioxidants on the Morphology of Gamma Irradiated Isotactic Polypropylene, Radiat. Phys. Chem. vol. 35, Nos. 1--3, pp. 190-193, 1990.
Technical Bulletin: Duraflex Polybutylene 8010, Shell Chemical Co., SC:751-87.
Cross-Linking with Radiation, Encyclopedia of Polymer Science, vol. 4, pp. 418-449.
Radiation-Resistant Polymers, Encyclopedia of Polymer Science vol. 13, pp. 667-708.

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