| 摘要 |
PURPOSE:To obtain a thermoplastic resin composition excellent in flexibility, high-temperature properties, compression set resistance, mechanical properties, etc., by mixing a polyamide with a nitrile rubber and a specified organic peroxide and melt-kneading the mixture. CONSTITUTION:The following three components A-C are melt-kneaded together. (A): 5-50pts.wt. polyamide of a m.p. >=170 deg.C; (B): 95-50pts.wt. nitrile rubber; and (C): an organic peroxide having a 1min half-life temperature >=185 deg.C in an amount to provide 0.002-0.05mol of the peroxide group per 100g of the nitrile rubber (B) are melt-kneaded together (the total of A and B being 100pts. wt.). As component A, nylon 11, nylon 12, nylon 6/60 or nylon 6/66/610 is desirable. Examples of component C include di-t-butyl peroxide and 2,5-dimethyl-2,5- di-t-butylperoxyhexyne-3.
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