Low water-absorptive nylon rim material and process for producing molded product using said material.

摘要

A molded product of good dimensional stability can be produced by using a low water-absorptive nylon RIM material wherein 30 to 90% by weight of a lactam and 70 to 10% by weight of an olefinic polyhydric alcohol of branched structure having a molecular weight of 1,000 to 10,000 are blended in the presence of an activator represented by the following structural formula: <CHEM> wherein Ar is a divalent aromatic residue, X is a halogen atom directly bonded to the aromatic ring, m is an integer of 1 to 6, Y and Y' represent each an acyl group selected from <CHEM> and n and n' mean each an integer of 3 to 11, and optionally 10 to 50% by weight in total, based on the blend, of a fibrous or flaky filler having an average aspect ratio of 5 to 15 and a spherical filler having an average aspect ratio of 1 to 3 are mixed with the blend.