18-08-1998 дата публикации
Номер: CA2009626C
A method of producing and a polyamide resin composition are provided having a multi-phase structure and a process for producing the same are disclosed, the composition comprising: (A) from 60 to 97 parts by weight of a polyamide resin containing at least 2 parts by weight of (A-1) a polyamide resin having a concentration ratio of terminal carboxyl group to terminal amino group of 1.5 or more, (B) from 3 to 40 parts by weight of an ethylene copolymer comprising: (a) from 40 to 90% by weight of an ethylene unit, (b) from 5 to 60% by weight of an .alpha., .beta.-unsaturated carboxylic acid alkyl ester unit, and (c) from 0.3 to 10% by weight of a maleic anhydride unit, and (C) from 0.01 to 20 parts by weight, per 100 parts by weight of the sum of the components (A) and (B), of a compound selected from the group consisting of an aliphatic diamine, an aliphatic diamine carbamate, an aliphatic polyamine, an alicyclic polyamine, an aromatic amine, an ethylene copolymer comprising an ethylene unit and an N,N-dialkylaminoalkyl .alpha.,.beta.-unsaturated carboxylic acid ester unit, an ethylene copolymer comprising an ethylene unit and an N,N-dialkylaminoalkyl .alpha.,.beta.-unsaturated carboxylic acid amide unit, and a compound having at least two epoxy groups in the molecule thereof, and wherein a part of the polyamide resins (A) constitutes a matrix phase, the ethylene copolymer (B) constitutes a first-order disperse phase, and the remainder of the polyamide resin (A) constitutes a second-order disperse phase in the first-order disperse phase. second-order disperse phase in the first-order disperse phase, and the process comprising: a step of melt-kneading (A-1) from 20 to 60 parts by weight of a polyamide resin having a concentration ratio of terminal carboxyl group to terminAl amino group of 1.5 or more with (B) from 40 to 80 parts by weight of an ethylene copolymer comprising: (a) from 40 to 90% by weight of an ethylene unit, (b) from 5 to 60% by weight of an .alpha.,. ...
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