Process for producing impact-resistant polyamide resin compositi

Details Process for producing impact-resistant polyamide resin compositi Process for producing impact-resistant polyamide resin compositi

1989-08-09

1991-04-23

Carrillo, Ana L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525183, 525179, C08L 7700

Patent

active

050101366

ABSTRACT:
An impact-resistant polyamide resin is produced by
preparing Mixture (I) by melt-kneading (A) a polyamide resin with (B) at least one modified olefin polymer selected from the group consisting of olefin rubbers having an unsaturated dicarboxylic acid anhydride added thereto, .alpha.-olefin polymers having an unsaturated dicarboxylic acid anhydride added thereto, crystalline ethylene-.alpha.-olefin copolymers having an unsaturated dicarboxylic acid anhydride added thereto, and ethylene-ethylenic unsaturated ester copolymers having an unsaturated dicarboxylic acid anhydride added thereto,
preparing Mixture (II) by melt-kneading Mixture (I) with (C) a polyfunctional compound having in the molecule two or more functional groups reactive with carboxyl group, carboxylic acid anhydride group or amino group, and
melt-kneading Mixture (II) with (D) a polyamide resin.
The impact-resistant polyamide resin composition obtained by the process of the present invention has an excellent processability and can be made into various molded products, sheets or films by injection molding or extrusion molding. The thus obtained products have good physical properties, in particular, an excellent impact strength.

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