Polyamide resin composition and process for producing the same
AssigneeToray Industries, Inc.
InventorsKoya Kato, Toru Nishimura, Toru Yamanaka
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Abstract
Provided is a polyamide resin composition comprising a melt blend of (A) a polyamide resin, (B) a phyllosilicate, and (C) an olefin compound having a carboxylic acid anhydride group in the molecule or a polymer of the olefin compound, in which the phyllosilicate (B) has a reactive functional group bonded thereto and is such that the exchangeable metal ions existing in the inter layers are ion-exchanged with organic onium ions. The composition has a reduced inorganic ash content and has both high stiffness and high ductility. Optionally, the composition contains an inorganic filler apart from the phyllosilicate, an impact modifier, and a flame retardant, still having high stiffness and high ductility.
Claims7
A polyamide resin composition consisting essentially of a melt blend of (A) a polyamide resin, (B) a phyllosilicate having carbon-carbon unsaturated group, bonded thereto, said phyllosilicate is such that the exchangeable metal ions existing in the interlayers are ion-exchanged with organic onium ions, and wherein the amount of the phyllosilicate is from 0.1 to 40% by weight in terms of the inorganic ash content of said composition, and (c) an olefin compound having a carboxylic acid anhydride group in the molecule or a polymer of the olefin compound, wherein the olefin compound having a carboxylic acid anhydride group in the molecule (C) is at least one selected from maleic anhydride, itaconic anhydride, glutaconic anhydride, citraconic anhydride, and aconitic anhydride.
A method for producing a polyamide resin composition, which comprises the steps of melting and kneading (A) a polyamide resin, (B) a phyllosilicate which has a carbon-carbon unsaturated group bonded thereto and in which the exchangeable metal ions existing in the interlayers have been previously ion-exchanged with organic onium ions, (C) an olefin compound having a carboxylic acid anhydride group in the molecule or a polymer of the olefin compound, wherein the olefin compound having a carboxylic acid anhydride group in the molecule (C) is at least one selected from maleic anhydride, itaconic anhydride, glutaconic anhydride, citraconic anhydride, and aconitic anhydride, and optionally (D) an inorganic filler, (E) an impact modifier, and (F) a flame retardant.
Dependencies are inferred from the claim text.