Conductive master batch

Abstract

A method for producing a conductive polyamide-polyphenylene ether resin composition comprising (A) 10 to 90 parts by mass of a polyphenylene ether resin, (B) 5 to 85 parts by mass of a polyamide having a (terminal amino group)/(terminal carboxyl group) ratio falling within the range from 0.20 to 4.0, (C) 5 to 85 parts by mass of a polyamide having a (terminal amino group)/(terminal carboxyl group) ratio falling within the range from 0.05 to 0.19 and (D) 0.1 to 10 parts by mass of a conductive filler, the method comprising the step of melt-kneading of the component (A), the component (B), a compatibilizer (F) and a master batch (E) obtained by melt-kneading of the component (D) and the component (C) in advance.

1 . A conductive master batch (E) obtained by melt-kneading of a polyamide (C) having a ratio of terminal amino groups to terminal carboxyl groups of 0.05 to 0.19 and a conductive filler (D). 
     
     
         2 . The conductive master batch (E) of  claim 1  obtained by melt-kneading of 5 to 85 parts by mass the component (C) and 0.1 to 10 parts by mass of the component (D). 
     
     
         3 . The conductive master batch (E) of  claim 1  used for a component of a conductive polyamide-polyphenylene ether resin composition comprising: 10 to 90 parts by mass of polyphenylene ether resin (A); 5 to 85 parts by mass of a polyamide (B) having a ratio of terminal amino groups to terminal carboxyl groups of 0.20 to 4.0; 5.1 to 95 parts by mass of the conductive master batch (E). 
     
     
         4 . The conductive master batch of  claim 1 , wherein a ratio of terminal amino groups to terminal carboxyl groups of the component (C) is 0.10 to 0.18. 
     
     
         5 . The conductive master batch of  claim 4 , wherein the ratio of terminal amino groups to terminal carboxyl groups of the component (C) is 0.12 to 0.17. 
     
     
         6 . The conductive master batch of  claim 2 , wherein a ratio of terminal amino groups to terminal carboxyl groups of the component (C) is 0.10 to 0.18. 
     
     
         7 . The conductive master batch of  claim 3 , wherein a ratio of terminal amino groups to terminal carboxyl groups of the component (C) is 0.10 to 0.18. 
     
     
         8 . The conductive master batch of  claim 6 , wherein the ratio of terminal amino groups to terminal carboxyl groups of the component (C) is 0.12 to 0.17. 
     
     
         9 . The conductive master batch of  claim 7 , wherein the ratio of terminal amino groups to terminal carboxyl groups of the component (C) is 0.12 to 0.17