Patent ID: 9506169
Filing Date: 2016-11-29
CPC Classification: C08K,C09D,D01F,D04H,D06M,D10B,Y10T

Claim Text:
1. A carbon fiber bundle comprising a sizing agent adherent to a surface of the carbon fiber bundle, wherein the carbon fiber bundle comprises a plurality of carbon fibers, and the sizing agent comprises a copolyamide resin, the copolyamide resin containing a repeating unit (A) and at least one repeating unit selected from the group consisting of a repeating unit (B) and a repeating unit (C), and the copolyamide resin having a melting point of 180° C. or lower: wherein m is an integer of 6 to 20; and wherein a total concentration of the repeating unit (A) in the copolyamide resin is 30% by weight or more.