Patent ID: 9222202
Filing Date: 2015-12-29
Classification: B29C,B32B,C08J,D02G,D04H,D06M,D06N,Y10T

Abstract:
1. A carbon fiber bundle comprising carbon fibers and a copolymerized polyolefin attached to a surface of the carbon fibers, the copolymerized polyolefin containing an aromatic vinyl compound and an acid, an acid anhydride, or a combination thereof as copolymerization components, the copolymerized polyolefin being obtainable by a graft copolymerization of (i) a member selected from the group consisting of propylene-aromatic vinyl compound copolymers, propylene-α-olefin-aromatic vinyl compound copolymers, and a combination thereof, with (ii) a member selected from the group consisting of unsaturated dicarboxylic acids, acid anhydrides thereof, and a combination thereof, a copolymerization ratio between the olefin and the aromatic vinyl compound in the copolymerized polyolefin being such that a molar ratio of the aromatic vinyl compound is 0.1 to 5 per 100 of the olefin, an amount of the copolymerized polyolefin attached being 0.01 to 10 parts by mass per 100 parts by mass of the carbon fiber bundle.