Patent ID: 9731440
Date: 2017-08-15
CPC Classifications: B29C,B29K,C08L,Y10T

Claim:
1. A molding material comprising the following components (A) to (D) at the following ratios, in which the component (D) is bonded to a composite comprising the components (A) to (C), the order in the weight average molecular weight is component (D) >component (B) >component (C), and, with regard to mixing ratio of component (B) and component (C), content of component (C) is 0.3 to 0.45 parts by weight per 100 parts by weight of component (B); (A) 1 to 75 wt % of a reinforcing fiber bundle, wherein the reinforcing fibers constituting the bundle are carbon fibers; (B) 0.01 to 10 wt % of a substantially unmodified first propylene-based resin containing 0 to less than 0.05 millimole equivalent in total per 1 gram of the resin of carboxylic acid groups and/or carboxylate groups; (C) 0.01 to 10 wt % of a second propylene-based resin having (i) carboxylate groups or (ii) carboxylic acid groups and carboxylate groups bound to the polymer chains thereof, where the total concentration of (i) or (ii) is 0.05 to 5 millimole equivalents per 1 gram of the resin, and the molar ratio of the amount of carboxylate groups to the total amount of the carboxylic acid groups and carboxylate groups is 85 to 100%; and (D) 5 to 98.98 wt % of a third propylene-based resin; wherein component (A) is arranged almost in parallel to the axial center direction of the molding material and the length of the reinforcing fibers constituting the component (A) is substantially the same as the length of the molding material; and wherein the molding material has a core-sheath structure in which component (D) covers the outer circumference of the composite comprising components (A) to (C).