Abstract: A resin composition includes 90 to 50% by weight of (A) a polyamide having 7 or more average carbon atoms per amide functional group and containing no aromatic ring; 10 to 50% by weight of (B) a polyamide having an aromatic ring and being crystalline, based on 100% by weight of the total of the component (A) and the component (B); and 5 to 75 parts by weight of (C) a carbon fiber, based on 100 parts by weight of the polyamide including (A) and (B).

Abstract: A resin composition includes 90 to 50% by weight of (A) a polyamide having 7 or more average carbon atoms per amide functional group and containing no aromatic ring; 10 to 50% by weight of (B) a polyamide having an aromatic ring and being crystalline, based on 100% by weight of the total of the component (A) and the component (B); and 5 to 75 parts by weight of (C) a carbon fiber, based on 100 parts by weight of the polyamide including (A) and (B).

Abstract: The present invention concerns a thermoplastic polyester resin composition comprising a thermoplastic polyester and a metal alcoholate salt of an aromatic alcohol containing a hydroxy group directly attached to the aromatic ring as the essential ingredient, having a high crystallization rate, excellent moldability upon molding at low temperature, less molecular weight reduction during production and molding of the resin composition, and satisfactory melt degradation stability and hydrolysis resistance.

Abstract: Disclosed is a polyester composition comprising (a) 100 parts by weight of an aromatic polyester; (b) 0.005-10 parts by weight of an epoxy compound of the formula (I): ##STR1## (wherein Ar means C.sub.6 -C.sub.20 aromatic group or C.sub.6 l-C.sub.20 alicyclic group, n means an integer of 0-20); and (c) 1-70 parts by weight of at least one elastomer which has at least one functional group selected from the group consisting of epoxy groups, carboxyl group, carboxylate ester groups, carboxylic acid amide groups, acid anhydride group, imide groups, carboxylate salt groups, hydroxyl group, amino group and cyano group, the elastomer having a tensile modulus of 1-6,000 kg/cm.sup.2. The polyester resin composition of the present invention can easily be molded and the obtained molded article excells in mechanical properties such as impact strength.