Resin composition and a process for preparing same

A resin composition comprising:

• A. 1 to 98.9% by weight, based on the resin composition, of an aromatic copolyester comprising the reaction product in about equi-molar amounts of (1) terephthalic acid and isophthalic acid and/or the functional derivatives thereof, wherein the terephthalic acid unit/isophthalic acid unit molar ratio ranges from about 9:1 to about 1:9, and (2) a bisphenol of the following general formula ##STR9## wherein -X- represents a member selected from group consisting of -O-, -S-, -SO.sub.2 -, -SO-, -CO-, and alkylene and alkylidene groups containing 1 to 4 carbon atoms, and each of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.1 ', R.sub.2 ', R.sub.3 ' and R.sub.4 ' is selected from the group consisting of a hydrogen atom, a chlorine atom, a bromine atom and an alkyl group containing 1 to 4 carbon atoms, or a derivative thereof;
• B. 1 to 98.9% by weight, based on the resin composition, of a polyamide of the following general formula:
• ##STR10## wherein R.sub.5, R.sub.6 and R.sub.7 each represents an alkylene group containing 4 to 11 carbon atoms and n is an integer of from 30 to 500;
• and C. 0.1 to 98% by weight, based on the resin composition, of a polyalkylene phenylene ester or polyalkylene phenylene ester ether of the following formula:
• ##STR11## wherein R.sub.8, R.sub.9, R.sub.10 and R.sub.11 each represents a member selected from the group consisting of a hydrogen atom, a chlorine atom, a bromine atom and an alkyl group containing 1 to 4 carbon atoms, m is an integer of from 1 to 10, n is an integer of from 30 to 500. Y is an ester unit or an ether unit.