Patent ID: 6846433

Claim:
A liquid crystalline polyester resin composition comprising 100 parts by weight of a liquid crystalline polyester forming an anisotropic melt phase, and not less than 0.01 part by weight and less than 0.2 part by weight of at least one of phosphite compounds defined by the following formula (I): (wherein each of R 1 , R 2 , R 4 and R 5 represents independently a hydrogen atom, an alkyl group having 1 to 8 carbon(s), a cycloalkyl group having 5 to 8 carbons, an alkylcycloalkyl group having 6 to 12 carbons, an aralkyl group having 7 to 12 carbons or a phenyl group, R 3 represents a hydrogen atom or an alkyl group having 1 to 8 carbon(s), X represents a direct bond, a sulfur atom or a bivalent group defined by the general formula (I-1) (wherein, R 6 represents a hydrogen atom, an alkyl group having 1 to 8 carbon(s) or a cycloalkyl group having 5 to 8 carbons), A represents an alkylene group having 2 to 8 carbons or a bivalent group defined by the general formula (I-2) (wherein, R 7 represents a direct bond or an alkylene group having 1 to 8 carbon(s), * represents that this group is bonded with the oxygen atom on this side), either one of Y and Z represents a hydroxyl group, an alkyl group having 1 to 8 carbon(s), an alkoxyl group having 1 to 8 carbon(s) or an aralkyloxy group having 7 to 12 carbons, and the other one of Y and Z represents a hydrogen atom or an alkyl group having 1 to 8 carbon(s)).