Patent ID: 7378135

Claim:
A composition comprising a compound represented by Formula (1) and at least one of a compound represented by Formula (2) and a compound represented by Formula (3), with a proportion of the compound represented by Formula (1) being from 50 to 99% by weight, and a total proportion of the compound represented by Formula (2) and the compound represented by Formula (3) being from 1 to 50% by weight, based on a total amount of the compound represented by Formula (1), the compound represented by Formula (2) and the compound represented by Formula (3): wherein R is alkyl having from 1 to 4 carbon atoms; each of W 1 and W 2 is independently hydrogen, chlorine, fluorine or —CH 3 ; each of W 3 and W 4 is independently hydrogen, chlorine, fluorine, —CH 3 or —CF 3 ; W 5 is alkyl having from 1 to 10 carbon atoms, alkoxy having from 1 to 10 carbon atoms, chlorine, fluorine, —CN or —OCF 3 ; X is a single bond, —CH═CH— or —CH 2 CH 2 —; Z is a single bond, —COO—, —OCO— or —CH 2 CH 2 —; and q is an integer of from 1 to 20.