Patent ID: 8604249

Claim:
A novel phosphonium borate compound represented by Formula (I): (R 1 )(R 2 )(R 3 )PH.BAr 4 (I) wherein R 1 is a secondary alkyl group of 3 to 20 carbon atoms, a tertiary alkyl group of 4 to 20 carbon atoms, or a cycloalkyl group of 3 to 20 carbon atoms; R 2 is a hydrogen atom, a primary alkyl group of 1 to 20 carbon atoms, a secondary alkyl group of 3 to 20 carbon atoms, a tertiary alkyl group of 4 to 20 carbon atoms, a cycloalkyl group of 3 to 20 carbon atoms, an aralkyl group of 7 to 20 carbon atoms, or an allyl group of 3 to 20 carbon atoms; R 3 is a hydrogen atom, a primary alkyl group of 1 to 20 carbon atoms, a secondary alkyl group of 3 to 20 carbon atoms, a tertiary alkyl group of 4 to 20 carbon atoms, a cycloalkyl group of 3 to 20 carbon atoms, an aryl group of 6 to 30 carbon atoms, an aralkyl group of 7 to 20 carbon atoms, an alkenyl group of 2 to 20 carbon atoms, an alkynyl group of 2 to 20 carbon atoms, or an allyl group of 3 to 20 carbon atoms; R 1 , R 2 and R 3 may be the same or different from one another; Ar is an aryl group of 6 to 20 carbon atoms; R 1 , R 2 and R 3 cannot be tert-butyl groups simultaneously and Ar cannot be phenyl group at the same time; R 1 cannot be cyclohexyl group and Ar cannot be phenyl group at the same time; and R 1 and R 2 cannot be tert-butyl groups, R 3 cannot be o-ethylphenyl group or o-isopropylphenyl group and Ar cannot be phenyl group at the same time.