Patent ID: 7713341

Claim:
A quaternary ammonium salt composition comprising (a) a quaternary ammonium salt represented by the following general formula (1), (b) a tertiary amine represented by the following general formula (2), and (c) an organic acid ester represented by the following general formula (3), wherein a mass ratio of the component (a) to the component (b) [component (a)/component (b)] is from 100/0.01 to 100/7, and a mass ratio of the component (a) to the component (c) [component (a)/component (c)] is from 100/0.01 to 100/10, wherein R 1 is an alkyl or alkenyl group having 6 to 24 carbon atoms; R 2 is an alkyl, alkenyl or hydroxyalkyl group having 1 to 24 carbon atoms; R 3 is an alkyl or hydroxyalkyl group having 1 to 3 carbon atoms; R 4 is an alkylene group having 2 to 3 carbon atoms; n is an average molar number of addition of R 4 O groups ranging from 1 to 5; and A is a counter ion derived from an organic acid selected from the group consisting of sulfonic acid, a phosphate and a carboxylic acid; wherein R 1 , R 2 and R 3 have the same meanings as defined above; and A-(R 4 O) m H (3) wherein R 4 and A have the same meanings as defined above; and m is an average molar number of addition of R 4 O groups ranging from 1 to 5.