| 摘要 |
After-treatment agent contains a) cpd. A of formula: N circled positive R1R2R3R4 X circled negative where R1 = CH3, lower alkyl or 2-hydroxyalkyl; R2 = R1 or H, R3 = 18C alkyl or C17CONH-CH2CH2- or C17COOCH2CH2, R4 = R3 and X = inorganic anion and b) a cpd. B of formula : where R5 = 10-15C alkyl; n is 0 or 1; R6 = alkyl or 2-hydroxyalkyl; R7 = R6, and X is inorganic anion. - Pref. ratio of A to B is 100-1:1, pref.
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