| 摘要 |
PROBLEM TO BE SOLVED: To obtain a microbiocidal lubricant which does not rust iron parts around a conveyor, is excellent in wettability, cleanability, and microbiocidal capabiltiy, and gives pharmaceutical preparations with stable appearance by compounding an anionic surfactant with a quaternary ammonium salt. SOLUTION: A surfactant of formula I is compounded with a compd. of formula II or III, pref. in a wt. ratio of (30/70)-(80/20). In the formulas, R1 is 8-20C alkyl or alkenyl; A is 2-4C alkylene; n is 1-4; m is 1-2; M is an alkali or alkaline earth metal, ammonia, or amine; R2 to R8 are each 1-22C alkyl or alkenyl; k is 1-4; X<k-> is a k-valent org. carboxylic acid anion; and Ph is phenyl. An org. carboxylic acid having a mol.wt. of 60-600 is pref. as the org. carboxylic acid of X<k-> . |
