| 摘要 |
PROBLEM TO BE SOLVED: To obtain a water-soluble working fluid compsn. for metal working which is excellent in resistance to leak and in easiness of separation of a contaminant oil and has properties not degraded for a long term by incorporating a polymer cationic compd. having a specified structure into the same. SOLUTION: The polymer cationic compd. ie represented by formula I [R<1> and R<2> are each 1-12C alkyl, 6-14C aryl, or 7-18C alkaryl; R<3> is CH2 CH2 N<+> (CH3 )3 Cl<-> ; and the ratio of a:b:c is (1:0.05:0.001)-(1:10:1)] and has a mol.wt. of 5,000-800,000. In addition to the cationic compd., this compsn. pref. contains an alicyclic amine (e.g. cyclohexylamine) and/or an arom. amine in a wt. ratio to the cationic compd. of (1:3)-(1:50), a 6-60C monocarboxylic acid and/or a 6-60C dicarboxylic acid, a basic substance (e.g. monoethanolamine), and a polyoxyalkylene glycol represented by formula II [PO is propyleneoxy; EO is ethyleneoxy; k to x are each 3-500; and the ratio of EO/PO is (5:95)-(95-5)]. |
