公开(公告)号：BR9703756A

公开(公告)日：1998-11-10

申请号：BR9703756

申请日：1997-06-27

Applicant: BASF AG

Inventor： MESZAROS LADISLAUS ,  SCHIMPF KLAUS ,  PFITZNER KLAUS

IPC: C09K3/00 ,  C07D233/58 ,  C09K5/00 ,  C09K5/08 ,  C09K5/20 ,  C23F11/10 ,  C09K3/18 ,  C09K15/20

Abstract: An antifreeze concentrate based on alkylene glycols or their derivatives is free from silicate, borate and nitrate contains (a) 0.05-10 wt.% 3-16 C carboxylic acid(s) in the form of alkali metal or (substituted) ammonium salt(s) and (b) 0.01-3 wt.% hydrocarbotriazole(s) and/or hydrocarbothiazole(s), especially benzotriazole and/or tolutriazole. Also claimed is a ready-to-use aqueous antifreeze composition containing water and 10-90 wt.% of the concentrate.