公开(公告)号：DE2709439A1

公开(公告)日：1978-09-07

申请号：DE2709439

申请日：1977-03-04

Applicant: BASF AG

Inventor： LIEBOLD GERT DIPL CHEM DR ,  BARTHOLD KLAUS DIPL CHEM DR

IPC: B60T11/26 ,  F16D66/00 ,  B60T11/00

Abstract: Any reduction of the boiling point of brake fluids for hydraulic brake systems is eliminated by bringing its water content into contact with a molecular sieve. The molecular sieves are pref. arranged as exchangeable cartridges in a brake fluid reservoir of the system. Arrangement eliminates possible brake failures if too low a boiling point and a high brake loading produce steam bubbles. No water-attracting additives are required.

公开(公告)号：DE2540173A1

公开(公告)日：1977-03-17

申请号：DE2540173

申请日：1975-09-10

Applicant: BASF AG

Inventor： LIEBOLD GERT DIPL CHEM DR ,  MOHR RUDOLF DIPL CHEM DR ,  OPPENLAENDER KNUT DIPL CHEM DR

IPC: C08G63/672 ,  C08G63/87 ,  C08G65/32

Abstract: Prepn. of esterified block polymers of ethylene oxide and 1,2-propyleneoxide comprises esterifying block polymers of formula A-B-A (I) (A=a polyethyleneoxide block, B a polypropylene oxide block) in the presence of acid catalysts, with dicarboxylic acid at high temperature. The block copolymers are esterified using 0.5-3 wt.% of (a) >=1 8-12C alkylbenzene sulphonic acid or (b) a 4-10C alkane or alkene carboxylic acid, without intermediate neutralisation. The block copolymers do not need to be neutralised before esterification and no salts are pptd. when the final ester is used to break up oil in water emulsions. The esters can be used to break up oil emulsions from various sources. In an example 1 mol of a block copolymer obtd. by alkaline oxyethylation of 1,2-propyleneoxide, was esterified, without neutralisation, at 150 degrees C with 0.5 mol adipic acid and in the presence of 0.18 Mol % p-n-dodecylbenzene sulphonic acid to give an ester. This is suitable for breaking up oil in H2O emulsions without pptd. of salts.

公开(公告)号：DE3132372A1

公开(公告)日：1983-03-03

申请号：DE3132372

申请日：1981-08-17

Applicant: BASF AG

Inventor： NOHE HEINZ DIPL CHEM DR ,  PACHALY HEINZ DIPL CHEM DR ,  LIEBOLD GERT DIPL CHEM DR ,  PFITZNER KLAUS DIPL CHEM DR

IPC: C07F5/04 ,  C10M105/78 ,  C10M3/48

公开(公告)号：DE2437920A1

公开(公告)日：1976-02-26

申请号：DE2437920

申请日：1974-08-07

Applicant: BASF AG

Inventor： MOHR RUDOLF DIPL CHEM DR ,  LIEBOLD GERT DIPL CHEM DR ,  OPPENLAENDER KNUT DIPL CHEM DR ,  BUETTNER EGON ,  SLOTMAN WILHELMUS

IPC: C10G33/04 ,  C23F11/10

公开(公告)号：DE3000687A1

公开(公告)日：1981-07-16

申请号：DE3000687

申请日：1980-01-10

Applicant: BASF AG

Inventor： BARTHOLD KLAUS DIPL CHEM DR ,  LIEBOLD GERT DIPL CHEM DR

IPC: C09K5/20 ,  C09K5/00

Abstract: Alkylene glycol-based coolants free of nitrites, amines, and phosphates are metal corrosion inhibited with at least one nucleus-substituted benzoic acid and at least one conventional corrosion inhibitor for metals.

公开(公告)号：DE2851057A1

公开(公告)日：1980-06-12

申请号：DE2851057

申请日：1978-11-25

Applicant: BASF AG

Inventor： LIEBOLD GERT DIPL CHEM DR ,  BARTHOLD KLAUS DIPL CHEM DR

IPC: C10M107/34 ,  C10M169/04 ,  C10M3/14 ,  C10M3/16 ,  C10M3/18

公开(公告)号：DE2435713A1

公开(公告)日：1976-02-05

申请号：DE2435713

申请日：1974-07-25

Applicant: BASF AG

Inventor： MOHR RUDOLF DIPL CHEM DR ,  FIKENTSCHER ROLF DIPL CHEM DR ,  LIEBOLD GERT DIPL CHEM DR ,  OPPENLAENDER KNUT DIPL CHEM DR ,  BUETTNER EGON ,  SLOTAMAN WILHELMUS

IPC: C10G33/04