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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
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.
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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
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公开(公告)号：DE2719978A1
公开(公告)日：1978-11-16
申请号：DE2719978
申请日：1977-05-04
Applicant: BASF AG
Inventor： OPPENLAENDER KNUT DIPL CHEM DR , FIKENTSCHER ROLF DIPL CHEM DR , BUETTNER EGON , SLOTMAN WILHELMUS , SCHWARTZ ERICH DIPL CHEM DR , MOHR RUDOLF DIPL CHEM DR
Abstract: Petroleum demulsifiers which contain, as the active ingredients, oxyalkylated isoalkylphenol-formaldehyde resins and oxyalkylated polyalkylenepolyamines.
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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
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