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公开(公告)号：DE4036225A1
公开(公告)日：1992-05-21
申请号：DE4036225
申请日：1990-11-14
Applicant: BASF AG
Inventor： KONRAD GERD DR , WENDEROTH BERND DR , BARTHOLD KLAUS DR , SCHWARTZ ERICH DR , RAUBENHEIMER HANS-JUERGEN , HARTMANN HEINRICH DR
Abstract: Petroleum distillates with improved properties contain minor amts. of a conventional ethylene-based flow improver (I) and a copolymer (II) comprising 10-95 mol.% of one or more 1-26C alkyl (meth)acrylates and 5-90 mol.% of one or more ethylenically unsatd. dicarboxylic acids or anhydrides, post-reacted with one or more primary or sec. amines to form the corresp. monoamide or amide/ammonium salt. (I):(II) wt. ratio is 40-95:60-5. - Pref. (I) is a copolymer of ethylene with vinyl acetate, vinyl propionate or ethylhexyl acrylate. (II) is a copolymer of 40-95% lauryl acrylate or 8-18C alkyl acrylate and 5-60% maleic anhydride, post-reacted with di(hydrogenated tallow) amine (DHTA), behenylamine or n-octadecylamine. (II) is opt. grafted onto (I). The distillates contain 50-5,000 ppm (I)+(II).
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公开(公告)号：DE3585175D1
公开(公告)日：1992-02-27
申请号：DE3585175
申请日：1985-06-13
Applicant: BASF AG
Inventor： MARTISCHIUS FRANZ-DIETER DIPL , KARAU DIETER DIPL ING , ARNOLD WERNER DIPL ING , BARTHOLD KLAUS DR
Abstract: The solns. are subjected to turbulent straaming conditions in a dynamic liq.-dispersing or feeding appts., residence time in the appts. being less than about 20 seconds and the pumping energy applied being 1-15 W per 1 soln. throughput. Appts. is single or multi-stage centrifugal or lateral channel pump. Soln. is subsequentlybseut subjected to additional shearing in a static mixer. SOln. or part thereof is recirculated and post-treated several times in a centrifugal or lateral channel pump. Soln. is of acrylamide-Na acrylate based copolymer, partic. of ave. mol. wt. 1x10 power 6-40x10 power 6, esp. 5x10 power 6-20x10 power 6, of or partially saponified polyacrylamide.
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Patent Agency Ranking
公开(公告)号：DE4025586A1
公开(公告)日：1992-02-13
申请号：DE4025586
申请日：1990-08-11
Applicant: BASF AG
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公开(公告)号：DE3941561A1
公开(公告)日：1991-06-20
申请号：DE3941561
申请日：1989-12-16
Applicant: BASF AG
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公开(公告)号：DE3617178A1
公开(公告)日：1987-11-26
申请号：DE3617178
申请日：1986-05-22
Applicant: BASF AG
Inventor： BARTHOLD KLAUS DR , OPPENLAENDER KNUT DR , LASOWSKI JUERGEN DR , BAUR RICHARD DR
Abstract: Polyethers with are suitable as oil demulsifiers are obtainable by reacting (A) a polyalkylene oxide obtained from ethylene oxide and propylene oxide and containing in total from 5 to 200 alkylene oxide units with (B) an alkylolation product of a low molecular weight aldehyde and a bis-(4-hydroxyphenyl)-methane of the general formula II wherein R1 and R2 may be identical or different and are each hydrogen, low molecular weight alkyl, phenyl, carboxyl or low molecular weight alkoxycarbonyl, the molar reaction ratio of the compound of the formula II to the alkylolating aldehyde being from 1:1 to 1:4, at from 100 DEG to 180 DEG C. in the presence of an acidic catalyst with removal of the water of reaction, the weight ratio of A to B being from 5:1 to 1:3.
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公开(公告)号：DE3172519D1
公开(公告)日：1985-11-07
申请号：DE3172519
申请日：1981-07-13
Applicant: BASF AG
Inventor： HANN ERNST WILHELM , SLOTMAN WILHELMUS C O BEHN , BUETTNER EGON , BARTHOLD KLAUS DR
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公开(公告)号：DE3237109A1
公开(公告)日：1984-04-12
申请号：DE3237109
申请日：1982-10-07
Applicant: BASF AG
Inventor： OPPENLAENDER KNUT DR , STORK KARL DR , BARTHOLD KLAUS DR
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