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公开(公告)号：DE3537769A1
公开(公告)日：1987-04-30
申请号：DE3537769
申请日：1985-10-24
Applicant: BASF AG
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公开(公告)号：NO864235L
公开(公告)日：1987-04-27
申请号：NO864235
申请日：1986-10-23
Applicant: BASF AG
Inventor： ZARATE JACOBO , ELFERS GUENTHER , BETZ RAINER , RAUBENHEIMER HANS-JUERGEN , ZIEGLER WALTER
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公开(公告)号：AT14776T
公开(公告)日：1985-08-15
申请号：AT82109287
申请日：1982-10-07
Applicant: BASF AG
Inventor： DISTLER HARRY DR , WIDDER RUDI DR , BARTHOLD KLAUS DR , ELFERS GUENTHER
IPC: E21B43/25
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公开(公告)号：DE3143362A1
公开(公告)日：1983-05-11
申请号：DE3143362
申请日：1981-11-02
Applicant: BASF AG
Inventor： DISTLER HARRY DIPL CHEM DR , WIDDER RUDI DIPL CHEM DR , BARTHOLD KLAUS DIPL CHEM DR , ELFERS GUENTHER
Abstract: Use of compounds of the formula I in which R represents a C8- to C20-alkyl radical and R , R and R are identical or different and represent hydrogen or C1- to C4-alkyl as active substances against sulphate-reducing bacteria in process waters in the petrol industry.
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公开(公告)号：NO823504L
公开(公告)日：1983-04-25
申请号：NO823504
申请日：1982-10-21
Applicant: BASF AG
Inventor： DISTLER HARRY , WIDDER RUDI , BARTHOLD KLAUS , ELFERS GUENTHER
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Patent Agency Ranking
公开(公告)号：DK0444515T3
公开(公告)日：1997-12-29
申请号：DK91102446
申请日：1991-02-20
Applicant: BASF AG
Inventor： DIX JOHANNES PETER DR , OPPENLAENDER KNUT DR , FIKENTSCHER ROLF DR , SAGER WILFRIED DR , VOGEL HANS-HENNING DR , ELFERS GUENTHER
Abstract: The present invention relates to methods of demulsifying employing condensates as demulsifiers for oil-in-water emulsions and prepared from A) a precondensate from one or more trialkanolamines of the general formula I (I) in which R1 to R3 denote the same or different 1,2-alkylene groups of from 2 to 4 carbon atoms, and B) from 0.1 to 30% w/w, based on said precondensate, of one or more of the following compounds II: a) urea or a urea derivative of the general formula IIa (IIa) b) a urea derivative of the general formula IIb (IIb) c) a urethane of the general formula IIc (IIc) and/or d) a urethane of the general formula IId (IId) in which R1 is hydrogen, C1-C20-alkyl or C2-C20-alkenyl, R2 and R3 are the same or different and denote hydrogen or C1-C4-alkyl, R4 is C1-C4-alkyl and R5 is C1-C12-alkylene.
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公开(公告)号：NO300780B1
公开(公告)日：1997-07-21
申请号：NO920601
申请日：1992-02-14
Applicant: BASF AG
Inventor： KONRAD GERD , HARTMANN HEINRICH , ELFERS GUENTHER , RAUBENHEIMER HANS-JUERGEN , VOGEL HANS-HENNING
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公开(公告)号：NO924827L
公开(公告)日：1993-06-22
申请号：NO924827
申请日：1992-12-14
Applicant: BASF AG
Inventor： ELFERS GUENTHER , SAGER WILFRIED , VOGEL HANS-HENNING , OPPENLAENDER KNUT
Abstract: Petroleum de-emulsifier based on an alkoxylate having a polydispersity of at least 1.7, and a process for preparing the alkoxylates, using a metal alcoholate as catalyst.
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公开(公告)号：NO924294L
公开(公告)日：1993-05-10
申请号：NO924294
申请日：1992-11-06
Applicant: BASF AG
Inventor： ELFERS GUENTHER , SAGER WILFRIED , VOGEL HANS-HENNING , OPPENLAENDER KNUT
Abstract: Crude oil deemulsifiers based on alkoxylated polyethyleneimines are obtained by reacting polyethyleneimine having a molecular weight from 2500 to 35,000 with in each case 5 to 40 mol of propylene oxide and ethylene oxide per ethyleneimine unit in the polyethyleneimine and are used for deemulsifying crude oil emulsions at 10 DEG C to 130 DEG C.
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公开(公告)号：NO924827D0
公开(公告)日：1992-12-14
申请号：NO924827
申请日：1992-12-14
Applicant: BASF AG
Inventor： ELFERS GUENTHER , SAGER WILFRIED , VOGEL HANS-HENNING , OPPENLAENDER KNUT
Abstract: Petroleum de-emulsifier based on an alkoxylate having a polydispersity of at least 1.7, and a process for preparing the alkoxylates, using a metal alcoholate as catalyst.
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