公开(公告)号：GB2197365A

公开(公告)日：1988-05-18

申请号：GB8726081

申请日：1987-11-06

Applicant: HOECHST AG

Inventor： KEIL DR KARL-HEINZ ,  SCHNEIDER DR GERHART ,  TROST ALOYS

IPC: C09K8/584 ,  E21B43/22

Abstract: A surfactant mixture comprises (i) a carboxyalkyl ether of the formula R-O(CH2CH2O)x(CH2)n-COOM (R=C6-C20-alkyl, C8-C12-alkylphenyl, C4-C18-dialkylphenyl or C2-C8-trialkylphenyl; x=1 to 50 n=1 to 3 m=sodium, potassium, ammonium or mono-, di- or triethanolamine> and (ii) an anionic surfactant selected from the group comprising sulfonates. The mixture may be used in a process for increasing yield in oil recovery.

公开(公告)号：NO874616L

公开(公告)日：1988-05-09

申请号：NO874616

申请日：1987-11-05

Applicant: HOECHST AG

Inventor： KEIL KARL-HEINZ ,  SCHNEIDER GERHART ,  TROST ALOYS

IPC: C09K8/584 ,  E21B43/00

公开(公告)号：NO874616A

公开(公告)日：1988-05-09

申请号：NO874616

申请日：1987-11-05

Applicant: HOECHST AG

Inventor： KEIL KARL-HEINZ ,  SCHNEIDER GERHART ,  TROST ALOYS

IPC: C09K8/584 ,  E21B43/00

CPC classification number: C09K8/584

公开(公告)号：DE3638160A1

公开(公告)日：1988-05-11

申请号：DE3638160

申请日：1986-11-08

Applicant: HOECHST AG

Inventor： KEIL KARL-HEINZ DR ,  SCHNEIDER GERHART DR ,  TROST ALOYS

IPC: C09K8/584 ,  E21B43/22

公开(公告)号：NO874616D0

公开(公告)日：1987-11-05

申请号：NO874616

申请日：1987-11-05

Applicant: HOECHST AG

Inventor： KEIL KARL-HEINZ ,  SCHNEIDER GERHART ,  TROST ALOYS

IPC: C09K8/584 ,  E21B43/00

公开(公告)号：DE3407565A1

公开(公告)日：1985-09-05

申请号：DE3407565

申请日：1984-03-01

Applicant: HOECHST AG

Inventor： HEISS LORENZ DR ,  SCHNEIDER GERHART DR ,  TROST ALOYS

IPC: C07F9/38 ,  C07F9/40 ,  C09K8/584 ,  C09K23/00 ,  C09K23/14 ,  E21B43/22 ,  B01F17/14

Abstract: Alkyl- and alkylaryl-alkoxymethylene phosphonates of the formula in which R denotes C8-C20-alkyl, C8-C20-alkenyl or C4-C18-alkylaryl, R 1 and R2 can be identical or different and denote an alkali metal or ammonium ion, an ammonium ion of an organic amine or C1-C4-alkyl, R3 denotes ethylene, propylene or butylene and x denotes a number from 1 to 20, and a process for their preparation. These compounds are suitable as auxiliaries in petroleum production and increase the yield of crude oil.