公开(公告)号：NO892785D0

公开(公告)日：1989-07-05

申请号：NO892785

申请日：1989-07-05

Applicant: HOECHST AG

Inventor： MILLER DENNIS ,  SCHMIDT MANFRED ,  HALASZ SIGMAR-PETER VON ,  HOLST ARNO ,  PUSCH GUENTER ,  ROSENTHAL GERHARD

IPC: C09K8/584 ,  C09K8/588 ,  C09K23/02 ,  C09K23/12 ,  C09K23/42 ,  B01F17/00 ,  E21B43/00

Abstract: Aqueous surfactant compositions containing a surfactant mixture of a) 55 to 85% by weight of an alkanesulphonate, petroleumsulphonate, olefinsulphonate or alkylbenzenesulphonate having a mean molecular weight of 280-400 and b) 15 to 45% by weight of an ether sulphonate of the formula RO(AO)mA'SO3M where R is C6-C20-alkyl or a phenyl group which is substituted by one to three alkyl groups having a total of 6 to 20 carbon atoms, A is a C2H4 or C3H6 group or a mixture of the two groups, A' is -C2H4- or -C3H6-, m is a number of 3 to 25, and M is an alkali metal atom or ammonium. These surfactant mixtures are suitable for tertiary oil recovery in combination with specific salt-stable copolymers based on polyarylamide. They form stable solutions or dispersions with highly saline water.

公开(公告)号：NO874426L

公开(公告)日：1988-04-25

申请号：NO874426

申请日：1987-10-23

Applicant: HOECHST AG

Inventor： SCHMIDT MANFRED ,  RUPP WALTER ,  SCHNEIDER GERHART ,  KOHN EVA M

IPC: C07C309/04 ,  C07C309/09 ,  C09K8/584 ,  E21B43/22 ,  C07C ,  E21B43/00

Abstract: Styrylaryloxy ether sulfonates of the formula in which either R1 denotes styryl and simultaneously R2 and R3 are identical or different and denote hydrogen or styryl, or R1 and R2 are nonidentical and each denote methyl or styryl and simultaneously R3 denotes hydrogen or styryl, x denotes a number from 2 to 20, and M denotes an ammonium or alkali metal cation. These compounds are suitable as surfactant auxiliaries in oil recovery.

公开(公告)号：NO874426A

公开(公告)日：1988-04-25

申请号：NO874426

申请日：1987-10-23

Applicant: HOECHST AG

Inventor： SCHMIDT MANFRED ,  RUPP WALTER ,  SCHNEIDER GERHART ,  KOHN EVA M

IPC: C07C309/04 ,  C07C309/09 ,  C09K8/584 ,  E21B43/22 ,  C07C ,  E21B43/00

CPC classification number: C07C309/00 ,  C09K8/584

公开(公告)号：CA979359A

公开(公告)日：1975-12-09

申请号：CA139708

申请日：1972-04-14

Applicant: HOECHST AG

Inventor： DIERY HELMUT ,  SCHMIDT MANFRED ,  KLINNER WOLFGANG ,  POTSCHKA VOLKER

IPC: A01N25/04 ,  A01N25/30 ,  A01N53/02 ,  A01P13/00 ,  C09K23/00 ,  C09K23/08

Abstract: 1328933 Chlorinated paraffin sulphonic acids and salts FARBWERKE HOECHST AG 11 April 1972 [16 April 1971] 16602/72 Heading C2C [Also in Divisions A5 and C5] The calcium salt of chlorinated n-paraffin sulphonates is prepared by passing chlorine gas into a 60% aqueous paste of a sodium salt of a straight chain paraffin sulphonic acid having 13 to 18 C atoms in the alkyl chain, exposed to ultra-violet light produced by a mercury high vapor pressure immersion burner. 1À5 gram atoms of chlorine per mol of paraffin sulphonate is taken up during the reaction. The free chlorinated paraffin sulphonic acid is isolated and neutralized with calcium hydroxide. The corresponding magnesium and barium salts are obtained by neutralizing the free acid with magnesium and barium hydroxide respectively. The zinc salt is produced from the free acid by treatment with zinc carbonate and the aluminium salt by treatment with aluminium triisopropylate.