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    31.
    发明专利
    未知

    公开(公告)号：FI961470A

    公开(公告)日：1996-04-01

    申请号：FI961470

    申请日：1996-04-01

    Applicant: BASF AG

    Inventor： MUELLER HANS-JOACHIM ,  WENDEROTH BERND ,  BERGER ALBIN ,  LITTMANN DIETER ,  KLIMESCH ROGER ,  OPPENLAENDER KNUT ,  MARCZINKE BERND LOTHAR ,  RUEHL THOMAS ,  HEIDER MARC

    IPC: C08F10/00 ,  C08F210/02 ,  C10L1/22 ,  C10L1/236 ,  C10L10/14 ,  C08F

    Abstract: PCT No. PCT/EP94/03179 Sec. 371 Date Apr. 2, 1996 Sec. 102(e) Date Apr. 2, 1996 PCT Filed Sep. 23, 1994 PCT Pub. No. WO95/09877 PCT Pub. Date Apr. 13, 1995An ethylene-based copolymer which is suitable as a flow improver for mineral oil middle distillates and is composed of a) from 50 to 94% by weight of ethylene; b) from 3 to 30% by weight of one or more vinyl esters of C2-C6-monocarboxylic acids; c) from 3 to 20% by weight of one or more aminoalkyl acrylates of the formula I (I) which R1 is hydrogen or methyl, R2 and R3 are identical or different and are each hydrogen or C1-C6-alkyl and A1 is straight-chain or branched C2-C10-alkylene; and d) from 0 to 10% by weight of one or more monomers which are copolymerizable with the monomers a) to c), wherein copolymers containing vinyl acetate as monomer b) and having a number average molecular weight of from 5,000 to 50,000 are excluded from the scope of the copolymer.

    ETHYLENE-BASED COPOLYMERS AND THEIR USE AS VISCOSITY IMPROVERS IN PETROLEUM DISTILLATES
    32.
    发明专利
    ETHYLENE-BASED COPOLYMERS AND THEIR USE AS VISCOSITY IMPROVERS IN PETROLEUM DISTILLATES 未知

    公开(公告)号：CA2170744A1

    公开(公告)日：1995-04-13

    申请号：CA2170744

    申请日：1994-09-23

    Applicant: BASF AG

    Inventor： MUELLER HANS-JOACHIM ,  WENDEROTH BERND ,  BERGER ALBIN ,  LITTMANN DIETER ,  KLIMESCH ROGER ,  OPPENLANDER KNUT ,  MARCZINKE BERND LOTHAR ,  RUEHL THOMAS ,  HEIDER MARC

    IPC: C08F10/00 ,  C08F210/02 ,  C10L1/22 ,  C10L1/236 ,  C10L10/14 ,  C10L1/14

    Abstract: Ethylene-based copolymers suitable as viscosity improvers for petroleum distillates of a) 50 to 94 wt. % ethylene; b) 3 to 30 wt. % one or more vinyl esters of C2-C6 monocarboxylic acids; c) 3 to 20 wt. % one or more aminoalkylene acrylates of general formula (I) in which R1 is hydrogen or methyl, the radicals R2 and R3 may be the same or different and stand for hydrogen or a C1-C6 alkyl radical and A1 is a straight-chained or branched C2C10 alkylene radical; and d) 0 to 10 wt. % one or more monomers which can be copolymerised with monomers a) to c), in which such copolymers are excluded in which monomer b) is vinyl acetate and have a number average molecular weight of 5000 to 50000; or of a') 50 to 95.5 wt. % ethylene; b') 4 to 30 wt. % one or more vinyl esters of C2-C6 monocarboxylic acids; c') 0.5 to 20 wt. % one or more vinyl imidazoles of general formula (II) in which the radicals R4, R5 and R6 may be the same or different and are hydrogen or a C1-C6 alkyl radical, or 0.5 to 20 wt. % one or more aminoalkyl vinyl ethers of general formula (III) in which the substituents are: R7, R8: C1-C6 alkyl; R9, R10, R11: hydrogen or C1-C6 alkyl; A2: C2-C6 alkylene; and d') 0 to 10 wt. % one or more monomers which can be copolymerised with monomers a') to c'). The invention also relates to the use of these copolymers as viscosity improvers for petroleum middle distillates and to pretroleum distillates containing them.

    PUMP FOR TRANSPORTING A HEAT EXCHANGE MEDIUM FOR A MULTI-TUBE REACTOR
    34.
    发明专利
    PUMP FOR TRANSPORTING A HEAT EXCHANGE MEDIUM FOR A MULTI-TUBE REACTOR 未知

    公开(公告)号：CA2448082A1

    公开(公告)日：2002-12-12

    申请号：CA2448082

    申请日：2002-06-05

    Applicant: BASF AG

    Inventor： OLBERT GERHARD ,  KUMMER MATTHIAS ,  RUEHL THOMAS ,  MATTKE TORSTEN ,  ROSOWSKI FRANK

    IPC: F04D7/06 ,  F04D3/00 ,  F04D13/00 ,  F04D29/40 ,  F04D29/52

    Abstract: The invention relates to a pump (1) comprising a pump feed tube (13) for transporting a heat exchange medium (6) for a reactor containing a bundle of catalyst tubes (2). The pump (1) has a housing (14) that surrounds the pump feed tube (13) and comprises an opening (15) in the lower part of the housin g (14), which allows the heat exchange medium (6) that is drawn from the lower section of the reactor by the pump (1) to flow into the housing (14). The medium flows upwards in the section lying between the internal wall of the housing (14) and the external wall of the pump feed tube (13), optionally ov er a heat exchanger (18) and into the interior of the pump feed tube (13) via a n opening (16) in the upper section of said pump feed tube (13). The medium th en flows through the pump feed tube from top to bottom, into the reactor via an opening (17) in the lower section of said tube (13) and into the upper secti on of the intermediate chamber between the catalyst tubes (2).

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