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    22.
    发明专利
    未知

    公开(公告)号：FI915128A0

    公开(公告)日：1991-10-30

    申请号：FI915128

    申请日：1991-10-30

    Applicant: BASF AG

    Inventor： KONRAD GERD ,  WENDEROTH BERND ,  BARTHOLD KLAUS ,  SCHWARTZ ERICH ,  RAUBENHEIMER HANS-JUERGEN ,  HARTMANN HEINRICH

    IPC: C10L1/14 ,  C10L1/18 ,  C10L1/22 ,  C10L1/236 ,  C10L

    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).

    25.
    发明专利
    未知

    公开(公告)号：NO872140D0

    公开(公告)日：1987-05-21

    申请号：NO872140

    申请日：1987-05-21

    Applicant: BASF AG

    Inventor： BARTHOLD KLAUS ,  OPPENLAENDER KNUT ,  LASOWSKI JUERGEN ,  BAUR RICHARD

    IPC: B01D17/05 ,  C08G8/36 ,  C08G65/34 ,  C10G33/04 ,  C08G65/00 ,  C02F1/00

    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.

    27.
    发明专利
    未知

    公开(公告)号：NO852457L

    公开(公告)日：1985-12-20

    申请号：NO852457

    申请日：1985-06-18

    Applicant: BASF AG

    Inventor： MARTISCHIUS FRANZ-DIETER ,  KARAU DIETER ,  ARNOLD WERNER ,  BARTHOLD KLAUS

    IPC: C09K8/588 ,  E21B43/22 ,  E21B

    Abstract: The invention relates to a process for optimizing the properties of aqueous polymer solutions used for polymer flooding which comprises treating the polymer solutions under turbulent flow conditions in dynamic fluid dispersing or pumping equipment such that the residence time of the polymer solution in this equipment is less than approximately 20 seconds and the pump energy used is from about 1 to about 15 watts/liter of solution processed. This process permits the optimization of flow properties important in polymer flooding which results in the improved efficiency of the polymer flooding process.

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