1.
    发明专利
    未知

    公开(公告)号:DE3871274D1

    公开(公告)日:1992-06-25

    申请号:DE3871274

    申请日:1988-07-23

    Applicant: BASF AG

    Abstract: Fuel for spark-ignition engines contains small amts. of alkali(ne earth) metal salts of monoamides of dicarboxylic acids of formula R1R2N-C(O)-A-COOH (I) or of salts of amides of tri- or tetracarboxylic acids, in which the amide gp. has formula R1R2N-C(O)- (II) (R1, R2 are (un)substd. 5-75C hydrocarbyl, possibly with 1 olefinic double bond, or R1 is H and R2 is R3R4N-(CnH2nO)y-1-CnH2n-NH- (n is 3 and/or 4, y is 5-100, R3, R4 are 1-18C (pref. 4-13C) (un)substd. hydrocarbyl), -A- is -CH:CH- or -(CH2)x-, with x is 2-4).

    Fuels for spark-ignition engines
    3.
    发明专利

    公开(公告)号:DE3801107A1

    公开(公告)日:1989-07-27

    申请号:DE3801107

    申请日:1988-01-16

    Applicant: BASF AG

    Abstract: The invention relates to fuels for spark-ignition engines, containing small quantities of alkali metal salts or alkaline earth metal salts of amides of tri- or tetra-carboxylic acids, the general formula applying to the amide groups, in which R and R are identical or different unsubstituted or substituted hydrocarbon radicals, which may be olefinically monounsaturated and have 5 to 75 carbon atoms, or R is H and R is with n = 3 and/or 4 and y = 5 to 100, wherein R and R are identical or different, unsubstituted or substituted hydrocarbon radicals having 1 to 18, preferably 4 to 13, carbon atoms.

    4.
    发明专利
    未知

    公开(公告)号:ES2043940T3

    公开(公告)日:1994-01-01

    申请号:ES89108374

    申请日:1989-05-10

    Applicant: BASF AG

    Abstract: The invention relates to fuels for spark-ignition engines, containing small quantities of copolymers of alkyl (meth)acrylates having 8 to 40 C atoms in the alkyl radical and/or vinyl esters of carboxylic acids containing 8 to 40 C atoms and monoethylenically unsaturated mono- and/or di-carboxylic acids having 3 to 12 C atoms and/or monoethylenically unsturated compounds with sulphonic and/or phosphonic acid groups, having a total molecular mass from 500 to 20,000 g per mole, the carboxyl groups, sulphonic acid groups and phosphonic acid groups of the copolymers having been wholly or partially reacted with alkali or an alkaline earth to form the alkali metal salts or alkaline earth metal salts and the remainder of the acid groups having been reacted with ammonia and/or amines having up to 50 C atoms to give the corresponding amide groups and/or ammonium salts.

    6.
    发明专利
    未知

    公开(公告)号:DE3422612A1

    公开(公告)日:1985-12-19

    申请号:DE3422612

    申请日:1984-06-19

    Applicant: BASF AG

    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.

    Fuels for spark-ignition engines
    10.
    发明专利

    公开(公告)号:DE3733172A1

    公开(公告)日:1989-04-20

    申请号:DE3733172

    申请日:1987-10-01

    Applicant: BASF AG

    Abstract: The invention relates to fuels for spark-ignition engines, which contain small quantities of copolymers of vinyl alkyl ethers having 1 to 30 carbon atoms in the alkyl group and/or cycloalkyl vinyl ethers having 3 to 10 carbon atoms in the alkyl group with maleic anhydride, and/or copolymers of alkyl vinyl ethers having 1 to 30 carbon atoms in the alkyl group and/or cycloalkyl vinyl ethers having 3 to 10 carbon atoms in the alkyl group and olefins having 2 to 40 carbon atoms and/or cycloolefins having 3 to 10 carbon atoms with maleic anhydride, having an overall molecular mass of from 500 to 20,000 g per mol, some or all of the carboxyl groups in the copolymers being reacted with alkali metal or alkaline earth metal to form the alkali metal or alkaline earth metal salts, and the remainder of the carboxyl groups being reacted with alcohols and/or amines having up to 50 carbon atoms, to give the corresponding ester and/or amide groups and/or ammonium salts.

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