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    POLYMERS DERIVED FROM OLEFINS USEFUL AS LUBRICANT AND FUEL OIL ADDITIVES, PROCESSES FOR PREPARATION OF SUCH POLYMERS AND ADDITIVES AND USE THEREOF
    5.
    发明专利
    POLYMERS DERIVED FROM OLEFINS USEFUL AS LUBRICANT AND FUEL OIL ADDITIVES, PROCESSES FOR PREPARATION OF SUCH POLYMERS AND ADDITIVES AND USE THEREOF 未知

    公开(公告)号：CA2257844C

    公开(公告)日：2005-11-29

    申请号：CA2257844

    申请日：1997-06-11

    Applicant: EXXON CHEMICAL PATENTS INC

    Inventor： GINDELBERGER DAVID EDWARD ,  ROSSI ALBERT ,  EMERT JACOB ISAAC ,  SHER JAIMES ,  STANAT JON EDMOND ,  STOKES JAMES PETER

    IPC: C08F8/00 ,  C08F10/00 ,  C10M143/00

    Abstract: Polymers (including copolymers) derived from one or more olefins, such including ethylene and C3-C20 .alpha.-olefins such as propylene and 1-butene, which polymers have (a) an average ethylene sequence length, ESL, of from about 1.0 to less than about 3.0; (b) an average of at least 5 branches per 100 carbon atoms of the polymer chains comprising the polymer; (c) at least about 50 % of said branches being methyl and/or ethyl branches; (d) at least about 30 % of said polymer chains terminated with a vinyl or vinylene group; (e) a number average molecular weight, Mn, or from about 300 to about 15,000 when the polymer is intended for dispersant or wax crystal modifier uses and up to about 500,000 where intended for viscosity modifier uses; and (f) substantial solubility in hydrocarbon and/or synthetic base oil. The polymers are produced using late-transition-metal catalyst systems and, preferably, inexpensive, highly dilute refinery or steam cracker feed streams that have undergone only limited clean-up steps. Fuel a nd lubricating oil additives, particularly dispersants, wax crystal modifiers and flow improvers, are produced. Where functionalization and derivatization of these polymers is required for such additives it is facilitated by the olefinic structures available in the polymer chains.

    LUBRICANT WITH A HIGHER MOLECULAR WEIGHT COPOLYMER LUBE OIL FLOW IMPROVER
    10.
    发明专利
    LUBRICANT WITH A HIGHER MOLECULAR WEIGHT COPOLYMER LUBE OIL FLOW IMPROVER 未知

    公开(公告)号：CA2275534A1

    公开(公告)日：1998-07-02

    申请号：CA2275534

    申请日：1997-10-10

    Applicant: EXXON CHEMICAL PATENTS INC

    Inventor： REDPATH JOHN VINCENT ,  MARTELLA DAVID JOHN ,  LAPINAS ARUNAS THOMAS ,  DAVIS WILLIAM MYERS ,  ROSSI ALBERT

    IPC: C10M101/00 ,  C10M145/14 ,  C10M157/00 ,  C10M169/04 ,  C10N20/04 ,  C10N30/02 ,  C10N40/04 ,  C10M145/16

    Abstract: A lubricant which comprises: a mineral oil basestock which has been dewaxed via catalytic cracking and/or catalytic isomerization; an alkylene-alkylene copolymer; and a lubricating oil flow improver formed from the reaction product of: (a) an unsaturated carboxy ester formed via the esterification of an unsaturated carboxylic acid or its corresponding anhydride with a monohydric aliphatic alcohol having an average carbon number of between about 10 to 18, the unsaturated carboxy ester having formula (I), wherein R' is selected from the group consisting of hydrogen and COOR and wherein R is a C6 to C22 alkyl group; and (b) a monomer selected from the group consisting of (i) a vinyl ester having formula (II), wherein R1 comprises an alkyl group containing from 1 to 18 carbon atoms; (ii) an olefin having formula (III), wherein R1 and R2 can independently be hydrogen, an alkyl having from 1 to 28 carbon atoms, or a substituted aryl group, provided that both R1 and R2 are not hydrogen, the reaction product having a specific viscosity in the range between about 0.3 to 1.5, or a weight average molecular weight of between about 50,000 to 350,000 Daltons.

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