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    93.
    发明专利
    未知

    公开(公告)号：MX19659A

    公开(公告)日：1993-06-01

    申请号：MX1965990

    申请日：1990-02-26

    Applicant: EXXON CHEMICAL PATENTS INC

    Inventor： ROSSI ALBERT

    IPC: C10M143/02 ,  C10M145/14 ,  C10M157/00 ,  C10N20/00 ,  C10N20/04 ,  C10N30/02 ,  C10N40/25 ,  C08F10/02

    Abstract: A lubricating oil composition comprising lubricating oil and (i) an amount effective to improve the low temperature flow properties of said lubricating oil composition of additive consisting essentially of at least one low molecular weight polymer or interpolymer of unsaturated carboxy ester represented by the formula wherein R min is selected from the group consisting of hydrogen and COOR, and R is a C14 alkyl group; and (ii) an amount effective to improve the viscosity index of said lubricating oil composition of additive comprising copolymer of ethylene and at least one other alpha-olefin monomer, said copolymer comprising intramolecularly heterogeneous copolymer chains containing at least one crystallizable segment of methylene units and at least one low crystallinity ethylene-alpha-olefin copolymer segment, wherein said at least one crystallizable segment comprises at least about 10 weight percent of said copolymer chain and contains an average ethylene content of at least about 57 weight percent, wherein said low crystallinity segment contains an average of not greater than about 53 weight percent ethylene, and wherein said copolymer has a molecular weight distribution characterized by at least one of a ratio of Mw/Mn of less than 2 and a ratio of Mz/Mw of less than 1.8, and wherein at least two portions of an individual intramolecularly heterogeneous chain, each portion comprising at least 5 weight percent of said chain, differ in composition from one another by at least 7 weight percent ethylene.

    94.
    发明专利
    未知

    公开(公告)号：MX19615A

    公开(公告)日：1993-06-01

    申请号：MX1961590

    申请日：1990-02-22

    Applicant: EXXON CHEMICAL PATENTS INC

    Inventor： ROSSI ALBERT

    IPC: C10M157/00 ,  C10N20/04 ,  C10N30/02 ,  C10N40/25 ,  C08F10/02

    Abstract: A lubricating oil composition exhibiting improved flow properties, specifically low temperature flow properties, and viscometric properties, particularly low temperature viscometric properties comprising lubricating oil and (i) an amount effective to improve the low temperature flow properties of said lubricating oil composition of additive consisting essentially of at least one low molecular weight non-ethylene containing polymer or interpolymer containing pendent ester groups comprising repeating methylene units derived from mixture of aliphatic alcohols, said mixture containing at least about 25 weight percent C14 alcohol; and (ii) an amount effective to improve the viscosity index of said lubricating oil composition of additive comprising copolymer of ethylene and at least one other alpha-olefin monomer, said copolymer comprising intramolecularly heterogeneous copolymer chains containing at least one crystallizable segment of methylene units and at least one low crystallinity ethylene-alphaolefin copolymer segment, wherein said at least one crystallizable segment comprises at least about 10 weight percent of said copolymer chain and contains an average ethylene content of at least about 57 weight percent, wherein said low crystallinity segment contains an average of not greater than about 53 weight percent ethylene, and wherein said copolymer has a molecular weight distribution characterized by at least one of a ratio of Mw/Mn of less than 2 and a ratio of Mz/Mw of less than 1.8, and wherein at least two portions of an individual intramolecularly heterogeneous chain, each portion comprising at least 5 weight percent of said chain, differ in composition from one another by at least 7 weight percent ethylene.

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