中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

51 records (took 0.021 seconds)

    3.
    发明专利
    未知

    公开(公告)号：DE69617761D1

    公开(公告)日：2002-01-24

    申请号：DE69617761

    申请日：1996-01-26

    Applicant: LUBRIZOL CORP

    Inventor： CARRICK VIRGINIA A ,  BARDASZ EWA A ,  RIPPLE DAVID E

    IPC: C10M163/00 ,  C10M167/00

    Abstract: A low sulfate ash lubricating oil composition comprising an oil of lubricating viscosity, 0.1 to 3.0 % of a calcium overbased acidic material, 0.1 to 2.0 % of a magnesium overbased acidic material, and at least 0.5% of a combination of an alkylene-coupled hindered phenol antioxidant and an antioxidant other than an alkylene-coupled hindered phenol antioxidant, is particularly useful for lubricating stationary gas engines.

    Diesel lubricants and methods
    6.
    发明专利
    Diesel lubricants and methods 未知

    公开(公告)号：AU5089493A

    公开(公告)日：1993-12-30

    申请号：AU5089493

    申请日：1993-05-04

    Applicant: LUBRIZOL CORP

    Inventor： RIPPLE DAVID E ,  KARN JACK L ,  VARGO DANIEL M

    IPC: C10M159/20 ,  C10M159/22 ,  C10M159/24 ,  C10M163/00 ,  F02B3/06 ,  C10M133/52

    Abstract: A diesel lubricant exhibiting improved ability to minimize undesirable viscosity increases when used in diesel engines is described. More particularly, in accordance with the present invention, a diesel lubricant is described which comprises a major amount of an oil of lubricating viscosity and a minor amount, sufficient to minimize undesirable viscosity increases of the lubricant when used in diesel engines, of a composition comprising (A) at least one carboxylic derivative composition produced by reacting at least one substituted succinic acylating agent with at least one amino compound containing at least one -NH- group wherein said acylating agent consists of substituent groups and succinic groups wherein the substituent groups are derived from polyalkene characterized by an Mn value of at least about 1200 and an Mw/Mn ratio of at least about 1.5, and wherein said acylating agents are characterized by the presence within their structure of an average of at least about 1.3 succinic groups for each equivalent weight of substituent groups, and (B) at least one basic alkali or alkaline earth metal salt of at least one acidic organic compound having a metal ratio of at least about 2. The composition should have a TBN in the range of about 6 to about 15, with the sucinnic acid derivative contributing about 0.5 to 1.5 TBN to the composition. The alkali or alkaline earth metal salts (detergents) should contribute the rest of the TBN of the composition. TBN is measured by the ASTM D2896 method. Magnesium should contribute less than about 30% of the total TBN of the composition. The invention also includes methods for operating diesel engines which comprises lubricating said engines during operation with the diesel lubricants of the invention.

    UNA COMPOSICION LUBRICANTE DIESEL.
    8.
    发明专利
    UNA COMPOSICION LUBRICANTE DIESEL. 未知

    公开(公告)号：ES2001974A6

    公开(公告)日：1988-07-01

    申请号：ES8601994

    申请日：1986-09-18

    Applicant: LUBRIZOL CORP

    Inventor： RIPPLE DAVID E ,  KARN JACK LEE ,  VARGO DANIEL M

    IPC: C10M159/24 ,  C10M163/00 ,  C10N10/02 ,  C10N20/04 ,  C10N30/04 ,  C10N40/25 ,  C10N60/00 ,  C10N60/10 ,  C10N60/12 ,  C10N60/14 ,  C10M111/04

    Abstract: COMPRENDE UNA CANTIDAD PRINCIPAL DE UN ACEITE DE VISCOSIDAD LUBRICANTE Y UNA CANTIDAD MINORITARIA DE UNA COMPOSICION CONSTITUIDA POR (A) POR LO MENOS UNA COMPOSICION DE UN DERIVADO DE AMIDA CARBOXILICA CON UN RESTO SUCCINICO SUSTITUIDO Y UN RESTO AMINO QUE CONTIENE POR LO MENOS UN GRUPO -NH-, SIENDO LOS SUSTITUYENTES DE LOS RESTOS SUCCINICOS GRUPOS POLIALQUILENO CON UN VALOR DE MN DE POR LO MENOS UNOS 1.200 Y UNA RAZON DE MP/MN DE POR LO MENOS 1,5, CON UN PROMEDIO DE POR LO MENOS UNOS 1,3 GRUPOS SUCCINICOS PARA CADA PESO EQUIVALENTE DE LOS GRUPOS SUSTITUYENTES, Y (B) POR LO MENOS UNA SAL DE METAL ALCALINO BASICA DE COMO MINIMO UN COMPUESTO ORGANICO ACIDO. UTIL PARA LUBRICAR MOTORES DIESEL DURANTE SU FUNCIONAMIENTO.

Patent Agency Ranking