中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

62 records (took 0.028 seconds)

    SALICYLIC ACID SALT AS LUBRICANT ADDITIVE FOR TWO CYCLE ENGINE
    3.
    发明专利
    SALICYLIC ACID SALT AS LUBRICANT ADDITIVE FOR TWO CYCLE ENGINE 失效

    公开(公告)号：JPH1088165A

    公开(公告)日：1998-04-07

    申请号：JP21753997

    申请日：1997-08-12

    Applicant: LUBRIZOL CORP

    Inventor： CLEVELAND WILLIAM K S ,  KARN JACK L ,  VARGO DANIEL M

    IPC: C10M129/54 ,  C10M129/76 ,  C10M133/16 ,  C10M167/00 ,  C10N30/04 ,  C10N40/26 ,  F02B75/02

    Abstract: PROBLEM TO BE SOLVED: To provide a method for lubricating two-stroke cycle engines by supplying a lubricant containing a hydroxyaromatic carboxyl compound without substantially containing a divalent metal to the engine. SOLUTION: This method for lubricating two-stroke cycle engines comprises supplying a mixture comprising (a) an oil of lubricating viscosity and (b) a hydrocarbyl-substituted hydroxyaromatic carboxylic acid or an ester, unsubstituted amide, hydrocarbyl-substituted amide, ammonium salt, hydrocarbylamine salt or monovalent metal salt thereof in an amount suitable to reduce piston deposites in the engine to the engine. The mixture supplied to the engine contains

    Diesel lubricants and methods
    7.
    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.

Patent Agency Ranking