Lubricant oil composite

Lubricant oil composite

  • CN 102,161,927 B
  • Filed: 02/23/2011
  • Issued: 06/23/2017
  • Est. Priority Date: 02/23/2010
  • Status: Active Grant
First Claim
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1. comprising linear or star polymer the oil-soluble or oil dispersed for being derived from one or more polymerization of conjugate diene monomerProperty viscosity index improver (B) as the quality based on lubricant oil composite in lubricant oil composite be 0.01-20 mass %Minor amount additive component in the spark ignition of fuel or the lubrication of compression-ignition, internal combustion engine is made with bio-fuelPurposes, for reduce and/or suppress the lubricant oil composite the engine run during oxidation,Wherein described lubricant oil composite becomes to be polluted by bio-fuel or its catabolite between the engine runtime, andWherein described oil-soluble or oil-dispersing property viscosity index improver (B) are included:

  • (B (i)) linear diblock copolymer, the linear diblock copolymer is derived from least second of 85 mass % comprising at least oneThe block of alkenyl aromatic hydrocarbon monomer polymerization and at least one gathers from least one or more conjugate diene monomer of 85 mass %The block of conjunction, one or more conjugate diene monomer is selected from 1,3-butadiene, isoprene or their mixture, or(B (ii)) star polymer, it has the multiple arms extended from central core;

    The arm is derived from ethylene base aromatic hydrocarbon listBody and selected from 1,3-butadiene, isoprene or their mixture one or more conjugate diene monomer polymerization copolymerizationThing.

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