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Viscosity modifier for lubricating oils, additive composition for lubricating oils, and lubricating oil composition

A technology of lubricating oil composition and viscosity regulator, applied in lubricating compositions, additives, petroleum industry, etc., to achieve the effect of excellent fluidity

Active Publication Date: 2016-11-09
MITSUI CHEM INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the improvement of fuel efficiency is also required under the condition that the internal temperature of the engine is high, and the viscosity of the base oil is also reduced by reducing the viscosity of the base oil. However, from the viewpoint of preventing wear, it is estimated that there is a limit to the reduction of the viscosity.

Method used

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  • Viscosity modifier for lubricating oils, additive composition for lubricating oils, and lubricating oil composition
  • Viscosity modifier for lubricating oils, additive composition for lubricating oils, and lubricating oil composition
  • Viscosity modifier for lubricating oils, additive composition for lubricating oils, and lubricating oil composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0300] To a supply port of a pressurized continuous polymerization reactor with a stirring blade of a volume of 2 L fully replaced by nitrogen, continuously supply 12.5 mmol / h A hexane solution of methylaluminoxane (MMAO-3A of TOSOH FINECHEM CORPORATION) prepared at a concentration of L, di-p-tolylmethylene (cyclopentadienyl) (octamethyl) prepared at a concentration of 0.025 mmol / L A hexane solution of zirconium dichloride (octahydrodibenzofluorenyl) zirconium dichloride, and a hexane solution of triisobutylaluminum (TiBA from TOSOH FINECHEM CORPORATION) prepared at a concentration of 20.0 mmol / L. Simultaneously, to another supply port of the continuous polymerization reactor, ethylene was continuously supplied at a flow rate of 137.5 g / hour, 1-butene was continuously supplied at a flow rate of 1380 g / hour, and hydrogen was continuously supplied at a flow rate of 0.15 NL / hour. Continuously supply dehydrated and purified n-hexane from the two supply ports and the uppermost port...

Embodiment 2

[0303] To a supply port of a pressurized continuous polymerization reactor with a stirring blade of a volume of 2 L fully replaced by nitrogen, continuously supply 12.5 mmol / h A hexane solution of methylaluminoxane (MMAO-3A of TOSOH FINECHEM CORPORATION) prepared by mixing at a concentration of L, and di-p-tolylmethylene (cyclopentadienyl) prepared by mixing at a concentration of 0.025mmol / L ( A hexane solution of octamethyloctahydrodibenzofluorenyl)zirconium dichloride and a hexane solution of triisobutylaluminum (TiBA from TOSOH FINECHEMCORPORATION) prepared by mixing at a concentration of 20.0 mmol / L were mixed. Simultaneously, to another supply port of the continuous polymerization reactor, ethylene was continuously supplied at a flow rate of 137.5 g / hour, 1-butene was continuously supplied at a flow rate of 1380 g / hour, and hydrogen was continuously supplied at a flow rate of 0.15 NL / hour. Continuously supply dehydrated and purified n-hexane from the two supply ports and ...

Embodiment 3

[0306]To one supply port of a pressurized continuous polymerization reactor with a stirring blade of a volume of 2 L fully replaced with nitrogen, respectively, the mixed prepared methyl aluminum at a concentration of 12.5 mmol / L was continuously supplied at a flow rate of 0.020 L / hour oxane (MMAO-3A of TOSOH FINECHEM CORPORATION), 0.025mmol / L concentration of di-p-tolyl methylene (cyclopentadienyl) (octamethyloctahydrodibenzofluorenyl) zirconium dichloride For the hexane solution, a hexane solution of triisobutylaluminum (TiBA from TOSOH FINECHEM CORPORATION) prepared at a concentration of 20.0 mmol / L was continuously supplied at a flow rate of 0.045 L / hour. Simultaneously, to another supply port of the continuous polymerization reactor, ethylene was continuously supplied at a flow rate of 125 g / hour, 1-butene was continuously supplied at a flow rate of 1200 g / hour, and hydrogen was continuously supplied at a flow rate of 1.0 NL / hour. Continuously supply dehydrated and purifi...

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Abstract

Provided are a viscosity modifier for lubricating oils for obtaining an additive composition for lubricating oils having excellent fluidity in a wide temperature range from low temperature to high temperature; and said additive composition for lubricating oils. Further provided are a viscosity modifier for lubricating oils for obtaining a lubricating oil composition capable of reducing viscosity in good balance in a wide temperature range from low temperature to high temperature; and said lubricating oil composition. The viscosity modifier for lubricating oils includes an ethylene alpha-olefin copolymer (A) which includes 30 to 50 mole% of structural units derived from at least one alpha-olefin selected from alpha-olefins having 4 and 5 carbon atoms and 50 to 70 mole% of structural units derived from ethylene (with the proviso that the total of all structural units of said copolymer is 100 mole%) and which satisfies specific requirements (a), (b), and (c).

Description

[0001] This application claims the benefit of priority to US Provisional Patent Application No. 61 / 971,980, filed March 28, 2014, which is incorporated herein by reference in its entirety. technical field [0002] The present invention relates to a viscosity modifier for lubricating oil, an additive composition for lubricating oil, and a lubricating oil composition. Background technique [0003] Petroleum products have a so-called temperature dependence of viscosity, ie exhibit large viscosity changes with temperature changes. For example, for lubricating oil compositions used in automobiles and the like, it is preferable that the temperature dependence of the viscosity is small. Therefore, in order to reduce the temperature dependence of viscosity, a certain polymer soluble in a lubricating oil base is used in lubricating oil as a viscosity modifier. [0004] Ethylene·α-olefin copolymers are widely used as such viscosity modifiers for lubricating oils, and various improvem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F210/16C08F210/08C08F210/06C10M143/06C10N30/02
CPCC08F210/16C10M143/06C10M2205/026C10M2205/022C10N2030/02C08F210/08C08F2500/03C08F2500/17C08F2500/08C08F210/06C10M143/08C10M2203/1025C10M2205/0285C10M2207/026C10M2209/084C10M2215/064C10M2223/045C10N2020/04C10N2010/02C10N2020/017C10N2010/04C10N2020/02C10N2030/54C10N2030/68C10N2040/25C10M2205/028C10M107/02C10M2205/024C10M145/14
Inventor 山本渥史铃木照文井手健太C·黄
Owner MITSUI CHEM INC
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