VISCOSITY INDEX IMPROVER, METHOD FOR PRODUCING SAME, AND OIL COMPOSITION

Title:

VISCOSITY INDEX IMPROVER, METHOD FOR PRODUCING SAME, AND OIL COMPOSITION

Document Type and Number:

WIPO Patent Application WO/2014/142001

Kind Code:

A1

Abstract:

The present invention provides: a viscosity index improver having an excellent effect of improving a viscosity index and a high-temperature high-shear viscosity of an oil; and others. The viscosity index improver according to the present invention comprises a hydrogenation product of a copolymer which contains (a) a structural unit derived from an aromatic vinyl compound and (b) a structural unit derived from a conjugated diene, wherein (b1) a farnesene-derived structural unit is contained in an amount of 1 to 100 mass% and (b2) a structural unit derived from a conjugated diene other than farnesene is contained in an amount of 0 to 99 mass% both relative to the total amount of (b) the structural unit derived from a conjugated diene, and 50 mol% or more of carbon-carbon double bonds in (b) the structural unit derived from a conjugated diene are hydrogenated.

Inventors:

UEHARA YOSUKE (JP)
SASAKI HIROMITSU (JP)

Application Number:

PCT/JP2014/055800

Publication Date:

September 18, 2014

Filing Date:

March 06, 2014

Export Citation:

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Assignee:

KURARAY CO (JP)
AMYRIS INC (US)

International Classes:

C10M143/12; C10N30/02

Foreign References:

JPH11506391A	1999-06-08
JP2012092334A	2012-05-17
JP2009532513A	2009-09-10
JP2012502135A	2012-01-26
JP2777239B2	1998-07-16
JP2010090267A	2010-04-22
JP2009532513A	2009-09-10
JP2012502135A	2012-01-26
JP2012502136A	2012-01-26
JP2011132298A	2011-07-07

Other References: