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Patent Searching and Data


Title:
VISCOSITY INDEX IMPROVING AGENT AND LUBRICANT COMPOSITION
Document Type and Number:
Japanese Patent JP2008106191
Kind Code:
A
Abstract:

To provide a viscosity index improving agent good in compatibility with a GTL (gas to liquids) base oil and superior in viscosity index improving capability.

The viscosity index improving agent for GTL base oil comprises a copolymer (A) having a monomer (a) expressed by general formula (1), as an essential constituent monomer, and having a weight-average molecular weight of 5,000-1,000,000. In the formula, R1 is a hydrogen atom or a methyl group; R2 and R3 are each a 1-16C straight chain alkyl group or a 3-34C branched alkyl group; R2 and R3 may be mutually the same or different; the number of continuing methylene groups in the branched alkyl group is 16 or less; the total number of carbons of R2, R3 and p pieces of CH2 groups is 18-36; A is a 2-4C alkylene group; n is 0 or an integer of 1-20 and p is 0 or an integer of 1-15.


Inventors:
Yuki, Takeshi
Application Number:
JP2006000292257
Publication Date:
May 08, 2008
Filing Date:
October 27, 2006
Export Citation:
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Assignee:
SANYO CHEM IND LTD
International Classes:
C10M145/14; C09K3/00; C10M105/04; C10M137/02; C10M137/04; C10M137/08; C10M149/02; C10M149/04; C10M149/06; C10M149/08; C10M149/10; C10M169/04; C10N20/00; C10N20/02; C10N30/00; C10N30/02; C10N40/04; C10N40/08; C10N40/25