GRADIENT COPOLYMER, METHOD FOR PRODUCING SAME, AND USE THEREOF

Title:

GRADIENT COPOLYMER, METHOD FOR PRODUCING SAME, AND USE THEREOF

Document Type and Number:

WIPO Patent Application WO/2018/000804

Kind Code:

A1

Abstract:

Provided are a gradient copolymer, a method for producing the same, and use thereof. The gradient copolymer comprises n polymer components or consists of the n polymer components. Each of the n polymer components independently represents an addition polymer of a monomer represented by formula (I) and/or a mixture thereof; or each of the n polymer components independently comprises one or more structural units represented by formula (I-1) or basically consists of one or more structural units represented by formula (I-1). Symbol n represents an integer within a closed interval [5, ∞]. The average number of carbon atoms in a side chain of the ith polymer component by a nuclear magnetic resonance method is X i , the symbol i represents any integer from 1 to n; the relationship equation X1＜X2＜...＜Xn-1＜Xn satifies. The gradient copolymer is capable of exhibiting an excellent lubricating oil pour point depression efficiency or a wide base oil pour point depression adaptability. In the formula (I) or the formula (I-1), each of the groups and numerical values is defined as the same as the specification.

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Inventors:

ZHANG YAO (CN)
DUAN QINGHUA (CN)
WEI KECHENG (CN)
LIU YINONG (CN)
SUN HONGWEI (CN)

Application Number:

PCT/CN2017/000409

Publication Date:

January 04, 2018

Filing Date:

June 27, 2017

Export Citation:

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Assignee:

CHINA PETROLEUM & CHEM CORP (CN)
SINOPEC RES INST PETROLEUM (CN)

International Classes:

C08F220/18; C08F220/14; C10M145/14; C10N30/02

Domestic Patent References:

WO2001040333A1

2001-06-07

Foreign References:

CN1193024A	1998-09-16
CN105524209A	2016-04-27
CN105585657A	2016-05-18

Other References: