Title:
POLYMER HAVING DISPERSING FUNCTION, POLYCARBOXYLIC ACID CEMENT DISPERSANT, PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/078046
Kind Code:
A1
Abstract:
The present invention provides a polymer having a dispersing function, a preparation method therefor and use thereof as a cement dispersant. The polymer comprises a structural unit a, a structural unit b and a structural unit c; the structural unit a is provided by an unsaturated polyether, the structural unit b is provided by an unsaturated acid and/or a salt thereof and/or an anhydride thereof, and the structural unit c is provided by a silane and/or siloxane comprising a polymerizable group and having no less than five carbon atoms; the molar ratio of the structural unit a, the structural unit b and the structural unit c is 1: (1-20): (0.01-0.5); and the polymer has a weight average molecular weight of 20000-90000. Compared with the prior art, the polymer and the dispersant provided by the present invention can significantly reduce the retarding property of polycarboxylic acid, especially completely do not have the retarding property at a high temperature of higher than 120°C, while maintaining a higher dispersibility when a higher amount of acid is used. In addition, the dispersant provided by the present invention is compatible with other additional additives.
Inventors:
MIAO XIA (CN)
ZHOU SHIMING (CN)
WEI HAOGUANG (CN)
YANG GUANGGUO (CN)
WANG LISHUANG (CN)
WANG QICHUN (CN)
WANG MU (CN)
WANG XIAOJING (CN)
ZENG MIN (CN)
LIU JIAN (CN)
LI XIAOJIANG (CN)
WU XUEPENG (CN)
LIU HAOYA (CN)
ZHOU SHIMING (CN)
WEI HAOGUANG (CN)
YANG GUANGGUO (CN)
WANG LISHUANG (CN)
WANG QICHUN (CN)
WANG MU (CN)
WANG XIAOJING (CN)
ZENG MIN (CN)
LIU JIAN (CN)
LI XIAOJIANG (CN)
WU XUEPENG (CN)
LIU HAOYA (CN)
Application Number:
PCT/CN2021/112586
Publication Date:
April 21, 2022
Filing Date:
August 13, 2021
Export Citation:
Assignee:
CHINA PETROLEUM & CHEM CORP (CN)
SINOPEC RES INST PETROLEUM ENG (CN)
SINOPEC RES INST PETROLEUM ENG (CN)
International Classes:
C04B24/32; C08F2/38; C08F4/40; C08F220/06; C08F222/02; C08F230/08; C08F283/06; C04B103/40
Foreign References:
| CN108250370A | 2018-07-06 | |||
| CN111171245A | 2020-05-19 | |||
| CN109942757A | 2019-06-28 | |||
| CN103030334A | 2013-04-10 | |||
| JP2005272553A | 2005-10-06 | |||
| CN105754045A | 2016-07-13 | |||
| CN107245131A | 2017-10-13 | |||
| CN108250370A | 2018-07-06 |
Other References:
XIANGMING KONG ET AL., JOURNAL OF THE CHINESE CERAMIC SOCIETY, vol. 42, no. 5, May 2014 (2014-05-01)
See also references of EP 4212494A4
See also references of EP 4212494A4
Attorney, Agent or Firm:
RUNPING & PARTNERS (CN)
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