Title:
METHOD FOR CONCENTRATING POLYISOPRENE LATEX
Document Type and Number:
WIPO Patent Application WO/2023/279774
Kind Code:
A1
Abstract:
The present invention relates to the technical field of chemical rubber, and particularly to a method for concentrating a polyisoprene latex. A creaming agent is added into and mixed with a thin polyisoprene latex, standing for layering is performed, and part of whey is removed, thereby obtaining a thick polyisoprene latex; the pH value of a thick polyisoprene latex system is regulated, and then an emulsifier is added to the thick polyisoprene latex for blending, thereby obtaining a concentrated polyisoprene latex. According to the present invention, the concentrated polyisoprene latex having a high solid content is obtained, and the stability of the concentrated polyisoprene latex is ensured. The solid content of the concentrated polyisoprene latex in the present invention is between 47% and 57%, the mechanical stability is greater than 1500 s, and the shelf life is longer than 6 months.
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Inventors:
CUI GUANGJUN (CN)
WANG JINCHANG (CN)
LI HUIYANG (CN)
ZHANG WENWEN (CN)
WANG BING (CN)
CHEN LEI (CN)
WANG JINCHANG (CN)
LI HUIYANG (CN)
ZHANG WENWEN (CN)
WANG BING (CN)
CHEN LEI (CN)
Application Number:
PCT/CN2022/082434
Publication Date:
January 12, 2023
Filing Date:
March 23, 2022
Export Citation:
Assignee:
ZIBO LUHUA HONGJIN NEW MAT CO LTD (CN)
International Classes:
C08C1/075; C08B11/20; C08C1/08; C08J3/02; C08K5/41; C08L9/10; C08L71/02
Foreign References:
CN113372468A | 2021-09-10 | |||
CN113024841A | 2021-06-25 | |||
CN1043945A | 1990-07-18 | |||
CN104844734A | 2015-08-19 | |||
CN113402636A | 2021-09-17 | |||
US20030050383A1 | 2003-03-13 | |||
CN111944075A | 2020-11-17 | |||
CN110862466A | 2020-03-06 |
Other References:
YU YUNYAO: "Creamer Concentrated Neoprene Latex", HECHENG XIANGJIAO GONGYE = CHINA SYNTHETIC RUBBER INDUSTRY, KAIFA ZHONGXIN, LANZHOU, CN, vol. 7, no. 2, 15 March 1984 (1984-03-15), CN , pages 152 - 155, XP093022136, ISSN: 1000-1255
Attorney, Agent or Firm:
ZIBO QIZHIDA INTELLECTUAL PROPERTY AGENCY (SPECIAL GENERAL PARTNERSHIP) (CN)
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