The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 19, 2014
Filed:
Sep. 16, 2009
Zhonglai Pan, Sichuan, CN;
Zhenghua Den, Sichuan, CN;
Rengui LI, Sichuan, CN;
LU Wang, Sichuan, CN;
Kai Wang, Sichuan, CN;
Jiamin Deng, Sichuan, CN;
Hongchang Du, Sichuan, CN;
Jiandong Gao, Sichuan, CN;
Jishuan Suo, Sichuan, CN;
Zhonglai Pan, Sichuan, CN;
Zhenghua Den, Sichuan, CN;
Rengui Li, Sichuan, CN;
Lu Wang, Sichuan, CN;
Kai Wang, Sichuan, CN;
Jiamin Deng, Sichuan, CN;
Hongchang Du, Sichuan, CN;
Jiandong Gao, Sichuan, CN;
Jishuan Suo, Sichuan, CN;
Changzhou Zhongke Laifang Power Development Co., Ltd., Ziangsu, CN;
Abstract
Microporous polyolefin membrane modified by aqueous polymer of the invention is obtained by the following steps: copolymerizing 100 parts of a water-soluble polymer, 30-500 parts of a hydrophobic monomer, 0-200 parts of a hydrophilic monomer and 1-5 parts of an initiator into polymeric colloid emulsion; adding 0-100% of an inorganic filler and 20-100% of a plasticizer based on 100% solid content of the polymeric colloid emulsion to obtain slurry; and coating the slurry on one or two surfaces of the surface modified microporous polyolefin membrane and then drying. The microporous polyolefin membrane modified by aqueous polymer has thermal shutdown effect and little thermal shrinkage, and improves the main problem of shrinkage of the microporous polyolefin membrane at high temperature.