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:
May. 28, 2019
Filed:
Jul. 20, 2015
Kunshan Tianyang Hot Melt Adhesive Co., Ltd., Jiangsu, CN;
Shanghai Tianyang Hot Melt Adhesive Co., Ltd., Shanghai, CN;
East China University of Science and Technology, Shanghai, CN;
Zhelong Li, Shanghai, CN;
Wanyu Zhu, Shanghai, CN;
Heji Lei, Shanghai, CN;
Fangqun Wu, Shanghai, CN;
Zuoxiang Zeng, Shanghai, CN;
KUNSHAN TIANYANG HOT MELT ADHESIVE CO., LTD, Jiangsu, CN;
SHANGHAI TIANYANG HOT MELT ADHESIVE CO., LTD, Shanghai, CN;
EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY, Shanghai, CN;
Abstract
A method for preparation of a high-viscosity polyester hot-melt adhesive with a partially sensitive viscosity-temperature property is disclosed, including the steps of: i) subjecting terephthalic acid, isophthalic acid, dodecanedioic acid, adipic acid, butanediol, dipropylene glycol and hexanediol to an esterification reaction in the presence of tetrabutyl titanate serving as a catalyst; and ii) adding an antioxidant to a product resulting from step i) to conduct a polycondensation reaction under a reduced pressure so as to obtain the high-viscosity polyester hot-melt adhesive which has a low melting point of 130° C.-135° C. and a partially sensitive viscosity-temperature property.