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:
Sep. 14, 2021
Filed:
Dec. 30, 2016
Wanhua Chemical Group Co., Ltd., Yantai, CN;
Wanhua Chemical (Guangdong) Co., Ltd., Zhuhai, CN;
Xueshun Ji, Shandong, CN;
Yunquan Jin, Shandong, CN;
Tianwen Zhou, Shandong, CN;
Weiguo Zhao, Shandong, CN;
Haimei Wang, Shandong, CN;
Yunling Liu, Shandong, CN;
Zhen Wang, Shandong, CN;
Bin Zhang, Shandong, CN;
Yuyang Cao, Shandong, CN;
Jiakuan Sun, Shandong, CN;
WANHUA CHEMICAL GROUP CO., LTD., Yantai, CN;
WANHUA CHEMICAL (GUANGDONG) CO., LTD., Zhuhai, CN;
Abstract
A self-crosslinkable polyurethane or polyurethane-urea aqueous dispersion, a preparation method therefor, and a use thereof. Side chains of the polyurethane or polyurethane-urea contain non-sterically-hindered siloxy groups. During the drying and activation of the aqueous dispersion, the siloxys in the side chains are hydrolyzed and crosslinked with each other to increase the cross-linking density, significantly improving the heat resistance, the humidity resistance, and other properties of an adhesive obtained therefrom. The aqueous dispersion itself has a good stability. In addition, an application system based thereon has an excellent stability and a long storage time. The aqueous dispersion is suitable for the preparation of high quality paints and sealants, especially adhesives.