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:
Mar. 07, 2023
Filed:
Apr. 19, 2019
Wanhua Chemical Group Co., Ltd., Shandong, CN;
Wanhua Chemical (Ningbo) Co., Ltd.;
Xiao Wang, Shandong, CN;
Xueshun Ji, Shandong, CN;
Weifei Li, Shandong, CN;
Rui Qu, Shandong, CN;
Chengbin Zhang, Shandong, CN;
Junying Deng, Shandong, CN;
Jiakuan Sun, Shandong, CN;
Bin Zhou, Shandong, CN;
Qiao Wang, Shandong, CN;
Ji Gong, Shandong, CN;
WANHUA CHEMICAL GROUP CO., LTD., Shandong, CN;
WANHUA CHEMICAL (NINGBO) CO., LTD., Zhejiang, CN;
Abstract
An ionic aqueous epoxy curing agent, a preparation method therefor and the use thereof. The aqueous epoxy curing agent is prepared by reacting the following raw materials in parts by weight: a) 1 part of a polyepoxy compound, b) 1.3-6 parts of a multifunctional compound, c) 0.2 to 1.25 parts of a monoepoxy compound, and d) 0.01 to 0.23 parts of a sultone, wherein the multifunctional compound has four or more active hydrogens. The curing agent obtained has a good hydrophilic effect and very good thinning performance, the paint film prepared by mixing same with an epoxy dispersion has the following advantages: excellent salt spray resistance and water resistance, strong adhesion, high hardness, etc.; in addition, the preparation process of the curing agent is simple, the conditions are mild, and room temperature curing is carried out.