Study on a novel fluorescent anti-counterfeiting acrylate pressure-sensitive adhesive. Issue 9 (4th July 2022)

• Record Type: Journal Article
• Authors: Wang, Xia; Zhou, Zhaoxi; Yu, Xiaochen; Zhang, Kai; Chen, Qihui; Hong, Maochun; Fu, Heqing
• Is Part Of: Journal of adhesion. Volume 98:Issue 9(2022)
• Page Start: 1151
• Page End: 1167
• Publication Date: 2022-07-04
• Subjects: 7-hydroxycoumarin -- anti-counterfeit -- fluorescence -- acrylate -- pressure-sensitive adhesive; Adhesion -- Periodicals; 541.33
• DOI: 10.1080/00218464.2021.1882310
• Languages: English
• ISSNs: 0021-8464

Abstract

ABSTRACT: In this paper, a kind of fluorescent anti-counter feiting acrylate pressure-sensitive adhesive (PSA) label was prepared using 7-hydroxycoumarin and acrylate monomer. First, 7-hydroxycoumarin was reacted with 3-bromopropylene and coumarin derivatives were prepared. And thio-terminated intermediate-mercaptan A was obtained by the reaction of the mercaptan group of 2, 2ʹ-(Ethylenedioxy) diethanethiol with the double bond. Then, mercaptan A was reacted with acrylate and a novel fluorescent anti-counterfeiting acrylate PSA was prepared. Finally, a novel fluorescent anti-counterfeiting acrylate PSA label was prepared by coating the adhesive on the PET label. The experimental results showed that with the increasing of mercaptan A content, the tensile strength, shear resistance, thermal stability property and fluorescence of mercaptan A-acrylate PSA were improved. When the content of mercaptan A was 5 wt %, the tack, 180° peel strength and shear resistance of mercaptan A-acrylate PSA were No.5 ball, 0.54 KN/m and 87 h, respectively. The mercaptan A-acrylate PSA showed bright blue fluorescence under the ultraviolet lamp.