TY - JOUR
T1 - Preparation of an Electronic-Grade Cardol-Based Epoxy Reactive Diluent By Stepwise Dichlorination
AU - Lv, Wenxiao
AU - Chu, Liangyong
AU - Zhang, Fengyan
AU - Lu, Duyou
AU - Shen, Liming
AU - Bao, Ningzhong
N1 - Publisher Copyright:
© 2023 American Chemical Society.
PY - 2023/7/19
Y1 - 2023/7/19
N2 - In this paper, electronic-grade epoxidized Cardol (E-Cardol), a bifunctional reactive diluent for epoxy resin, was synthesized from Cardol and epichlorohydrin by a two-step reaction. FT-IR, NMR, and high-performance liquid chromatography have been used for structural characterization and reaction dynamic studies. A stepwise dichlorination process considering all sources of chloride has been proposed: (i) minimizing the etherification side reaction while accelerating the main reaction, (ii) driving the main etherification reaction forward in the closed-loop reaction, and (iii) applying a refining step based on the Williamson reaction. E-Cardol with a hydrolyzable chlorine content below 100 ppm and decreased viscosity (30%) was obtained. Copper corrosion experiments confirmed the enhanced anticorrosion properties of the electronic-grade E-Cardol coating. This constitutes the first report of an electronic-grade Cardol-based bifunctional reactive diluent. Our work may give a guide to the design of all of the electronic-grade bio-based reactive diluents and other epoxy resins.
AB - In this paper, electronic-grade epoxidized Cardol (E-Cardol), a bifunctional reactive diluent for epoxy resin, was synthesized from Cardol and epichlorohydrin by a two-step reaction. FT-IR, NMR, and high-performance liquid chromatography have been used for structural characterization and reaction dynamic studies. A stepwise dichlorination process considering all sources of chloride has been proposed: (i) minimizing the etherification side reaction while accelerating the main reaction, (ii) driving the main etherification reaction forward in the closed-loop reaction, and (iii) applying a refining step based on the Williamson reaction. E-Cardol with a hydrolyzable chlorine content below 100 ppm and decreased viscosity (30%) was obtained. Copper corrosion experiments confirmed the enhanced anticorrosion properties of the electronic-grade E-Cardol coating. This constitutes the first report of an electronic-grade Cardol-based bifunctional reactive diluent. Our work may give a guide to the design of all of the electronic-grade bio-based reactive diluents and other epoxy resins.
UR - http://www.scopus.com/inward/record.url?scp=85165635318&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.3c01380
DO - 10.1021/acs.iecr.3c01380
M3 - 文章
AN - SCOPUS:85165635318
SN - 0888-5885
VL - 62
SP - 10872
EP - 10882
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 28
ER -