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The preparation and characterization of urushiol powders (YPUOH) based on urushiol

Progress in Organic Coatings, 2013
Abstract Urushiol and lacquer sap from lacquer tree exhibit good antimicrobial and antioxidant properties. However, they are limited to commercial application due to their high volatility, low drying rate and allergic reaction. To overcome these limitations, solid-type urushiols (YPUOH), which is one of the essential factors for convenient handling ...
Dowan Kim, Sung Lan Jeon, Jongchul Seo
exaly   +2 more sources

Biobased Polymer Coating Using Catechol Derivative Urushiol

open access: yesLangmuir, 2016
We have investigated the mechanism of the superior mechanical robustness of coated thin films of the catechol derivative urushiol. We synthesized hydrogenated urushiol (h-urushiol) by hydrogenating the double bonds in the long alkyl side chain of urushiol, and the physical properties of thin films of mixtures of urushiol and h-urushiol were evaluated ...
Hirohmi, Watanabe   +4 more
openaire   +3 more sources

Natural urushiol as a novel under-water adhesive

Chemical Engineering Journal, 2021
Abstract The curing and adhesion of natural urushiol, a catechol derivative, in water were studied; this work was inspired by the adhesive role of the catechol functional group, found in blue mussels, in water. We confirmed the curing reaction of urushiol in water in the presence of Fe3+ and showed the possibility of utilizing this material as an ...
Jongok Won
exaly   +2 more sources

UV-induced polymerization of urushiol. II: Effects of hydrogenation degree of urushiol on surface morphology

Progress in Organic Coatings, 2010
Abstract There are a large number of lacquer-coated, excavated cultural treasures in China, e.g. Qin Terracotta Army. The lacquer film is formed via the laccase-catalyzed polymerization and a coupling reaction on the long aliphatic unsaturated side chain, which requires a long drying period and specific conditions.
Jianrong Xia, Yanlian Xu, Jinhuo Lin
exaly   +2 more sources

Urushiol/polyurethane–urea dispersions and their film properties

Progress in Organic Coatings, 2009
Abstract A series of aqueous polyurethane–urea (PUU) dispersions having urushiol were synthesized by in situ step polymerization of isophorone diisocyanate (IPDI), poly(ethylene glycol) (PEG, M n  = 1000 g/mol), urushiol, dimethylol propionic acid (DMPA), and ethylene diamine (EDA).
Sung Wook Choi, In Woo Cheong
exaly   +2 more sources

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