Artificial urushi.
A new concept for the design and laccase-catalyzed preparation of "artificial urushi" from new urushiol analogues is described. The curing proceeded under mild reaction conditions to produce the very hard cross-linked film (artificial urushi) with a high gloss surface. A new cross-linkable polyphenol was synthesized by oxidative polymerization of cardanol, a phenol derivative from cashew-nut-shell liquid, by enzyme-related catalysts. The polyphenol was readily cured to produce the film (also artificial urushi) showing excellent dynamic viscoelasticity.
Kobayashi
S
S
Department of Materials Chemistry, Graduate School of Engineering, Kyoto University, Japan. kobayasi@mat.polym.kyoto-u.ac.jp
Uyama
H
H
Ikeda
R
R