Development of a fast drying lacquer based on raw lacquer sap

Preparation and characterization of a new lacquer based on blending urushiol with thitsiol

“…The peaks at the m/z ¼ 370 (C 17 -triene type), 372 (C 17 -diene type), 374 (C 17 -monoene type), 376 (C 17 -saturated type), and 382 [C 6 H 5 -(CH 2 ) 12 C 6 H 3 -(OH) 2 (figure not shown). The peaks at the m/z-range of 684-692 correspond to O-dimethyl ethers of urushiol dimers, whereas the peaks in the m/z-range of 724-752 correspond to O-dimethyl ethers of thitsiol dimers.…”

“…Previously, we developed a series of fast-drying lacquers using kurome, 2 hybridized, [3][4][5] and blended methods. 6 Using these techniques to improve the slow drying time of thitsiol, in this study, we tried blending urushiol with thitsiol to make a new blended lacquer.…”

Effects of lacquer polysaccharides, glycoproteins and isoenzymes on the activity of free and immobilised laccase from Rhus vernicifera

“…1). All of these components have been separated and purified [1,5] and some of the components have been studied individually, such as the structural analysis of urushiols and laccols [6][7][8][9][10][11]; lacquer polysaccharides [4,[12][13][14]; fast drying lacquer [15][16][17][18][19], and the morphology and components of lacquer film [20][21][22][23], however, their interactions have been scarcely investigated due to their complexity [24]. Some interesting phenomena have been observed, for example lacquer polysaccharides in the surface of the lacquer film act as a barrier layer against oxygen diffusion [25].…”

Application of Pyrolysis-Gas Chromatography/Mass Spectrometry to the Analysis of Lacquer Film

“…www.intechopen.com In order to reveal the enzymatic polymerization mechanism of thitsiol, we reinvestigated the dimer structures produced in the initial stage of enzymatic polymerization by using modern techniques including 1H-1H and 1H-13C correlation two-dimensional NMR measurements [18][19]. The structures of thitsiol dimers from Melanorrhoea (Gluta) usitata were characterized by means of high-resolution NMR spectroscopy involving twodimensional NMR measurements using field gradient DQF-COSY, HMQC, and HMBC.…”