By Rong Lu, Tetsuo Miyakoshi
Lacquer Chemistry and Applications explores the subject of lacquer, the single usual product polymerized through an enzyme that has been used for a coating fabric in Asian nations for hundreds of thousands of years.
Although the human-lacquer-culture, together with cultivation of the lacquer tree, harvesting, and using lacquer sap, has an extended background of greater than thousand years, there's little or no info on hand at the sleek medical easy methods to learn lacquer chemistry.
This booklet, according to the result of the authors' 30 years of study on lacquer chemistry, bargains lacquer researchers a distinct reference at the technological know-how and purposes of this vitally important fabric.
- Covers the chemistry and houses of lacquer, together with synthesis of its quite a few components
- Provides updated analytical suggestions for lacquer identity and characterization
- Discusses attainable toxicity effects
- Outlines new amendment thoughts for constructing better functionality material
- Presents the historical past of this flexible coating fabric that has advanced from its origins in Asian international locations over hundreds of thousands of years
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Additional info for Lacquer Chemistry and Applications
Thus, the compound should have structure 6 that is produced by coupling of a 3 ,4-dihydroxyl-5-alkenylphenyl group with concomitant elimination of a 3-[8′Z,10′E,12′Z-tridecatrienyl]catechol fragment. 10) corresponded to 1J coupling of 1H-13C in the CH group at C-14′ in the side chain of compound 4. 3 corresponded to 1J coupling of H-14′/C-15′ and H-15′/C-14′, respectively. 9 corresponded to 3J coupling of 1H-13C at H-14′/C-2″, H-14′/C-6″, and H-2″/C-14′, respectively. 9 corresponded to 1J coupling of H-14′/C-13′ and H-13′/C-14′, respectively.
53. 0 corresponded to 2J coupling of H-3/C-4 and H-3/C-2, respectively. This would lead to structure 7 for the compound. 8 corresponding to 1J coupling of 1H-13C in the CH groups of the biphenyl ring at C-3 and C-3′ of compound 8, because the molecule is symmetric with respect to a plane perpendicular to the center of molecule that bisects the (C-4)-(C-4′) bond, if the nature of the alkenyl groups substituted at C-6 and C-6′ is the same or not considered. 2 corresponded to 3J coupling of H-3/C-5 and H-3′/C-5′.
Chromatogr. 284 (1984) 463–473.  T. Miyakohsi, K. Nahashe, K. Yoshida, Progress in Urushi Science, IPC Publisher, Tokyo, Japan, 2000 (in Japanese).  K. Nahashe, T. Miyakoshi, A guide to urushi chemistry 2. Toso Toryo 1998, No. 574, 30-41, Chem. Abstr. 128 (1998) 231625 (in Japanese). M. Du, R. Oshima, H. Iwatsuki, J. Kumanotani, High-resolution gas—liquid chromatographic analysis of urushiol of the lac tree, Rhus vernicifera, without derivatization, J. Chromatogr. 295 (1984) 179–186.  H.