Plastic and nonmetallic article shaping or treating: processes – Reactive gas or vapor treatment of work – Work is organic material
Patent
1993-07-29
1995-07-11
Kuhns, Allan R.
Plastic and nonmetallic article shaping or treating: processes
Reactive gas or vapor treatment of work
Work is organic material
264109, 264115, B29C 4300
Patent
active
054318688
ABSTRACT:
Wood fibers obtained by the fiberization of wood are acetylated in a vapor phase acetylating agent acetic acid anhydrate or the like. The acetylated fibers are accumulated, and molded into a solid wood board. By means of the manufacturing method of the present invention, it is possible to obtain wood board which exhibits little moisture absorption and water absorption. Furthermore, the acetylation is conducted in the vapor phase acetylating agent, so that the amount of acetylating agent used is greatly reduced in comparison with the case in which the acetylation is conducted in the liquid phase acetylating agent.
REFERENCES:
patent: 2417995 (1947-03-01), Stamm et al.
R. M. Rowell, Dimensional stability of particleboard made from vapor phase acetylated pine wood chips, Nordic Pulp and Paper Research Journal No. 2/1986.
Rowell, Tillman & Simonson, A Simplified Procedure for the Acetylation of Hardwood and Softwood Flakes for Flakeboard Production, Journal of Wood Chemistry and Technology, 6(3), 427-448(1986).
A. D. Sheen, The Preparation of Acetylated Wood Fibre on a Commercial Scale, Chemical Modification of Lignocellulosics, 7-8th Nov. 1992, Rotorua, New Zealand.
Y. Harada, Proceedings of the International Symposium on Chemical Modification of Wood, 17-18th May, 1991, Kyoto, Japan.
Y. Nishino, Simplified Vapor Phase Acetylation of Small Specimens of Hinoki Wood with Acetic Anhydride, Journal of the Japan Wood Research Society, vol. 37, No. 4, pp. 370-374 (1991).
Suzuki, Size-stability of Wood Boards, Wood Science and Utility Engineerings (Report of Study Groups of the Japan Wood Research Society, 1989).
Kuhns Allan R.
Yamaha Corporation
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