Wood treated by impregnation with mixed anhydrides

Details Wood treated by impregnation with mixed anhydrides Wood treated by impregnation with mixed anhydrides

2010-07-23

2011-10-11

Cleveland, Michael (Department: 1712)

Stock material or miscellaneous articles

Composite

Of carbohydrate

C427S325000, C427S440000, C428S535000, C428S541000

Reexamination Certificate

active

08034462

ABSTRACT:
Process for the chemical treatment of lignocellulose materials, in particular of at least one piece of wood, characterized in that said materials are subjected to impregnation by a chemical agent comprising hydrocarbonaceous chains, this agent being chosen from mixed anhydrides, except for the mixed anhydride of acetic/benzoic acid, said agent being suitable for providing covalent grafting of a plurality of hydrocarbonaceous chains to said materials.

REFERENCES:
patent: 4592962 (1986-06-01), Aoki et al.
patent: 4832987 (1989-05-01), Ueda et al.
patent: 5550225 (1996-08-01), Philippe
patent: 6146710 (2000-11-01), Symons
patent: 6235346 (2001-05-01), Barnisin, Jr.
patent: 6248879 (2001-06-01), Anderson et al.
patent: 6406749 (2002-06-01), Symons
patent: 6426118 (2002-07-01), Barnisin, Jr.
patent: 2001/0026841 (2001-10-01), Barnisin, Jr.
patent: 2004/0258941 (2004-12-01), Neogi et al.
patent: 2005/0163935 (2005-07-01), Magne et al.
patent: 2006/0269684 (2006-11-01), Presnell et al.
patent: 190576 (1986-08-01), None
patent: WO 03/084723 (2003-10-01), None
Li, Jian-Zhang et al. “Chemical modification of wood by anhydrides without solvents or catalysts”, J Wood Sci 46:215-221 (2000).
Bernard S.W. Dawson et al., Acylation of Radiata Pine Sapwood, “Reactivity of Radiata Pine Sapwood Towards Carboxylic Acid Anhydrides”, (1999) pp. 195-198.
Li, Jian-Zhang et al. “Chemical modification of wood by anhydrides without solvents or catalysts”, J Wood Sci 46:215-221 (2000).
Vaca-Garcia, C. et al. “Cellulose esterification with fatty acids and acetic anhydride in lithium chloride/N.Ndimethylacetamide medium”, JAOCS, vol. 75, No. 2, 315-319 (1998).
Dawson, Bernard S.W. et al. “Reactivity of radiate pine sapwood towards carboxylic acid anhydrides”, Chemical Abstracts Service. vol. 130. No. 20. XP002222940 (1999).
J. Peydecastaing et al,Molecular Crystals and Liquid Crystals, “NIR Study of Chemically Modified Cellulosic Biopolymers”, 2006, 448, 717-724, Chemical Abstract 145:403600.
F. Aloulou et al,Separation and Purification Technology, “Modified cellulose fibres for adsorption of organic compound in aqueous solution”, 2006, 332-342, Chemical Abstract 146:86434.
V. Kon'Shin et al,Izvestiya Vysshikh Uchebnykh Zavedenii, Lesnoi, “Study of acylation of lignocellulose materials by mixture of carboxylic acid-thionyl” 2003, 4, 92-98, Chemical Abstract 141:316027.
A. Neogi et al, U.S. Pat. Appl. Publ., “Method for esterifying hydroxyl groups in wood”, Chemical Abstract 142:58491.
A. Papadopoulos et al, “Efficacy of linear chain carboxylic acid anhydrides as wood protection chemicals”, IRG/WP 02-20395.
C. Hill et al, “The kinetics of anhydride modification reactions of wood. Experimental results theoretical modeling”, IRG/WP 98-40125.

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