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WOOD AND METHOD FOR PRODUCING WOOD NEW 新技術説明会

外国特許コード F190009975
整理番号 (170096JP01)
掲載日 2019年10月28日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2019JP007944
国際公開番号 WO 2019168127
国際出願日 平成31年2月28日(2019.2.28)
国際公開日 令和元年9月6日(2019.9.6)
優先権データ
  • 特願2018-035653 (2018.2.28) JP
発明の名称 (英語) WOOD AND METHOD FOR PRODUCING WOOD NEW 新技術説明会
発明の概要(英語) The present invention removes lignin while maintaining the structure constituted of cellulose and hemicellulose. A raw wood material is immersed in a solution comprising an acid and an alcohol under the conditions of a temperature of 140-170°C and then immersed in a solution containing chlorous acid ions or hypochlorous acid ions.
従来技術、競合技術の概要(英語) BACKGROUND ART
Wood building materials, furniture, as the raw material of paper and the acoustic material is widely used. In addition, such as bioethanol production from the viewpoint of the biorefinery woody biomass is used. Among them, in view of the case of utilizing the biorefinery wood, wood lignin is a component of is removed, milling to extract cellulose and cellulose. For removal of the lignin generally referred to as the pre-processing. It is assumed that the cell wall to various preprocessing techniques to break has been reported.
As the pre-processing method for removal of the lignin, vapor blasting treatment, an acid treatment and alkaline treatment such as the physico-chemical technique represented by, using a microorganism or lignin degrading enzyme lignin decomposition and a biological method. Also, in addition to these up to now, as a pretreatment method, for example, physical milling, cooking, ozone oxidation, such as γ-ray irradiation has been studied.
Moreover, acetic acid, ethanol, a high boiling alcohol, and phenol with an organic solvent is referred to as a solvolysis heat treatment at a high, effective to remove the lignin known as pre-processing method. Ind Eng Chem Res,49 (4), 1467-1472,2010a Hallac et al. is, a kind of milled wood utsugi, a mixed solvent of ethanol and 195°C of sulfuric acid, by treatment 1, the percent by weight of lignin found that the condition in which the digits are 1. Further, in Hallac et al. Biotechnol Bioeng,107,795-801,2010b, before tissue of the sample after processing was observed, the intercellular layer (the layer between the cells and cell) of lignin is preferentially removed to reveal. From the above results, and pre-processing described Hallac et al. Biotechnol Bioeng,107,795-801,2010b Hallac et al.Ind Eng Chem Res,49 (4), 1467-1472,2010a the method, at the same time to remove the lignin to facilitate isolation between the cells of the pulp to be concluded that the effect is high.
On the other hand, Japanese Patent Laid-Open Patent Application 2006-001270, the chips of cedar soap-water and immersed in a mixture of soda ash, hydrogen peroxide water to remove the lignin processing to produce wood chips has been disclosed. Japanese Patent Laid-Open Patent Application 2015-080759, the lignocellulosic , heating the ethylene glycol solution and the solid-liquid separation and extraction processing stage, the liquid component including the lignin and cellulose-containing solid component can be separated are disclosed. Patent Application JP-2012-111849, wood flour obtained by pulverizing wood chips for the degreasing treatment, delignification treatment, the milling processing to de cellulose, after bleaching treatment, is subjected to treatment with cellulase system is performed, thereafter, fine processing is executed in a method of producing fine fibrous cellulose has been disclosed. In particular, delignification treatment as an example of the use of acetic acid and sodium chlorite Wise method is disclosed. In addition, the wood vol.50,No.3,pl32-138 (2010) Society, 3.8-4.0 pH acid was added and the solution of sodium chlorite is delignification treatment using the disclosed.
As described above, the lignocellulosic material such as wood to the delignification in a variety of ways according to the method has been known. However, the above-described conventional method, the lignin, cellulose and cellulose to a technique for separating the milling, the tissue or cells of the wood and break, before the processing has not been possible to maintain the shape. In addition, JP-2006-001270 discloses a honeycomb structure of the wood chips to maintain the disclosed method of removing of the lignin, a wood chip itself can not maintain the shape of the processing.
As described above, to reliably remove the lignin while far, cellulose and cellulose milling to maintain a structure composed of a technique has not been known. Therefore, the present invention, in view of the circumstances described above, as the wood is reduced while maintaining the structure of the wood lignin, cellulose and cellulose to milling while maintaining a structure composed of a method of removing the lignin, the method can be applied to the wood and wood lignin is reduced to provide a manufacturing method of the object.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY
  • NIPPON SHOKUBAI CO., LTD.
  • 発明者(英語)
  • HORIKAWA, Yoshiki
  • TSUSHIMA, Rino
  • KUREI, Tatsuki
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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