发明名称 |
Fremgangsmåde til fraktionering af ligniner fra dampeksploderede lignocellulosematerialer til dannelse af fraktioner med forskellige, men reproducerbare egenskaber og nogle fremgangsmåder til omdannelser heraf og de således fremstillede produkter |
摘要 |
The chemical components of lignocellulosic material which have been dissociated by a steam explosion process can be extracted from the mixture of components using a solvent extraction process. The solvents are water, alcohol and a mild caustic in that order, or the alcohol step can be by-passed and only water and caustic are used. The caustic is a stronger solvent and it will extract the alcohol solubles along with the caustic only solubles. The eluant from the these extractions contains a range of lignin derived substances, which have different applications, such as thermoplastic and thermosetting characteristics. This invention describes a method for partitioning these lignin components into reproducible fractions having definable characteristics for particular applications. For instance, many copolymer applications require a thermosetting only fraction of the lignin. Other applications require a thermoplastic only lignin. The patent also describes a process for converting the thermoplastic lignin fraction to thermosetting lignin. <IMAGE> |
申请公布号 |
DK0446556(T3) |
申请公布日期 |
1995.09.18 |
申请号 |
DK19900810186T |
申请日期 |
1990.03.12 |
申请人 |
TIGNEY TECHNOLOGY INC. |
发明人 |
RITCHIE, GEORGE S.;DE LONG, EDWARD ALBERT |
分类号 |
C08H7/00;C08H8/00;D21B1/36;D21C3/02;D21C3/04;D21C3/20;(IPC1-7):C08H5/02;C07G1/00;C08H5/04 |
主分类号 |
C08H7/00 |
代理机构 |
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地址 |
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