Title: Method for mfg. dissolvable lignin from alkali lignin
Application Number: 86107289 Application Date: 1986.10.23
Publication Number: 1018124 Publication Date: 1988.05.04
Approval Pub. Date: Granted Pub. Date: 1990.03.28
International Classifi-cation: C07G1/00,C08H5/02
Applicant(s) Name: Huanan Polytechnical Univ. Address:
Inventor(s) Name: Chen Minglie, Feng Jianhao
Attorney & Agent: SHENG PEIZHEN LUO YONG
Abstract:
     In this invention, the alkaline lignin is added with organic solvent in pressure reactor at certain temperature and for a certain period so as to be converted into a lignin which is soluble in ordinary organic solvent.The organic solvent added can be a mixture of methyl alcohol, ethanol and acetone or their water solution. Processing temperature is 170 deg.C-210 deg.C and processing time is 5-120 minutes. The soluble lignin obtained can be dissolved in acetone, butanone, or the mixture of acetone and ethanol, or in ethanol or acetone which are in the temperature of over 50 deg C. It can be used as final products or as raw material for further chemical processing
Time: 11