PREPARATION METHOD OF PIMARIC ACID TYPE RESIN ACID

专利名称：PREPARATION METHOD OF PIMARIC ACID

TYPE RESIN ACID

发明人：ZHAO, ZHENDONG,CHEN, YUXIANG,BI,

LIANGWU,GU, YAN,LI, DONGMEI,WANG,JING,LU, YANJU

申请号：EP10753141申请日：20100318公开号：EP2410030A4公开日：20121226

摘要：Preparation method of pimaric acid type resin acid includes the following steps:(1) adding refined resin acid, turpentine or rosin and maleic anhydride at a mass ratio of 1:0.3-1.5 into a reaction bottle, dissolving them in C 1 ˆ¼C 10 lower fatty acid solvent, themass ratio of the C 1 ˆ¼C 10 low fatty acid to refined resin acid is 0.05-30: 1, then carryingout addition reaction by heating directly or with assistance of microwave, subsequentlycooling, crystallizing, filtering, and washing, and (2) combining the filtrates collected instep (1), stripping of the solvent by vacuum distillation to obtain pimaric acid type resinacid coarse product, dissolving the resulting coarse product in NaOH aqueous solution toprepare aqueous solution of pimaric acid type resin acid salt, adjusting pH to 6-14 with amineral acid or an organic acid under stirring, and directly purifying or acidifying followedby purifying the resulting precipitation to obtain the final product. The method has thecharacteristics of high yield, high product content, low cost, and low environmentalpollution.

申请人：INSTITUTE OF CHEMICAL INDUSTRY OF FOREST PRODUCTS, CHINESE

ACADEMY OF FORESTRY

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