Title: Catalytic esterification method of rosin
Application Number: 98113286 Application Date: 1998.07.16
Publication Number: 1208061 Publication Date: 1999.02.17
Approval Pub. Date: Granted Pub. Date: 2001.01.03
International Classifi-cation: C09F1/04
Applicant(s) Name: Guangzhou Inst. of Chemistry, Academia Sinica Address: 510650
Inventor(s) Name: Chang Dongliang, Ha Chengyong
Attorney & Agent: li jilan
Abstract:
     The present invention is catalytic esterification method of rosin and its derivative. Esterification is one important measure of deep processing of rosin and traditional esterification uses Bronsted acid and solid acid as catalyst and requires high temperature and long reaction period. The present invention uses alkyl stannic acids with the amount of 0.1-5% of rosin or its derivative as esterification catalyst. Compared with traditional method, the present invention has the merits of short reaction period, no corrosion to equipment, no "three-waste" pollution, etc.
Time: 6