Title: High-output non-acid-residue process for preparing poly-rosin
Application Number: 93114805 Application Date: 1993.11.17
Publication Number: 1105378 Publication Date: 1995.07.19
Approval Pub. Date: Granted Pub. Date: 1998.12.02
International Classifi-cation: C09F1/04
Applicant(s) Name: Inst. of Forest Products Chemical Industry, Chines Address: 210037
Inventor(s) Name: Liu Hongjun, Gao Dehua, Liu Hongjun
Attorney & Agent: LOU GAOCHAO WANG RUI
Abstract:
     The process for preparing polymerized rosin using sulfuric acid-acetic acid as catalyst includes dissolving raw rosin in toluene or xylene solvent, polymerization, water washing and distillation, and features high yield up to 91-93% and no generation of acid dregs.
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