Preparation of rosin esters

Details Preparation of rosin esters Preparation of rosin esters

C - Chemistry, Metallurgy

09

F

260/122

C09F 1/04 (2006.01)

Patent

CA 1124233

A B S T R A C T Oxygen-stable rosin-esters are prepared by arylsulfonic acid catalysis. More particularly, the invention provides a process for effect- ing rosin esterification which comprises the steps of: reacting a rosin with a primary polyhydric alcohol in at least equivalent amounts, incorporating an arylsulfonic acid in catalytic amounts either initially or subsequent to said rosin-primary polyhydric alcohol reaction and, thereafter, recovering an oxygen-stable rosin ester of good color and softening point and having an acid number below about 20. The reaction proceeds to completion in shorter time than usual and produces rosin-esters of improved oxygen-stability, color and softening point.

321860

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