PROCESS FOR DISPROPORTIONING ROSIN AND RESIN ACIDS Russian patent published in 1997 - IPC

FIELD: forestry engineering, chemical, pulp-and-paper industry for preparation of surfactants and manufacture of synthetic rubber. SUBSTANCE: process for disproportioning resin acids by heating thereof in the presence of catalyst such as palladium on carbon-carbon composite with the following structural characteristics: interplane distance d_0,02 is 0.34-0.35 nm and microcrystallite α_a is 3.0-5.5 nm and α_c is 3.0-6.8 nm. Characteristics of properties: weight ratio of abietic acids is 0.015-0.036% and acid number is 170-180 mg KOH/g. EFFECT: higher efficiency. 2 tbl