METHOD FOR PRODUCING POLYMERIZED ROSIN ESTER AND POLYMERIZED ROSIN ESTER OBTAINED BY THE METHOD

摘要

PROBLEM TO BE SOLVED: To provide a high-purity polymerized rosin ester which is light color and has a high dimer component content.;SOLUTION: A rosin ester is polymerized using at least one kind of catalyst selected from the group consisting of formic acid, acetic acid, zinc chloride, and boron trifluoride or its complex to prepare a specific polymerized rosin ester having a rosin dimer component content of 80 wt.% or more. The specific polymerized rosin ester is hydrogenated using a palladium catalyst at specific conditions of a hydrogen pressure of 5-15 MPa and a reaction temperature of 200-280°C.;COPYRIGHT: (C)2014,JPO&INPIT