松香树脂酸的氯化氢-氯化锌的催化异构-二聚

本文开发了氯化氢-氯化锌使松香树脂酸的异构-二聚同时进行的新工艺,探讨了对工艺影响的因素,优选出工艺最佳条件,证实该工艺具有良好的可控性和稳定性,140标号的聚合松香其二聚体含量达60％或更高。氯化氢不仅有异构能力和活化反应体系,降低反应的活化能,并且在多方面有良好的促进作用,如:提高了产品的二聚体含量,减少了脱酸作用,稳定了工艺条件和产率。

CATALYTIC ISOMERIZATION-DIMERIZATION OF RESIN ACIDS OF ROSIN WITH HCl-ZnCl_2

A new technology for simultaneous isomerization and dimerization of resin acids with HCl-ZnCl2 as catalyst has been developed. Factors influencing the process and the optimum conditions were investigated. It is confirmed that the technology has good controllability and stability. The product of 140 polyrosin contains about 60% dimers or more. On the other hand, HC1 not only possesses the ability of isomerization, decreasing the activation energy of the reaction, but also displays actively in the process, such as increasing the content of dimers in the product, decreasing the decarboxylation, stabilizing the technological conditions and total yield.