Terpene resin hydrogenation method

Abstract

The invention discloses a terpene resin hydrogenation method, and the method comprises: carrying out resin synthesis, and activating a hydrogenation catalyst in a first fixed bed hydrogenation reactorand a second fixed bed hydrogenation reactor; adding a cyclohexane solvent into the reactor at a speed of 0.1-5 ml / min, adjusting the hydrogen introduction speed to 300-400 ml / min, changing the cyclohexane solvent into the molecular sieve dehydrated reaction solution obtained in the step 1) after a liquid material exists in the product liquid separation tank, and carrying out a reaction to obtainhydrogenated terpene resin, thereby obtaining terpene hydrogenated resin. The method has the advantages that the production cost can be reduced, the reaction temperature is low, the reaction efficiency is improved, and the obtained hydrogenated terpene resin is stable in performance, not prone to discoloring and the like.

Description

technical field

[0001] The invention belongs to the field of turpentine deep processing, in particular to a method for hydrogenating terpene resins. Background technique

[0002] Terpene resin is an excellent tackifier and an important material for adhesives, which plays a key role in the performance and quality of adhesives. Because the terpene resin polymer contains double bonds, it will change color after absorbing oxygen, which will affect the appearance and quality of the product, and have a certain impact on heat resistance and weather resistance. At the same time, aluminum trichloride is generally used as a catalyst in the polymerization of terpene resins, which is easy to introduce chloride ions into the resin, resulting in a decrease in the quality of the resin. In order to further improve the quality of the terpene resin, remove impurities and enhance the stability of the terpene resin To reduce the color of terpene resin, it needs to be hydrogenated, and remove i...