Determination of zinc in polymerized rosin by suspension and emulsification sampling-flame atomic absorption spectrometry;

Studies on solid superacid SO_4~(2-)/TiO_2-SiO_2-catalyzed esterification reaction of polymerized rosin and its kinetics;

The effects of dimers content of polymerized rosin,dosage of resol and maleic anhydride on the synthesis of modified phenolic resin were studied.

Troubles of "mixed rosin" appeared at present made the disproportionated rosin manufacture some difficulties that many disproportionated rosin products cannot reach quality index of many customers or may result in higher production cost.

In the presence of alkaline soap as emulsifier and catalyst, hydrogenated rosin sucrose esters (HRSE) were synthesized by transesterification reaction of hydrogenated rosin ethyl ester and sucrose under the conditions of (125±1)℃,molar ratio of hydrogenated rosin ethyl ester to sucrose 1 ∶1, pressure 0.

The hydrogenated rosin (HR) and hydroxyethyl methacrylate (HEMA) based ester was synthesized in one step method.

By analyzing a plenty of practical production data,suitable conditions for controlling the product color during the production of hydrogenated rosin are concluded to be super grade rosin as raw material,melting time 5h and melting temperature 130150,molten rosin flow rate 400L/h,reaction temperature 240250.

The results indicated that N/L-T catalyst prepared by sol-gel-precipitation,followed by calcinations for 2.

Primarily study on preparation for EVA hot melt adhesive with disproportionated rosin of esterification modified as tackifier;

Preparation and performance of disproportionated rosinoyl sarcosine;

Research progress for producing disproportionated rosin;