微波辐射下松香与多元醇的酯化反应研究

Abstract

Abstract: Glyceryl rosinate with acid value 8.3 mgKOH/g, Gardner color 8, softening point 82.0℃ and pentaerythritol rosinate with acid value 8.6 mgKOH/g, Gardner color 7, softening point 91.0℃ were prepared by esterification of rosin with glycerin or pentaerythritol respectively under microwave radiation using zinc oxide as a catalyst.Esterification of 20 g rosin with 2.4 g glycerin and 0.068 g zinc oxide or with 3.2 g pentaerythritol and 0.034 g zinc oxide could be finished under 650 W microwave radiation for 30 min in atmosphere pressure and then for 30 min in 5 kPa to give the optimized result.

Key words: rosin, microwave radiation, esterification of rosin

CLC Number:

TQ351.471

LIN Zhong-xiang;CHEN Ri-qing . STUDY ON ESTERIFICATION OF ROSIN WITH POLYOLS UNDER MICROWAVE RADIATION[J]. , 2003, 23(3): 37-40.

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STUDY ON ESTERIFICATION OF ROSIN WITH POLYOLS UNDER MICROWAVE RADIATION

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