随机质心衍射法优化合成1,1,1,3,5,5,5-七甲基三硅氧烷的工艺研究

doi:10.13218/j.cnki.csdc.2014.02.016

Abstract

Abstract: Synthesis of 1,1,1,3,5,5,5-heptamethyltrisiloxane (MD^HM) was processed by adopting high hydrogen-content silicone (D^H) that containing 1.4% (mass fraction) of hydrogen and hexamethyldisiloxane (MM) as starting materials and strong acidic ion exchange resin as catalyst.The synthesis process was optimized by applying Random-Centroid Optimization Method.Only 13 tests were needed for the optimization and results showed that the optimal conditions were as follows:reaction mass ratio,m(D^H)∶m(MM)=1∶13.03;dosage of the catalyst,6.34%;reaction temperature and time,65.3 ℃ and 8.15 h,respectively.Average yield of the product achieves 39.56%.

Key words: 1,1,1,3,5,5,5-heptamethyltrisiloxane, Random-Centroid Optimization Method, strong acidic ion exchange resin

CLC Number:

TQ423.4

GONG Hong-sheng, HU Wen-bin, LIAO Lie-wen, ZHANG Wei-xin, WANG Chang-tong. Optimization of the process for synthesizing 1,1,1,3,5,5,5- heptamethyltrisiloxane by Random-Centroid Optimization Method[J].China Surfactant Detergent & Cosmetics, 2014, 44(2): 70-74.

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Optimization of the process for synthesizing 1,1,1,3,5,5,5- heptamethyltrisiloxane by Random-Centroid Optimization Method

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