CJCU

Chem. J. Chinese Universities ›› 2005, Vol. 26 ›› Issue (3): 592.

• Articles • Previous Articles    

Synthesis and Chain-extending Effect of Bis(N-methyl-acetamido) dimethylsilane

HU Hong-Guo1, ZHENG Qiang1,2, LIN Wei-Wei1, CHEN Chun-Rong1, TAO Xiao-Le2   

  1. 1. Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China;
    2. R & D Center, Hangzhou Zhijiang Silicone Co., Ltd., Hangzhou 311203, China
  • Received:2004-03-05 Online:2005-03-10 Published:2005-03-10

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Abstract: A linear difunctional silylamide, bis(N-methylacetamido)dimethylsilane(MADMS), was synthesized by the reaction of dimethyldichlorosilane and N-methylacetamide. The chemical structure of the product was confirmed by IR, 1H NMR and elemental analysis. When MADMS was mixed with PDMS, both the molecular weight and the viscosity of the mixture, as measured by GPC and viscometer, were found to be increased significantly in the initial period, which was ascribed to the hydrolysis efficiency of MADMS. The results show that MADMS possessed the chain-extending ability and can be used for mass application.

Key words: Bis(N-methylacetamido)dimethylsilane, Chain extender, Organosilane compound, Low modulus

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