Organic compounds -- part of the class 532-570 series – Organic compounds – Silicon containing
Patent
1999-06-07
2000-09-05
Shaver, Paul F.
Organic compounds -- part of the class 532-570 series
Organic compounds
Silicon containing
C07F 708
Patent
active
061145602
ABSTRACT:
A mixture of short-chain polysulfide silanes having the formula: (RO).sub.3 SiC.sub.3 H.sub.6 S.sub.n C.sub.3 H.sub.6 Si(OR).sub.3 wherein R is methyl or ethyl and n is a positive number having a distribution in the average range of 2.1.ltoreq.n.ltoreq.2.9, is prepared by reacting one mole of an anhydrous sulfide of the formula: M.sub.2 S or NS wherein M is an alkali metal or ammonium and N is an alkaline earth metal or zinc, with (n-1) mole of sulfur in an inert gas atmosphere and in a polar solvent, thereby forming polysulfide compounds, and reacting the polysulfide compounds with a halogenopropyltrialkoxysilane of the formula: (RO).sub.3 SiC.sub.3 H.sub.6 X wherein R is as defined above and X is a halogen atom. The method is simple to produce polysulfide silanes in high yields.
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English Abstract for JP-A 7-228588.
Ichinohe Shoji
Yanagisawa Hideyoshi
Shaver Paul F.
Shin-Etsu Chem Co., Ltd.
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