Patent ID: 7309797
Filing Date: 2007-12-18
Classification: C07F

Abstract:
1. A method for preparing a sulfide chain-bearing compound having the average compositional formula (2): wherein R 1 and R 2 each are a monovalent hydrocarbon group of 1 to 4 carbon atoms, R 3 is a divalent hydrocarbon group of 1 to 10 carbon atoms, m has an average value of 2≦m≦6, and p is 0, 1 or 2, the method comprising the steps of providing a halogenoalkyl group-bearing organosilicon compound having the general formula (1): wherein R 1 and R 2 each are a monovalent hydrocarbon group of 1 to 4 carbon atoms, R 3 is a divalent hydrocarbon group of 1 to 10 carbon atoms, X is a halogen atom, and p is 0, 1 or 2, or a mixture thereof with sulfur, and subsequently reacting said halogenoalkyl group-bearing organosilicon compound or mixture thereof with sulfur with an aqueous solution or water dispersion of a polysulfide having the formula M