Patent ID: 7576231

Claim:
A method for producing an isocyanate group-containing siloxane compound comprising the step of reacting a halogenated siloxane compound represented by the following general formula (1): or the following general formula (2) wherein R 1 , R 2 , R 3 , and R 4 are independently hydrogen atom, a monovalent hydrocarbon group containing 1 to 8 carbon atoms, or a siloxy group represented by OSiR 5 R 6 R 7 wherein R 5 , R 6 , and R 7 are a monovalent hydrocarbon group containing 1 to 8 carbon atoms, X is a halogen atom, n is an integer of 1 to 10, a is 0, 1, or 2, and b is an integer of 2 to 9; with a cyanate salt represented by the following general formula (3): M m+ (OCN) m (3) wherein M represents an alkali metal or an alkaline earth metal, and m is 1 or 2; in the presence of a metal iodide salt to produce the isocyanate group-containing siloxane compound represented by the following general formula (4): or the following general formula (5): wherein R 1 , R 2 , R 3 , R 4 , n, b, and a are as defined above.