Patent ID: 7323155

Claim:
A method for the manufacture of compounds according to the formula (H) x Si(cl) y (I), wherein x is 2, 3 or 4, and y is 0, 1 or 2, and x+y=4, by disproportionation of at least one of a hydrochlorosilane of the formula (H) a Si(Cl) b (II), wherein a is 1, 2 or 3, and b is 1, 2 or 3, and a+b=4 and b>y, and a mixture of such hydrochlorosilanes in the presence of a catalyst, wherein the catalyst prior to use a) is washed with hyper-pure water in one or several steps, b) is transferred in a water-moist state into the reactor where the disproportionation shall be carded out, and c) is at least one of treated with boiling methanol and rinsed with methanol in the reactor, and d) the methanol is removed from the catalyst by evacuation and/or by shipping with inert gas.