Hydroxy ether organosilicon compounds

摘要

Organosilicon compounds containing hydroxy ether groups are silanes and siloxanes of the general formula wherein each R11 is a monovalent atom or radical selected from the hydrogen atom and hydrocarbonoxy, hydrocarbon, halohydrocarbon and halohydrocarbonoxy radicals; y is 0, 1, 2, or 3; R1 is an alkylene radical, preferably containing 2, 3 or 4 carbon atoms; m is an integer of at least 4; B is a monovalent atom or radical selected from the hydrogen atom and hydrocarbon, hydrocarbonoxyhydrocarbonyl, halohydrocarbon and halohydrocarbonoxyhydrocarbonyl radicals and Y is a divalent radical of the general formula -CH2CHOHRa-or of the general formula where R is a divalent or trivalent radical bonded to the silicon by a C-Si linkage and selected from hydrocarbon and halohydrocarbon radicals and radicals composed of carbon, hydrogen and oxygen in the form of an ether linkage, R being a divalent radical and a being 0 or 1 when Y is acyclic, and R being a trivalent radical and a being 1 when Y is cyclic. The siloxanes may also be copolymers of from 0.001 to 99.999 mol. per cent of siloxane units of the general formula wherein B, R1, Y, R11 and m are as hereinbefore defined and y is 0, 1 or 2 with from 0.001 to 99.999 mol. per cent of siloxane units of the general formula in which A is selected from the hydrogen atom and the following monovalent radicals: hydrocarbon, halohydrocarbon, hydrocarbonoxyhydrocarbonyl and halohydrocarbonoxyhydrocarbonyl radicals and groups of the general formulae DSiA13 and DSiOSiA13 in which D is a divalent hydrocarbon radical and A1 is the same as A and x has a value from 0 to 3 inclusive. The organosilicon compounds, polymers and copolymers may be prepared by reacting the corresponding epoxides containing units of the general formulae and with alcohols of the general formula H(OR1)mOB in the presence of a Lewis acid such as SnCl4, AlCl3, BF3 etherate and FeCl3 at a temerature below 100 DEG C. Many radicals R11, R, R1, B, Y and A are specified, some of which are unsaturated. Many examples are given of the preparation of the silanes, siloxanes (including disiloxanes) and co-polysiloxanes containing hydroxyether groups. The products are useful as surfactants in th preparation of polyurethane foams, as emulsifying agents for organosiloxane liquids and as lubricating agents. An epoxyorganopolysiloxane is prepared in Example 1 by equilibrating octamethylcyclotetrasiloxane with tetramethyldisiloxane and reacting the product with excess allyl glycidyl ether in the presence of a butanol solution of chloroplatinic acid Epoxyorganosiloxanes are prepared in Example 4 by (1) reacting tetramethyldisiloxane with allyl glycidyl ether to give and (2) reacting the product of (1) with vinyl-pentamethyldisiloxane to give Specifications 834,326 and 983,850 are referred to.