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US 4,377,706 AGranted
Polyalkoxysilylenolethers
AssigneeGeneral Electric Company
InventorJohn E. Hallgren
Life of this patent
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Abstract
Polyalkoxysilylenolethers, for example, methyldimethoxyisopropenoxysilane, are provided and a method for making such silanes. The dialkoxysilylenolethers can be used as end-capping silanes for making noncorrosive RTV compositions.
Claims8
Methyldimethoxyisopropenoxysilane.
A method for making polyalkoxysilylenolethers which comprises,
- (1) heating a mixture of a polyalkoxysilane of the formula, ##STR6## and a ketone selected from the class consisting of acetone, methylethylketone, diethylketone, acetophenone, cyclohexanone, benzophenone and 2-pentaneone in the presence of an effective amount of a transition metal catalyst and
- (2) recovering the resulting polyalkoxysilylenolether from the mixture of (1),
- where R is a C.sub.(1-13) substituted or unsubstituted monovalent hydrocarbon radicals, R.sup.1 is a C.sub.(1-8) alkyl radical, a is an integer equal to 1 or 2, b is an integer equal to 0 or 1, and the sum of a+b is equal to 1 or 2.
A method for making polyalkoxysilylenolether which comprises,
- (1) effecting reaction at a temperature in the range of from 20.degree. C. to 250.degree. C. of a polyhalosilane having the formula, ##STR7## and an alkanol having the formula,
- R.sup.1 OH
- to produce a polyalkoxysilane having the formula, ##STR8## (2) effecting reaction between the polyalkoxysilane of (1) and a ketone selected from the class consisting of acetone, methylethylketone, diethylketone, acetophenone, cyclohexanone, benzophenone and 2-pentaneone at a temperature in the range of between 20.degree. C. to 250.degree. C. in the presence of an effective amount of a transition metal catalyst and
- (3) recovering the polyalkoxysilylenolether from the mixture of (2),
- where X is halogen, where R is a C.sub.(1-13) substituted or unsubstituted monovalent hydrocarbon radicals, R.sup.1 is a C.sub.(1-8) alkyl radical, a is an integer equal to 1 or 2, b is an integer equal to 0 or 1, and the sum of a+b is equal to 1 or 2.
2 more elements
Dependencies are inferred from the claim text.