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US 5,041,595 AGranted
Method for manufacturing vinylalkoxysilanes
AssigneeUnion Carbide Chemicals & Plastics Technology Corporation
InventorsWei-Tai Yang, James S. Ritscher
Life of this patent
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Abstract
A process for directly producing a high purity vinylalkoxysilane by gradually feeding an alkoxysilane containing low levels of ionic chloride or alkyl amine into a reaction zone containing an alkyne and a platinum hydrosilation catalyst.
Claims24
A process for producing a vinylalkoxysilane which comprises
- (i) gradually feeding to a reaction zone an alkoxysilane of the formula HSi(OR').sub.n R".sub.3-n where R' and R" can individually be the same or different and are selected from primary alkyl groups of 1 to 6 carbon atoms and n is 1, 2 or 3, said reaction zone containing an alkyne of the formula RC.tbd.CH where R is hydrogen or a monovalent hydrocarbon radical of 1 to 10 carbon atoms and a platinum hydrosilation catalyst;
- (ii) contacting said alkyne and said alkoxysilane in said reaction zone in the presence of said platinum hydrosilation catalyst and less than 0.1 weight percent ionic chloride and alkyl amine to form vinylalkoxysilane;
- and
- (iii) recovering said vinylalkoxysilane from said reaction zone.
1 more element
A process for producing a vinylalkoxysilane which comprises
- (i) co-feeding to a reaction zone an alkyne of the formula RC.tbd.CH where R is hydrogen or a monovalent hydrocarbon radical of 1 to 10 carbon atoms and an alkoxysilane of the formula HSi(OR').sub.n R".sub.3-n where R' and R" can individually be the same or different and are selected from primary alkyl groups of 1 to 6 carbon atoms and n is 1, 2 or 3;
- (ii) contacting said alkyne and said alkoxysilane in said reaction zone in the presence of a platinum hydrosilation catalyst and less than 0.1 weight percent ionic chloride and alkyl amine to form vinylalkoxysilane;
- and
- (iii) recovering a product stream containing said vinylalkoxysilane from said reaction zone.
1 more element
A continuous process for producing a vinylalkoxysilane which comprises
- (i) co-feeding into a reaction zone an alkyne and an alkoxysilane wherein said alkyne is fed into said reaction zone at a rate which keeps the molar ratio of said alkyne to said alkoxysilane in said reaction zone between about 1.0 to 10.0, said alkyne having a formula RC.tbd.CH where R is hydrogen or a monovalent hydrocarbon radical of 1 to 10 carbon atoms and said alkoxysilane having a formula HSi(OR').sub.n R".sub.3- n where R' and R" can individually be the same or different and are selected from primary alkyl groups of 1 to 6 carbon atoms and n is 1, 2 or 3,
- (ii) contacting said alkyne and said alkoxysilane in said reaction zone in the presence of a platinum hydrosilation catalyst and less than 0.1 weight percent ionic chloride and alkyl amine to form vinylalkoxysilane;
- and
- (iii) simultaneously removing a product stream containing said vinylalkoxysilane from said reaction zone.
1 more element
Dependencies are inferred from the claim text.