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US 5,670,688 AGranted
Process for the industrial manufacture of a cycloalkylsilane or polyorganosiloxane
AssigneeDow Corning Corporation
InventorsPaul Charles Dinh, Binh Thanh Nguyen
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Abstract
This invention relates to a process for the manufacture of a silane or polyorganosiloxane containing a cycloalkyl substituent by hydrogenation of a silane or polyorganosiloxane containing at least one aromatic hydrocarbon substituent in the presence of a Raney nickel catalyst without a solvent.
Claims13
A process for the industrial manufacture of a silane or polyorganosiloxane containing a cycloalkyl substituent, the process comprising
- (a) adding a flowable mixture of Raney nickel catalyst and carrier fluid to a reactor,
- (b) removing the carrier fluid from the Raney nickel catalyst under an inert atmosphere,
- (c) after removing the carrier fluid, adding hydrogen and a reactant consisting of a silane or a polyorganosiloxane having at least one aromatic hydrocarbon substituent into the reactor containing the Raney nickel catalyst,
- (d) heating the catalyst and the silane or polyorganosiloxane and hydrogen at a temperature sufficient to form a silane or polyorganosiloxane containing a cycloalkyl substituent.
1 more element
A process for the industrial manufacture of a silane or polyorganosiloxane containing a cycloalkyl substituent, the process comprising
- charging a reactor with a flowable mixture of Raney nickel catalyst and carrier fluid,
- removing the carrier fluid under an inert atmosphere from the Raney nickel catalyst after the reactor is charged,
- continuously feeding a silane or polyorganosiloxane containing at least one aromatic hydrocarbon substituent into the reactor,
- continuously feeding hydrogen into the reactor,
- heating the reactor to a temperature 20.degree. to 300.degree. and
- forming and continuously removing from the reactor a silane or polyorganosiloxane containing a cycloalkyl substituent.
3 more elements
Dependencies are inferred from the claim text.