Unlock instant, AI-driven research and patent intelligence for your innovation.

Process for chlorosilane intermediates manufacture

A technology of dialkyl ether and phenyl halide, applied in the field of preparing phenyl chlorosilane intermediates, can solve the problems such as not mentioning the preparation of phenyl chlorosilane

Inactive Publication Date: 2007-02-07
DOW CORNING CORP
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The organosilanes shown are methyl-containing silanes, the preparation of phenylchlorosilanes is not mentioned in this method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] Preparation of phenylmethyldichlorosilane and diphenylmethylchlorosilane

[0035] The process is carried out in a continuous manner in a reactor enabling the direct feeding of the substitutes thereto. The reaction was initiated by feeding magnesium, phenyl chloride and diethyl ether to the Grignard reactor, followed by MeSiCl in the coupling reaction 3 and toluene.

[0036] Ether to phenyl chloride was fed in a 4:1 ratio and magnesium was fed at a rate used to maintain the reaction (monitored by reactor temperature profile, jacket water temperature rise, and amperage of the agitation motor). MeSiCl 3 The feed depends on the desired Ph 2 SiMeCl / PhMeSiCl 2The ratio varies to obtain 0.25 to 0.90 mol PhCl / mol MeSiCl 3 coupling ratio. Toluene was fed in a 3:1 ratio to phenyl chloride in ether.

[0037] A rotameter was inserted into the toluene feed line to control the continuous flow to obtain the target toluene concentration in diethyl ether.

[0038] After the Grig...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Processes for the preparation of phenyl Grignard reagents in co-solvents of toluene and ether and, the preparation of phenylchlorosilane intermediates using co-solvents of toluene and ether essentially in a one step process. The phenylchlorosilanes in the processes of this invention are important intermediates for the preparation of various silicone materials.

Description

technical field [0001] The invention disclosed herein relates to the preparation of phenyl Grignard reagents in a co-solvent of toluene and ether and the preparation of phenylchlorosilane intermediates in a substantially one-step process using a co-solvent of toluene and ether. The phenylchlorosilane in the method of the present invention is an important intermediate for preparing various organosilicon materials. Background technique [0002] The use of basic Grignard reagents in the art has a long history, originally consisting of the reaction of organomagnesium halides with active hydrogen-containing compounds. The reagent is prepared by combining the desired halide in pure ether with magnesium metal, without removal of the solvent, and then reacting the reagent further with an active hydrogen-containing compound. [0003] Typically, all Grignard reagent preparations are done in ether as the solvent. The reaction requires careful attention to ether volatilization, theref...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C07F3/02C07F7/08C07F7/12
CPCC07F3/02C07F7/122C07F7/08
Inventor B·T·源C·J·贝迪伯里J·P·坎纳迪
Owner DOW CORNING CORP