Method for preparing methylchlorosilane with high boiling organosilicon
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of methylchlorosilane and dimethyldichlorosilane is applied in the field of organosilicon monomer production technology, which can solve the problems of low conversion rate and the like, and achieve the effects of improving conversion rate and good selectivity.
Inactive Publication Date: 2008-12-03
SHANDONG DONGYUE ORGANIC SILICON MATERIAL
View PDF2 Cites 10 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
This method can only crack methylchlorodisilane containing Si-Si bonds in high boilers, but cannot crack other components containing Si-O-Si and Si-C-Si in high boilers, resulting in The conversion rate is low when the whole component is used as raw material
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 1
[0023] Add 2500kg organosilicon high boiler and 50kg catalyst into the cracking kettle with packed fractionation tower. Heat up to 115°C with steam, and feed 25Nm 3 / h of hydrogen chloride gas (continuous), reaction under normal pressure. Start to react for 1 hour, continuously add high boiler 190kg / h in the cracking kettle, and simultaneously add catalyst 0.25kg / h, continuously react for 40 hours, and continuously collect condensed mixed monomers from the condenser. The conversion rate of its high boiling matter reaches 91.4%, and the main product consists of:
[0029] Add 2500kg organosilicon high boilers and 62.5kg catalyst to the cracking kettle with packed fractionation tower. Heat up to 115°C with steam, and feed 25Nm 3 / h of hydrogen chloride gas (continuous), reaction under normal pressure. Start to react for 1.2 hours, continuously add high boiler 200kg / h in the cracking kettle, and add catalyst 0.3kg / h simultaneously, continuously react for 41 hours, and continuously collect condensed mixed monomers from the condenser. The conversion rate of its high boiling matter reaches 93.7%, and the main product consists of:
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
Login to view more
Abstract
The invention relates to a method for preparing methyl chlorosilane from organosilicon high-boiling products. The method comprises the steps as follows: the whole composition of the high-boiling products which are the byproduct in the production process of dimethyl dichlorosilane as the organosilicon monomer is adopted as the raw material and reacts with hydrogen chloride in the presence of N,N-dimethylanlilne and tri-n-butylamine as a catalyst in a cracking kettle with a fractionating tower to obtain a mixed monomer mainly containing dimethyl dichlorosilane, trimethylchlorosilane, methyldichlorosilane and methyltrichlorosilane; and the mixed monomer is collected via the overhead condenser of the fractionating tower. The method can improve the conversion of the high-boiling products. The conversion is higher than 90%, the dimethyl dichlorosilane allows a selectivity of higher than 50%, and the selectivety of trimethylchlorosilane reaches 10%. The organosilicon monomer can be prepared at low cost.
Description
technical field [0001] The invention relates to a production process of organosilicon monomers, in particular to a production process for preparing methylchlorosilane by catalytic cracking by using high boilers produced in the production of dimethyldichlorosilane as raw materials. Background technique [0002] Dimethyldichlorosilane is the basic raw material of silicone, used to produce silicone oil, silicone resin, silicone rubber, etc. These products have high and low temperature resistance, weather resistance, aging resistance, electrical insulation, ozone resistance, water repellency, flame retardant, physiological inertia And many other unique properties, which cannot be compared and replaced by other organic polymer materials, so they are widely used in various fields such as aerospace, electronics, light industry, chemical industry, textile, machinery, construction, transportation, medical and health, agriculture, etc. , has become an important and indispensable new p...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more