3982-82-9

Usage

Flammability and Explosibility

Notclassified

InChI:InChI=1/C28H32O2Si3/c1-31(2,29-32(3,25-17-9-5-10-18-25)26-19-11-6-12-20-26)30-33(4,27-21-13-7-14-22-27)28-23-15-8-16-24-28/h5-24H,1-4H3

Upstream product

• 807-28-3 1,3-Dimethyl-1,1,3,3-tetraphenyldisiloxan 
• 75-78-5 dimethylsilicon dichloride 
• 108-90-7 chlorobenzene 
• 778-25-6 diphenylmethylsilanol 

Downstream Products

• 144-79-6 chloromethyldiphenylsilane 

Relevant academic research and scientific papers

A process for preparing 274No. organosilicon ultra-high vacuum diffusion pump oil method (by machine translation)

The invention provides a process for preparing 274No. organosilicon ultra-high vacuum diffusion pump oil of the method, the substrate 1, the substrate 2 and solvent is added to the reactor with stirring, in the 0 - 50 °C temperature adding alkali, then in the 0 - 50 °C temperature adding dimethyl dichloro silane, after adding dimethyl dichloro silane to continue in the 0 - 50 °C reaction under 10 - 40 minutes. The invention compared with the prior art, has the obvious advantages that: mild reaction conditions, less energy consumption, the process is simple, easy operation, low cost, environmental pollution is small, the product has high purity, it is expected to realize industrial large-scale production. (by machine translation)

Diffusion pump oil synthesis method

The invention relates to the chemical industry field, particularly to a diffusion pump oil synthesis method, which specifically comprises: (1) carrying out a hydrolysis reaction on methyl triethoxysilane to obtain 1,3-dimethyl-1,1,3,3-tetraethoxydisiloxane (short for compound B); (2) under a strong alkali condition, carrying out balanced telomerization on the compound B and a dimethyl ring body or methylphenyl ring body to obtain a compound D; (3) carrying out a sodium condensation reaction on the compound D, chlorobenzene and sodium to obtain the diffusion pump oil. According to the present invention, the reaction order is re-combined, and the method has advantages of low energy consumption and environmentally friendly process compared to the method in the prior art.

Production of methylphenyltrisiloxane

A process of producing a methylphenyltrisiloxane having the following general formula: STR1 wherein R1 and R2 may be the same or different and are each a methyl or phenyl group, the process comprising the step of reacting: (A) methyldiphenylsilanol, with (B) a silazane compound having a diorganosilazane unit having the following formula: STR2 wherein R1 and R2 are as defined above. According to the process, colorless and odorless methylphenyltrisiloxanes can be obtained easily, safely and economically, without any special deodorizing or decoloring step.