Diphenylcyclotrisiloxane and its preparation method and application

A technology of diphenylcyclotrisiloxane and diphenylsiloxane is applied in the field of synthesis of organosilicon compounds, and can solve the problems of inability to efficiently obtain target products, poor cyclosiloxane selectivity and the like, and achieve copolymerization. The effect of good reaction effect, less impurities and simple process
CN110156826BActive Publication Date: 2021-08-31新元化学(山东)股份有限公司
2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
新元化学(山东)股份有限公司
Publication Date
2021-08-31

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to diphenylcyclotrisiloxane and its preparation method and application. Trifluoropropylmethyldichlorosilane and diphenylsilanediol are used to react trisiloxane with chlorine at both ends, and then The trisiloxane is hydrolyzed and condensed to make intramolecular cyclization, and the target product is directional prepared through two-step reactions. The method not only suppresses the occurrence of side reactions, but also greatly increases the yield of cyclotrisiloxane, and has the advantages of high efficiency, simple and convenient operation, high product purity and the like.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of synthesis of organosilicon compounds, in particular to a 1,3-dimethyl-1,3-bis(3,3,3-trifluoropropyl)-5,5-diphenylcyclotrisilane Oxy-alkane and its preparation method and application. Background technique

[0002] Fluorosilicone rubber is a special synthetic material whose main chain is silicon-oxygen structure, side chain is methyl and trifluoropropyl structure, mainly through 1,3,5-trimethyl-1,3,5-tri(3 ,3,3-Trifluoropropyl)cyclotrisiloxane (D 3 F) obtained by ring-opening polymerization. The special chemical structure of this material makes it have many unique functions. The Si-O-Si structure of the main chain gives fluorosilicone rubber flexibility and thermal stability, while the side chain structure of trifluoropropyl gives fluorosilicone rubber Good oil and solvent resistance. However, compared with methyl group, trifluoropropyl group is easy to decompose at high temperature to form fluoride, making its h...

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