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A kind of fluorosilicone oil and preparation method thereof

A technology of fluorosilicone oil and fluorosilicone oil, which is applied in the field of new fluorosilicone oil and its preparation, can solve the problems of poor quality, zero, and single variety of fluorosilicone oil, and achieve fast reaction speed, simple equipment and process, and product function-based The effect of high content

Active Publication Date: 2021-08-03
杭州科佳新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem of single varieties and poor quality of low-viscosity end-functional group fluorosilicone oils in the current domestic market, the present invention provides a low-viscosity, high-functional group content, high-purity fluorosilicone oil and its preparation method. Among the obtained products The content of siloxane rings is extremely low or even zero

Method used

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  • A kind of fluorosilicone oil and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0030] Add 134g MM H and 234g D 3 F, then put it in an oil bath at 20°C, add 28g of strong acidic cation exchange resin, stir and react for 4h, GC detection D 3 F conversion was 92.4%. Cool to room temperature with stirring, remove the resin by filtration, distill under reduced pressure and collect the product under the condition of 109~110℃ / 800Pa to obtain colorless and transparent hydrogen-terminated fluorosilicone oil 1,1,3,5,7,9,9- Heptamethyl-3,5,7-tris(3,3,3-trifluoropropyl)pentasiloxane, yield 87.3%. The density at 25°C is 1.11 and the refractive index is 1.373.

Embodiment 2

[0032] Add 134g MM H and 234g D 3 F, then put it in an oil bath at 30°C, add 28g of strong acidic cation exchange resin, stir and react for 2h, GC detection D 3 F conversion was 93.8%. Cool to room temperature with stirring, remove the resin by filtration, distill under reduced pressure and collect the product under the condition of 109~110℃ / 800Pa to obtain colorless and transparent hydrogen-terminated fluorosilicone oil 1,1,3,5,7,9,9- Heptamethyl-3,5,7-tris(3,3,3-trifluoropropyl)pentasiloxane, yield 90.5%.

Embodiment 3

[0034] Add 134g MM H and 234g D 3 F, then put it in an oil bath at 40°C, add 28g of strong acidic cation exchange resin, stir and react for 1h, GC detection D 3 F conversion was 91.3%. Cool to room temperature with stirring, remove the resin by filtration, distill under reduced pressure and collect the product under the condition of 109~110℃ / 800Pa to obtain colorless and transparent hydrogen-terminated fluorosilicone oil 1,1,3,5,7,9,9- Heptamethyl-3,5,7-tris(3,3,3-trifluoropropyl)pentasiloxane, yield 86.5%.

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Abstract

The invention relates to the technical field of organosilicon industry. In order to solve the problem that the low-viscosity end-functional group fluorosilicone oil in the domestic market is single in variety (mainly low molecular weight fluorosilicone oil terminated by hydroxyl groups) and the quality is not good, the invention provides a low-viscosity silicone oil. Viscosity, high functional group content, high-purity fluorosilicone oil and its preparation method, a fluorosilicone oil has a structural formula as shown in (I), the content of siloxane rings in the resulting product is extremely low, or even zero,

Description

technical field [0001] The invention relates to the technical field of organosilicon industry, in particular to a novel fluorosilicone oil and a preparation method thereof. Background technique [0002] In recent years, the introduction of fluorine-containing groups into polysiloxane has become a new research hotspot. Fluoropolymer not only has the superior heat resistance and weather resistance of general siloxane, but also overcomes the shortcomings of polydimethylsiloxane in oil resistance and poor solvent resistance. Molding agents and waterproof and antifouling finishing agents for fabrics and leather have been widely used in aircraft, automobiles, machinery, chemicals, light industry, textiles and other industrial fields. Among them, the low-viscosity terminal functional group fluorosilicone oil not only has the high and low temperature resistance and oil resistance characteristics shared by fluorosilicon materials, but also has high chemical activity due to the exist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/24C08G77/12C08G77/08
CPCC08G77/08C08G77/12C08G77/24
Inventor 胡应乾耿梦鸾张方邬继荣张国栋王华兰
Owner 杭州科佳新材料股份有限公司
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