Vinyl siloxane grafted hydrogen-containing silicone oil and preparation method thereof

A technology of vinyl siloxane and hydrogen-containing silicon, which is applied in the research and preparation of silicone oil to achieve the effects of reducing impurities, low surface tension and improving product quality

Inactive Publication Date: 2019-08-30
GBXF SILICONES CO LTD
View PDF10 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention also aims at the problem that the existing grafted silicone oil needs to be reacted in a solvent, and provides a method for preparing vinylsiloxane grafted hydrogen-containing silicone oil, which adopts the hydrosilicon addition method in the absence of Under the condition of solvent, vinyl siloxane and hydrogen-containing silicone oil undergo grafting reaction, and finally a colorless or light yellow transparent oily viscous liquid is obtained, which is vinyl siloxane grafted hydrogen-containing silicone oil

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vinyl siloxane grafted hydrogen-containing silicone oil and preparation method thereof
  • Vinyl siloxane grafted hydrogen-containing silicone oil and preparation method thereof
  • Vinyl siloxane grafted hydrogen-containing silicone oil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] (1) Preparation of polyvinylsiloxane-platinum complex

[0051] After dissolving 2g of chloroplatinic acid hexahydrate in absolute ethanol, add 8g of vinyltriethoxysilane and 4g of sodium carbonate, stir and raise the temperature to 80°C, observe that the solution changes from red orange to yellow, continue stirring for 0.5h, and then cool to room temperature, filtered (the precipitate was washed with absolute ethanol); the filtrate was evaporated to remove the solvent, dissolved in benzene, and washed until there was no Cl in the solution - , and then evaporate the solvent under reduced pressure to obtain an oily complex, which is polyvinyltriethoxysilane-platinum complex.

[0052] (2) Preparation of polyvinylsiloxane-platinum complex catalyst with silica as carrier

[0053] Dissolve the complex compound obtained in (1) with benzene, add 20g of fumed silica, heat and stir under reflux for 8h, evaporate the solvent, and dry to obtain polyvinyltriethoxysilane- Platinum ...

Embodiment 2

[0055] (1) Preparation of polyvinylsiloxane-platinum complex

[0056] After dissolving 1.53g of chloroplatinic acid hexahydrate with absolute ethanol, add 8g of vinyltriethoxysilane and 4g of sodium carbonate, stir and raise the temperature to 80°C, observe that the solution changes from red orange to yellow, and continue stirring for 0.5h, then Cool to room temperature, filter (the precipitate is washed with absolute ethanol); the filtrate is evaporated to remove the solvent, dissolved in benzene, and washed until there is no Cl in the solution - , and then evaporate the solvent under reduced pressure to obtain an oily complex, which is polyvinyltriethoxysilane-platinum complex.

[0057] (2) Preparation of polyvinylsiloxane-platinum complex catalyst with silica as carrier

[0058] Dissolve the complex compound obtained in (1) with benzene, add 20g of fumed silica, heat and stir under reflux for 8h, evaporate the solvent, and dry to obtain polyvinyltriethoxysilane- Platinum ...

Embodiment 3

[0060] (1) Preparation of polyvinylsiloxane-platinum complex

[0061] After dissolving 1.17g of chloroplatinic acid hexahydrate in absolute ethanol, add 8g of vinyltriethoxysilane and 4g of sodium carbonate, stir and raise the temperature to 80°C, observe that the solution changes from red orange to yellow, then continue to stir for 0.5h, then Cool to room temperature, filter (the precipitate is washed with absolute ethanol); the filtrate is evaporated to remove the solvent, dissolved in benzene, and washed until there is no Cl in the solution - , and then evaporate the solvent under reduced pressure to obtain an oily complex, which is polyvinyltriethoxysilane-platinum complex.

[0062] (2) Preparation of polyvinylsiloxane-platinum complex catalyst with silica as carrier

[0063] Dissolve the complex compound obtained in (1) with benzene, add 20g of fumed silica, heat and stir under reflux for 8h, evaporate the solvent, and dry to obtain polyvinyltriethoxysilane- Platinum co...

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

The invention discloses vinyl siloxane grafted hydrogen-containing silicone oil and a preparation method thereof, and belongs to the technical field of organic synthesis. The vinyl siloxane grafted hydrogen-containing silicone oil is provided, and modified hydrogen-containing silicone oil is obtained by an addition reaction of a C=C bond with a Si-H bond. The vinyl siloxane grafted hydrogen-containing silicone oil and the preparation method thereof are also provided, and the method comprises the following steps: first stirring hydrogen-containing silicone oil and performing slow heating; thensequentially adding a solid platinum-containing catalyst and vinyl siloxane, and carrying out a reaction at a constant temperature for a period of time; and finally performing cooling, and filtering out the platinum-containing solid catalyst to obtain the vinyl siloxane grafted hydrogen-containing silicone oil. In the preparation reaction system, preferably the platinum content accounts for 0.02-0.06% of the mass of the hydrogen-containing silicone oil, and preferably the molar ratio of the C=C bond in the vinyl siloxane to the Si-H bond in the hydrogen-containing silicone oil is (1-1.05):1; and the vinyl siloxane grafted hydrogen-containing silicone oil with high viscosity and low hydrogen content can be obtained under reactive solvent-free conditions.

Description

technical field [0001] The invention relates to a vinyl siloxane-grafted hydrogen-containing silicone oil and a preparation method thereof, belonging to the technical field of research and preparation of silicone oil. Background technique [0002] Vinyl siloxane has a C=C double bond structure, and acts as a coupling agent and a crosslinking agent. It can be used for crosslinking polymers, and can also be used as surface treatment, coatings and fillers, sealants, hydrophobic agent etc. Hydrogen-containing silicone oil has good low-temperature film-forming properties, weather resistance, hydrophobicity, heat resistance, insulation and physiological inertness, etc., but has poor compatibility with other organic solvents and water. In order to expand the application of silicone oil, through the The Si-H bond contained in it is grafted and modified to introduce specific functional groups, which can endow it with more new properties. [0003] In the preparation method of modifi...

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 Applications(China)
IPC IPC(8): C08G77/32C08G77/12
CPCC08G77/12C08G77/32
Inventor 孙佳丽邱小魁陈峰
Owner GBXF SILICONES CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap