Fluoro organosilicon polymer preparation and application

A polymer and silicone technology, applied in the direction of water repellent addition, etc., can solve the problems of non-oil repellency, complicated preparation process, and influence, and achieve the effect of mild reaction conditions and simple preparation process

Inactive Publication Date: 2005-01-05
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the silicone treatment agent also has a certain waterproof performance, when it is used as a waterproof and oil-repellent treatment agent, it is greatly reduced because it does not have oil repellency , but its technical points are limited to the compounding of fluorine and silicon polymers, and due to the poor compatibility of silicon polymers and fluoropolymers, the full play of the functions of the two is affected
In addition, although the fluorosilicone polymers disclosed in JP-A-5-301963 and JP-A-5-302034 have obvious waterproof and oil-repellent effects, their preparation process is complicated and the cost is too high, which limits their extensive industrialization. application

Method used

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  • Fluoro organosilicon polymer preparation and application
  • Fluoro organosilicon polymer preparation and application
  • Fluoro organosilicon polymer preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Using 1-iodoperfluorooctane as a starting material to synthesize hydrofluorosiloxane polymers

[0025] In a 5-liter stainless steel reaction flask, add 1900 grams (3.48 moles) of 1-iodoperfluorooctane, 62.70 grams (0.36 moles) of sodium dithionite, 64.50 grams (0.45 moles) of sodium hydrogen phosphate, and 2.7 liters of acetonitrile , 0.9 liters of water. Ethylene gas at 100 atmospheres is introduced into the steel tank containing this mixture. The mixture was warmed to 40-45°C and maintained for 5 hours. Excess ethylene gas was released, and the organic layer was separated, washed with water and saturated brine, and dried over anhydrous sodium sulfate. Then, the fraction collected at 125-127° C. under reduced pressure with a pressure of 45 mm of mercury was 1-iodo-1H, 1H, 2H-perfluorodecane, and 1898 grams of the product were obtained (yield 95%).

[0026] Dissolve 574.02 grams (1 mole) of the compound 1-iodo-1H, 1H, 2H-perfluorodecane obtained in the pre...

Embodiment 2

[0028] Example 2: Synthesis of Hydrofluorosiloxane Polymer Using 1-Iodoperfluorohexane as Starting Material

[0029] In a 1-liter stainless steel reaction flask, add 345 grams (0.77 moles) of 1-iodoperfluorohexane, 13.93 grams (0.08 moles) of sodium dithionite, 14.3 grams (0.30 moles) of sodium hydrogen phosphate, and 600 milliliters of acetonitrile , 200 ml of water. Ethylene gas at 30 atmospheres is introduced into the steel tank containing this mixture. The mixture was warmed to 40-45°C and maintained for 5 hours. Excess ethylene gas was released, and the organic layer was separated, washed with water and saturated brine, and dried over anhydrous sodium sulfate. Then by vacuum distillation 45mm Hg, the fraction at 90-92°C was collected, which was 1-iodo-1H, 1H, 2H-perfluorooctane, and 348 grams of product were obtained (yield 95%).

[0030] Dissolve 94.8 grams (0.2 moles) of the compound 1-iodo-1H, 1H, 2H-perfluorooctane obtained in the previous step reaction in 200 mill...

Embodiment 3

[0032] Example 3: Synthesis of Hydrofluorosiloxane Polymer Using 1-Iodoperfluorobutane as Starting Material

[0033] In a 3-liter stainless steel reaction flask, add 802.58 grams (2.32 moles) of perfluorooctyl iodide, 41.80 grams (0.24 moles) sodium dithionite, 43 grams (0.30 moles) sodium hydrogen phosphate, 1.8 liters of acetonitrile, 0.6 liters of water. Ethylene gas at a pressure of 60 atmospheres is introduced into the steel tank containing this mixture. The mixture was warmed to 40-45°C for 4 hours. Excess ethylene gas was released, and the organic layer was separated, washed with water and saturated brine, and dried over anhydrous sodium sulfate. Then, by distillation, the fraction at 142-145° C. was collected, which was 1-iodo-1H, 1H, 2H-perfluorohexane, and 820 grams of the product were obtained (yield 94%).

[0034] Dissolve 188 grams (0.5 moles) of the compound 1-iodo-1H, 1H, 2H-perfluorohexane obtained in the previous step reaction in 0.5 liters of ethanol, and ...

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PUM

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Abstract

The invention belongs to high molecular compound technology field, it discloses a manufacturing method of a kind of organic silicon polymer which contains fluorin and its application. The manufacturing method is: poly siloxane big molecular which contains silicon-hydrogen bond reacts with alkene which contains fluorin under the effect of catalyzer, then, the polymer is obtained.

Description

Technical field: [0001] The invention belongs to the technical field of polymer compounds. It specifically relates to the preparation and application of a fluorine-containing silicone polymer. Background technique: [0002] Fluorosurfactants have been widely used in various fields due to their excellent bottom surface tension, thermal stability, corrosion resistance and other application properties. Especially in terms of the surface water and oil repellent treatment of textiles, fluorine-containing surface treatment agents are currently used in large quantities. US Patent No. 5,688,309 reports a water and oil repellent treatment agent, the main component of which is a copolymer of acrylates containing long-chain fluoroalkyl groups, acrylates of alkyl groups, and unsaturated acid anhydrides. This method improves on the defect that the previous fluorine-containing waterproof and oil-repellent treatment agent has poor solubility due to high fluorine content, and as a result ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C33/62C08G77/24D06M15/657D21H21/16
Inventor 卿凤翎韦昌青
Owner DONGHUA UNIV
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