Preparation method of long-chain alkyl polyether co-modified silicone oil

The technology of long-chain alkyl polyether and long-chain alkyl group is applied in the field of preparation of long-chain alkyl polyether co-modified silicone oil, which can solve the problems of low quality, inability to meet production requirements, backward synthesis process, etc. The effect of good defoaming effect, improving stability and feeling of use

Inactive Publication Date: 2016-03-23
JIANGXI BLUESTAR XINGHUO SILICONE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The products obtained by traditional synthesis methods cannot meet the production requirements. The reason is the problem of raw materials. What is more prominent is that the synthesis process is too backward, and there are generally disadvantages such as low quality, low activity, and strong odor.

Method used

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  • Preparation method of long-chain alkyl polyether co-modified silicone oil
  • Preparation method of long-chain alkyl polyether co-modified silicone oil
  • Preparation method of long-chain alkyl polyether co-modified silicone oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: First add 10 parts of hydrogen-containing silicone oil and 40 parts of allyl polyoxyethylene polyoxypropylene ether into a dry 250 mL four-necked bottle at one time, stir and heat. When the temperature in the flask reaches 50°C, add 2ppm Pt catalyst, start timing when the temperature rises to 80°C, at this time there will be smoke and reflux in the flask, and there will be more bubbles on the liquid surface. The temperature of the system gradually increased due to the exothermic reaction, and the addition reaction was controlled at 120°C. After 60 minutes, 32 parts of long-chain alkyl unsaturated olefins were added dropwise, and the temperature was maintained at 120°C. Under MPa, the temperature was gradually raised to 180°C, and the unreacted raw materials were removed to obtain a colorless and transparent product.

Embodiment 2

[0032] Example 2: Add 10 parts of hydrogen-containing silicone oil to a dry 250mL four-necked bottle at one time, stir and heat. When the temperature in the flask reaches 50°C, add 2ppm Pt catalyst, and when the temperature reaches 80°C, add 40 parts of allyl polyoxyethylene polyoxypropylene ether, and within the first 60 minutes, allyl polyoxyethylene polyoxypropylene ether and hydrogen-containing In addition reaction of silicone oil, 32 parts of long-chain alkyl unsaturated olefins were added dropwise at the last 60 minutes, and the temperature was maintained at 120°C for 12 hours. Raw material, a colorless and transparent product was obtained.

Embodiment 3

[0033] Example 3: Add 10 parts of hydrogen-containing silicone oil to a dry 250mL four-necked bottle at one time, stir and heat. When the temperature in the flask reaches 50°C, add 2ppm of Pt catalyst, and when the temperature reaches 80°C, start to add dropwise a mixture of 40 parts of allyl polyoxyethylene polyoxypropylene ether and 10 parts of long-chain alkyl unsaturated olefins, and after 60 minutes Start to add 22 parts of long-chain alkyl unsaturated olefins dropwise, maintain the temperature at 120°C for 12 hours, and then gradually raise the temperature to 180°C at -0.098MPa to remove unreacted raw materials to obtain a colorless and transparent product.

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Abstract

The invention discloses a preparation method of long-chain alkyl polyether co-modified silicone oil. The method comprises the steps of adopting hydrogen-containing silicone oil, allyl polyoxyethylene polyoxypropylene ether and long-chain alkyl unsaturated olefin as raw materials, taking Pt as a catalyst, performing hydrosilylation reaction on the raw materials in a four-necked flask by heating to 80 to 130 DEG C, gradually heating up to 180 DEG C at -0.098MPa after reacting for 8 to 16 hours, performing devolatiligation for removing the unreacted raw materials, so as to obtain the long-chain alkyl polyether co-modified silicone oil. The product can be used for higher end application fields, and can be used as a defoamer, a release agent and the like.

Description

technical field [0001] The invention relates to a preparation method of long-chain alkyl polyether co-modified silicone oil, which belongs to the technical field of chemical industry. Background technique [0002] In recent years, with the rapid development of the organosilicon industry, the development and application of new multifunctional polysiloxane products have increasingly attracted widespread attention. It is mainly used in many industries such as textiles, coatings, and daily chemicals. It is one of the important industrial additives and is known as "industrial monosodium glutamate". In this context, the development of difunctional or even multifunctional modified silicone oil has become one of the current research hotspots. [0003] Long-chain alkyl polyether co-modified silicone oil is a long-chain alkyl polyether modified polysiloxane, because the Si-H bond in the polysiloxane chain can be combined with the C=C bond in the unsaturated olefin A hydrosilylation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G81/00
CPCC08G81/00
Inventor 张磊贺志江欧阳建松
Owner JIANGXI BLUESTAR XINGHUO SILICONE CO LTD
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