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Acetylene bond-containing polyether modified polysiloxane surfactant and synthetic method thereof

A surfactant, acetylenic bond polyether technology, applied in chemical instruments and methods, silicon organic compounds, transportation and packaging, etc., can solve the problems of high risk, lengthy reaction process, hydrogen embrittlement, etc., and achieve non-crosslinking polymerization. By-products, high product purity, easy industrialization

Inactive Publication Date: 2013-12-11
SHANXI BOFENG TIANDI SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Polyether-modified polysiloxane surfactants are generally prepared from allyl polyether and hydrogen-containing polysiloxane through hydrosilylation, but the current production process has shortcomings: almost inevitably The cross-linking of Si-H bonds degrades the performance, and the by-product hydrogen causes hydrogen embrittlement of the equipment
In order to prevent the cross-linking of Si-H bonds in large-scale industrial production, the following two methods are often used. ① Before hydrosilylation, the hydroxyl groups in the unsaturated polyether are first capped, which makes the reaction process lengthy and reduces the product cost. increase; ② Add a large amount of benzene solvents in the reaction, these solvents are flammable and explosive, high risk, and pollute the environment

Method used

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  • Acetylene bond-containing polyether modified polysiloxane surfactant and synthetic method thereof
  • Acetylene bond-containing polyether modified polysiloxane surfactant and synthetic method thereof
  • Acetylene bond-containing polyether modified polysiloxane surfactant and synthetic method thereof

Examples

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Effect test

Embodiment 1

[0029] Add 14.5kg of propargyl alcohol polyether and 1.8g of chloroplatinic acid catalyst into the reaction kettle, slowly heat up to 80°C for direct activation, then add 22.3kg of hydrogen-containing polysiloxane, control the temperature at 80-100°C, and react for 10 After one hour, after the reaction mixture becomes clear and transparent, continue to keep warm for a certain period of time, then cool down and discharge, and filter to obtain the product. The lowest surface tension of its 0.5% aqueous solution measured by a surface tensiometer is 20.2mN / m, and the contact angle on paraffin is 5°.

Embodiment 2

[0031] In the reaction kettle, add 13.5kg of butynediol monoethoxy ether and 1.5g of chloroplatinic acid catalyst, slowly raise the temperature to 100°C for activation for 1 hour, then add 18.6kg of hydrogen-containing polysiloxane, and control the temperature at 100°C ~120°C, after 15 hours of reaction, the reaction mixture becomes clear and transparent, continue to keep warm for a certain period of time, then cool down and discharge, and filter to obtain the product. The minimum surface tension of its 0.5% aqueous solution measured by a surface tensiometer is 20.0mN / m, and the contact angle on paraffin is 0°.

Embodiment 3

[0033] In the reaction kettle, add 19.1kg of butynediol diethoxy ether and 1.4g of rhodium chloride catalyst, slowly heat up to 120°C for activation for 2 hours, then add 25.7kg of hydrogen-containing polysiloxane, and control the temperature at 120°C ~140°C, after 6 hours of reaction, the reaction mixture becomes clear and transparent, continue to keep warm for a certain period of time, then cool down and discharge, and filter to obtain the product. The minimum surface tension of its 0.5% aqueous solution measured by a surface tensiometer is 21.5mN / m, and the contact angle on paraffin is 10°.

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Abstract

The invention relates to an acetylene bond-containing polyether modified polysiloxane surfactant and a synthetic method thereof. The synthetic method comprises the following steps of adding a catalyst in an acetylene bond-containing polyether; activating for 0-3 h at a temperature of 80-140 DEG C; dropwise adding hydrogen-containing polysiloxane; reacting for 6-20 h; and filtering to obtain transparent liquid with a color ranging from light yellow to red brown. The transparent liquid is the acetylene bond-containing polyether modified polysiloxane surfactant. The polyether modified polysiloxane surfactant is prepared by a direct hydrosilylation method without solvent by using the acetylene bond-containing polyether and the hydrogen-containing polysiloxane. The method is simple in process, and can be easily industrialized. No solvent is used in the reaction process; and the purity of a product is high, without crosslinked polymer by-products.

Description

technical field [0001] The invention relates to a silicone surfactant and a synthesis method thereof, in particular to an alkyne bond-containing polyether modified polyoxyalkylene surfactant and a synthesis method thereof, belonging to the technical field of synthesis of silicon-containing surfactants in fine chemicals . Background technique [0002] Silicone surfactants endow them with unique properties due to their unique molecular structure, such as significantly reducing the surface tension to about 21mN / m, and having excellent wetting ability, etc. These unique properties make it widely used in many fields such as polyurethane foam products, textiles, paints and coatings, cosmetics and pesticides. At present, the most widely used silicone surfactant in industry is polyether-modified polysiloxane surfactant (polyether-modified silicone oil). [0003] Polyether-modified polysiloxane surfactants are generally prepared from allyl polyether and hydrogen-containing polysilo...

Claims

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Application Information

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IPC IPC(8): B01F17/54B01F17/42C07F7/08C08F283/12C08G77/20C08G65/00C09K23/54C09K23/42
Inventor 屈文山王国永
Owner SHANXI BOFENG TIANDI SCI & TECH CO LTD
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