Dipolytrisiloxane surfactant containing glucose amide and its preparation method

A technology of dimer trisiloxane and surfactant, which is applied in the field of dimer trisiloxane surfactant and its preparation, and achieves the effect of good spreadability and promotion of spreading

Inactive Publication Date: 2005-09-07
CHINA RES INST OF DAILY CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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And the dimeric surfactant that hydrophobic bas

Method used

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  • Dipolytrisiloxane surfactant containing glucose amide and its preparation method
  • Dipolytrisiloxane surfactant containing glucose amide and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Add 1.62kg of hexamethyldisiloxane, 2.06kg of aminoethylaminopropyldimethoxymethylsilane, and 1.82g of tetramethylammonium hydroxide into the reaction kettle, heat to dissolve, and control the temperature at 100°C. After 4 hours, the temperature was raised to 130° C. to deactivate the catalyst. Evaporate aminoethylaminopropyl trisiloxane under reduced pressure, add equimolar gluconolactone, use methanol as solvent, heat to reflux, and react for 8 hours. Then add 0.5 moles of ethylene glycol diglycidyl ether, and continue to react for 12 hours. The solvent methanol is evaporated to obtain the product. The minimum surface tension of its aqueous solution measured by K12 surface tension meter is 20.5mN / m, and the critical micelle concentration is 1.9×10 -5 mol / L, the minimum contact angle on the quartz surface is 0°.

Embodiment 2

[0023] Add 8.10kg of hexamethyldisiloxane, 2.34kg of aminoethylaminopropyldiethoxymethylsilane, and 168g of potassium hydroxide into the reaction kettle, heat to dissolve, and control the temperature at 120°C. After 5 hours of reaction, Add acetic acid to neutralize the catalyst to deactivate it, and then evaporate unreacted hexamethyldisiloxane. Evaporate aminoethylaminopropyl trisiloxane under reduced pressure, add equimolar gluconolactone, use methanol as solvent, heat to reflux, and react for 10 hours. Then add 0.5 moles of diethylene glycol diglycidyl ether, and continue to react for 12 hours. The solvent methanol is evaporated to obtain the product. The lowest surface tension of its aqueous solution measured by K12 surface tension meter is 20.6mN / m, and the critical micelle concentration is 2.9×10 -5 mol / L, the minimum contact angle on the quartz surface is 0°.

Embodiment 3

[0025] Add 16.20kg of hexamethyldisiloxane, 2.06kg of aminoethylaminopropyldimethoxymethylsilane, and 151.8g of tetrabutylphosphonium hydroxide into the reaction kettle, heat to dissolve, control the temperature at 80°C, and react for 4 hours Afterwards, the temperature was raised to 110° C. to deactivate the catalyst, and at the same time, unreacted hexamethyldisiloxane was distilled off. Evaporate aminoethylaminopropyl trisiloxane under reduced pressure, add equimolar gluconolactone, use methanol as solvent, heat to reflux, and react for 8 hours. Then add 0.5 moles of triethylene glycol diglycidyl ether, and continue to react for 12 hours. The solvent methanol is evaporated to obtain the product. The minimum surface tension of its aqueous solution measured by K12 surface tension meter is 20.7mN / m, and the critical micelle concentration is 3.3×10 -5 mol / L, the minimum contact angle on the quartz surface is 5°.

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Abstract

The invention discloses surface active agent of dextrose amido dimeric trisiloxane. It is to make ammonia-base trisiloxane under the alkali catalyzing function of HMDS and ammonia-base silane, and react with dextrose acid lactone in methanol solution to create trisiloxane containing dextrose amido, and then use tetranitro-glyceride to connect it the surface active agent containing dextrose amido dimeric trisiloxane. The surface active agent of the invention can effectively reduce the external strain of water, and the contacting angle of its hydrotropic solution is small on quartz surface. It can be used as pesticide adjuvant.

Description

technical field [0001] The present invention relates to the compound that forms silicon-containing bond in the molecule, with or without nitrogen, oxygen or carbon bonding reaction, especially relates to a kind of dipolytrisiloxane surfactant containing glucosamide group and its preparation method. Background technique [0002] Existing method for preparing glycosyl dimerization surfactant, as Castro M.J.L. (Tetrahedron Letters, 1997,38 (23), 3995) has reported by glucose and n-butanol reaction, generates butylated glycoside, protects hydroxyl with acetic anhydride, then uses Alkyl diacid chlorides link two glycosides to produce glucoside dimerized surfactants. [0003] U.S. Patent No. 4,892,806 announces that malononitrile reacts with brominated alkanes to generate 2,2-dialkylmalononitrile, which is reduced to diamine, and then reacts with gluconolactone to generate glucosamide dimerization surface active agent. [0004] The dimeric surfactants synthesized by these metho...

Claims

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Application Information

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IPC IPC(8): C09K23/22C09K23/54
Inventor 韩富张高勇张越谷惠先张国栋
Owner CHINA RES INST OF DAILY CHEM IND
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