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Masked non-ionic surfactant, preparation method and application thereof

A non-ionic surface and active agent technology, applied in chemical instruments and methods, dissolution, chemical/physical processes, etc., can solve the problems of surfactant surface activity, emulsification performance and comprehensive balance performance to be improved, and achieve broad processing The effect of latitude, excellent performance and low production cost

Active Publication Date: 2008-01-09
JIANGSU MAYSTA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Simultaneously, the relative molecular weight of these copolymers in the prior art is no more than 3000, and the end-capping rate is only 90%. Because the end-capping rate of polyether decreases slightly with the increase of its molecular weight, if the molecular weight is increased, its capping In addition, the surface activity, emulsification performance and comprehensive balance performance of these surfactants need to be improved

Method used

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  • Masked non-ionic surfactant, preparation method and application thereof
  • Masked non-ionic surfactant, preparation method and application thereof
  • Masked non-ionic surfactant, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A) Add 5.8g of allyl alcohol, 150g of ethylene oxide and 100g of propylene oxide into the reactor, in the presence of 0.0025g of bimetallic catalyst hexacyanocobaltate zinc compounds, the pressure is ≤0.2Mpa, and the reaction temperature is 115°C React for 5 hours under the same conditions to obtain acryl-terminated polyether; then add 2.0g of sodium hydroxide, raise the temperature to 120°C under normal pressure and keep it warm for 3 hours, then carry out vacuum distillation, then cool the material to 75°C, and add excess chlorine methane and control the pressure to ≤0.4Mpa, adjust the pH to 5.2, and filter the material to obtain the modified polyether R1. Adjust the ratio of materials to prepare modified polyether R2;

[0037] B) react octamethylcyclotetrasiloxane, hydrogen-containing silicone oil, and hexamethyldisiloxane under the action of sulfuric acid at a reaction temperature of 70°C for 5 hours to obtain polysiloxane (II), wherein The molar ratio between octa...

Embodiment 2

[0047]A) Add 5.8g of allyl alcohol, 200g of ethylene oxide and 100g of propylene oxide into the reactor, in the presence of 0.003g of bimetallic catalyst hexacyanocobaltate zinc compounds, the pressure is ≤0.2Mpa, and the reaction temperature is 100°C React under the conditions for 6 hours to obtain acryl-terminated polyether; then add 3.5g of sodium hydroxide, raise the temperature to 125°C under normal pressure and keep it warm for 3 hours, then carry out vacuum distillation, then cool the material to 70°C, and add methyl chloride And control the pressure ≤ 0.4Mpa and keep it warm for 1 hour, then adjust the pH to 5-6, and filter the material to obtain the modified polyether R1. Adjust the ratio of materials to prepare modified polyether R2;

[0048] B) react octamethylcyclotetrasiloxane, hydrogen-containing silicone oil, and hexamethyldisiloxane under the action of sulfuric acid at a reaction temperature of 75°C for 4 hours to obtain polysiloxane (II), wherein The molar ra...

Embodiment 3

[0058] A) Add 5.8g of allyl alcohol, 200g of ethylene oxide and 100g of propylene oxide into the reactor, in the presence of 0.003g of bimetallic catalyst hexacyanocobaltate zinc compounds, the pressure is ≤0.2Mpa, and the reaction temperature is 130°C Under the conditions of reaction for 4 hours, acryl-terminated polyether was obtained; then 3.5g of sodium hydroxide was added, the temperature was raised to 125°C under normal pressure and kept for 3 hours, and then vacuum distillation was carried out, and then the material was cooled to 70°C, and excess chlorine was added Butane and control the pressure ≤ 0.4Mpa and keep it warm for 1 hour, adjust the pH to 5-6, and filter the material to obtain the modified polyether R1. Adjust the ratio of materials to prepare modified polyether R2;

[0059] B) react octamethylcyclotetrasiloxane, hydrogen-containing silicone oil, and hexamethyldisiloxane under the action of sulfuric acid at a reaction temperature of 75°C for 4 hours to obtai...

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Abstract

The present invention discloses one kind of terminated non-ionic surfactant and its preparation process and application. The surfactant is allyl terminated polyether with molecular weight controllable in 700-9500 Da, narrow molecular weight distribution and high reaction activity. It has methylol terminating rate up to 95 % and double bond terminating rate up to 93 %, and possesses structure as shown.

Description

technical field [0001] The present invention relates to a kind of surface active agent, preparation method and application thereof, more specifically relate to a kind of blocked nonionic surface active agent, preparation method and application thereof. Background technique [0002] Nonionic surfactants are a class of amphiphilic structure molecules containing hydroxyl groups or ether bonds as hydrophilic groups. Nonionic surfactants do not ionize in water, so they have good solubility in water and organic solvents, excellent emulsifying properties, high chemical stability in solutions, and have a wide range of uses. Nonionic surfactants can be divided into polyoxyethylene type, polyol type, alkanolamide, alkyl polyglycoside and other types according to their hydrophilic group. Allyl-terminated polyether has good hydrophilicity and superior emulsifying ability. It is a nonionic surfactant with excellent performance. Because its two ends are double bonds and hydroxyl function...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/00C09K23/00
Inventor 孙宇金一
Owner JIANGSU MAYSTA CHEM
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