Application of reactive grease-based degradable surfactant

A surfactant and oil-based technology, which is applied in the application field of reactive oil-based degradable surfactants, can solve the problems of high cost and unsuitability for industrial application, and achieve the effects of low price, promotion of emulsion polymerization industry, and environmental protection

Active Publication Date: 2015-08-26
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, most reactive surfactants are not suitable for industrial applications due to their high cost.

Method used

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  • Application of reactive grease-based degradable surfactant
  • Application of reactive grease-based degradable surfactant

Examples

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preparation example Construction

[0014] A kind of synthetic method of grease-based degradable surfactant provided by the invention comprises the following steps:

[0015] 1. Hydrolyzed oil: Mix 50 parts by mass of an acid catalyst with a mass concentration of 15-35% and 30-70 parts by mass of ethanol evenly, add it to the reactor, heat up to 50-100°C, and stir for 0.5-12 hours Add 20-60 parts of fats and oils to the reactor dropwise, keep warm for 0.5-24 hours, cool to room temperature, let stand to separate layers, take the upper layer and wash it with water for 5 times to obtain fatty acid;

[0016] 2. Esterification of fatty acid and polyether: dissolve 30-100 parts by mass of the fatty acid obtained in step 1 and the polyether in equal molar parts to the fatty acid in 100 parts by mass of toluene, add it to the reactor, and drop in 0.01-0.5 parts by mass of acid Catalyst, heat up to 50-150°C while stirring, stir and react for 0.5-24 hours, after the reaction is completed, vacuumize toluene at 50-100°C, an...

Embodiment 1

[0031] Preparation of oil-based degradable surfactant

[0032]1. Hydrolyzed oil: Mix 50 grams of sulfuric acid with a concentration of 15% and 30 grams of ethanol evenly, add it to the reactor, heat it up to 60°C, and add 20 grams of soybean oil dropwise to the reactor within 1 hour while stirring , cooling to room temperature after 2 hours of insulation reaction, after completion of the reaction, stand for stratification, take the upper layer and wash with water 5 times to obtain fatty acid;

[0033] 2. Esterification of fatty acid and polyether: Dissolve 30 g of fatty acid obtained in step 1 and polyether in equimolar fraction with fatty acid in 100 g of toluene, add it to the reactor, drop 0.01 g of concentrated sulfuric acid, and heat up to 100 g while stirring. 60 ℃, stirring and reacting for 1 hour, after the completion of the reaction, vacuuming at 60 ℃ to remove toluene, and then adding 30% NaHCO dropwise 3 Aqueous solution until no more bubbles are formed. Add 60 gr...

Embodiment 2

[0038] Preparation of oil-based degradable surfactants:

[0039] 1. Hydrolyzed grease: Mix 50 grams of hydrochloric acid with a mass concentration of 20% and 50 grams of ethanol uniformly, add it to the reactor, heat it up to 70°C, and add 50 parts of lard dropwise to the reactor within 4 hours while stirring , the reaction was incubated for 2 hours and then cooled to room temperature. After the reaction was completed, the layers were left to stand for stratification, and the upper layer was washed with water for 5 times to obtain fatty acids;

[0040] 2. Esterification of fatty acid and polyether: Dissolve 30 g of fatty acid obtained in step 1 and polyether in equimolar fraction of fatty acid in 100 parts of toluene, add it to the reactor, drop 0.1 g of concentrated sulfuric acid, and heat up to 100 g while stirring. 90°C, stirring and reacting for 2 hours. After the reaction is completed, toluene is removed by vacuuming at 60°C, and then NaHCO with a mass fraction of 30% is ...

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Abstract

The invention discloses a reaction type greasy base degradable surfactant as well as a synthetic method and application thereof. Polyether blocks and unsaturated double bonds are introduced in grease, so that the prepared degradable surfactant can be used for conventional emulsion polymerization and miniemulsion polymerization, as a result, stable polymer latex can be obtained. According to the invention, the price of production raw material is low, the preparation process is simple and feasible and environment-friendly, and a new approach is provided for the preparation of biodegradable latex.

Description

[0001] This application is a divisional application of an invention patent application with an application date of July 30, 2013, an application number of 201310324478.5, and an invention title of "Reactive Grease-Based Degradable Surfactant and Its Synthetic Method and Application". technical field [0002] The invention relates to a surfactant, in particular to the application of a reactive oil-based degradable surfactant. Background technique [0003] During the preparation of polymer latex, it is usually necessary to use surfactants so that the latex particles can be stably dispersed in water. However, our recent studies have shown that even a small amount of surfactant in latex will have a great impact on the polymer film formed by latex. Due to the presence of surfactant, the polymer film is easy to absorb moisture and become white. At the same time, the surface The active agent migrates with the volatilization of water, and is enriched on the surface of the polymer fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/24C08F220/18C08F220/14C08F212/08C08J3/03C08G65/48C11C1/04C11C3/00C08F290/06
Inventor 张继林史蒂芬.J.史文森王文俊
Owner ZHEJIANG UNIV
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