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Reactive emulsifier, preparation method and application thereof

A technology of reactive emulsifiers and compounds, applied in the direction of coating, etc., can solve the problems of reduced product reactivity, high reaction temperature, and reduced effective double bond content

Active Publication Date: 2017-12-15
联泓(江苏)新材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods all require the use of basic catalysts and higher reaction temperatures, resulting in the inevitable loss of double bonds; and considering subsequent reactions such as possible alkoxylation, sulfation or phosphorylation, the effective double bond content of the reactive emulsifier will be further reduced, leading to a reduction in product reactivity

Method used

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  • Reactive emulsifier, preparation method and application thereof
  • Reactive emulsifier, preparation method and application thereof
  • Reactive emulsifier, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Using coconut oil primary amine (C12 / 14 primary amine, C) react with allyl glycidyl ether, the reaction pressure is normal pressure, the molar ratio of coconut oil primary amine and allyl glycidyl ether is 1 / 1.05, and the molar weight of coconut oil primary amine can be according to The amine value index of C product (272~285mgKOH / g) or the actual measured amine value calculation.

[0048] Weigh 200g of water up to standard ( C Coconut oil primary amine (measured total amine value 275mgKOH / g) is put into the reaction kettle, and under the protection of nitrogen, stir and heat up to 30°C. Slowly add a total of 117.56 g of allyl glycidyl ether to the reaction kettle dropwise, the dropwise addition is completed within 1 hour, continue to stir for 7 hours, lower the temperature, and take a sample of 1-1#.

Embodiment 2

[0050] With reference to the method of Example 1, the molar ratio of coconut oil primary amine and allyl glycidyl ether is 1 / 1.05. Weigh the coconut oil primary amine into the reaction kettle, stir and raise the temperature to 90°C under the protection of nitrogen. Slowly add allyl glycidyl ether dropwise to the reaction kettle, the dropwise addition is completed within 1 hour, continue to stir for 3 hours, lower the temperature, and take samples as 1-2# samples.

[0051] According to the feeding ratio of coconut oil primary amine and allyl glycidyl ether in embodiment 1 and embodiment 2, gained 1-1# sample and 1-2# sample are mainly made up of the compound of following formula (A-1) structure,

[0052]

[0053] where R 1 It is mainly an alkyl group with 8 to 16 carbon atoms, because the fatty primary amine raw material comes from natural coconut oil.

Embodiment 3

[0055] With reference to the method of Example 1, the molar ratio of coconut oil primary amine and allyl glycidyl ether is 1 / 2.0. Weigh the coconut oil primary amine into the reaction kettle, stir and raise the temperature to 30°C under the protection of nitrogen. Slowly add allyl glycidyl ether dropwise to the reaction kettle, the dropwise addition is completed within 2 hours, continue to stir for 6 hours, lower the temperature, and take samples as 1-3# samples.

[0056] According to the feeding ratio of coconut oil primary amine and allyl glycidyl ether in embodiment 3, gained 1-3# sample mainly is made up of formula (B-1) structure compound,

[0057]

[0058] where R 1 It is mainly an alkyl group with 8 to 16 carbon atoms.

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Abstract

The invention discloses a reactive emulsifier for emulsion polymerization, a preparation method and application thereof. The reactive emulsifier includes the compound(s) shown as formula (I) and / or formula (II) in the specification. The preparation method includes: carrying out ring-opening reaction on fatty primary amine and a glycidyl ether compound with unsaturated double bond, then conducting alkoxylation on the product to obtain a nonionic reactive emulsifier with a reactive double bond and an anionic reactive emulsifier derived therefrom. The emulsifier provided by the invention employs the reaction of primary amino and the glycidyl ether compound to introduce the double bond, the reaction activity and selectivity are stronger, and the reaction conditions are milder, the double bond loss in the reaction can be reduced, and the reactive double bond content of the final emulsifier product can be increased. In the process of emulsion polymerization, the emulsifier has higher reactivity with monomers, and can improve the water resistance of emulsion products more effectively.

Description

technical field [0001] The invention belongs to the field of surfactants, in particular to a high-reactivity emulsifier for emulsion polymerization and a preparation method thereof. Background technique [0002] Emulsion polymerization is a common method for preparing high-molecular-weight, water-based polymer dispersions. The obtained polymer emulsions are widely used in industrial fields such as building interior and exterior wall coatings, adhesives, and paper sizing agents. Emulsifiers refer to surfactants that can stabilize emulsions, and are widely used in food, daily necessities, chemical and other industries. In the emulsion polymerization process, the main function of the emulsifier is to provide a place for nucleation, reaction and growth of the polymer particles, to stabilize the heterogeneous polymerization reaction process, and to ensure the dispersion stability of the emulsion product during storage and transportation. However, during the film-forming process ...

Claims

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Application Information

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IPC IPC(8): C08G65/28C08F2/26C08F220/18C08F220/14C08F220/06C08F220/28C08F212/08C09D133/08
CPCC08F2/26C08F220/18C08G65/2624C09D133/08C08F220/1804C08F220/14C08F220/06C08F220/281C08F212/08
Inventor 牛林黄海朱军成李磊李方
Owner 联泓(江苏)新材料研究院有限公司
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