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Polymerizable surfactant

A technology of surfactants and polymerized monomers, used in the field of polymerizable surfactants, can solve the problems of poor emulsifying and dispersing properties, unenvironmental production processes, and high raw material prices, achieve excellent water resistance, improve mechanical stability and polymerization. The effect of stability

Inactive Publication Date: 2011-03-02
李雪松
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] These polymerizable surfactants are mainly used in the emulsion polymerization of various monomers, but they are not satisfactory in practical applications. One of the reasons is that the price of raw materials is high or the yield is low, which makes the product expensive and difficult to apply; The second is that its emulsification and dispersion performance is not as good as that of traditional surfactants; the third reason is that some synthetic reactions make the polymerizable part disappear, resulting in its lack of polymerizable properties; the fourth reason is that some products or raw materials or production processes are not environmentally friendly , making it difficult to promote

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0036] In the reactor with thermometer, stirrer, reflux tube, add 62 grams of allyl alcohol, 0.3 gram of sodium hydroxide as catalyst, then adopt dropwise to add 189 gram of isooctyl glycidyl ethers, temperature control is at 90- 100°C, the reaction time was 8 hours, and then the temperature was raised to 110°C, and excess allyl alcohol was removed under reduced pressure.

[0037] A total of 247 grams of the product of the above reaction was added to the epoxy addition kettle at a temperature of about 130°C and a pressure of 2-3kg / cm 2 , and ethylene oxide for addition reaction, the addition number is 5.

[0038] 467 grams of epoxy adducts and 97 grams of sulfamic acid were sulfonated at 120° C. for 1-5 hours to obtain product A, wherein the dimer content was about 2.1%.

Embodiment 2

[0040] Same as Example 1, except that 10 moles of ethylene oxide was added during epoxy addition to finally obtain product B, wherein the dimer content was about 2.0%.

Embodiment 3

[0042] Same as Example 1, only the amount of isooctyl glycidyl ether increases to 195 grams during the first step reaction, and the product obtained by the reaction adds 5 moles of oxirane equally, and then reacts with sulfamic acid to obtain product C, wherein The dimer content is about 6.3%.

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Abstract

The invention relates to a polymerizable surfactant which is prepared by the following steps: carrying out etherification reaction between a glycidyl ether compound and allyl alcohol or methallyl alcohol; and carrying out epoxy addition reaction on the product of the etherification reaction to obtain a nonionic surfactant with allyl or methyl allyl groups and an anion polymerizable surfactant derived from the nonionic surfactant. The polymerizable surfactant comprises two structures as shown in the formula (I) and the formula (II). In the formulas, R1 in the formula (I) and R1 in the formula (II) are alkyl, alkenyl, phenyl, alkyl phenyl, diphenyl and the like with 3-30 atoms, the R1 in the formula (I) and R1 in the formula (II) can be the same or not the same; R2 is hydrogen or methyl; A is alkylene with 2-4 carbon atoms; n is an integral number between 1 and 90; X is hydrogen or sulfate radical, phosphate radical and succinic acid radical; the polymerizable surfactant provided by the invention can provide excellent polymerization stability and mechanical stability and endows the emulsion film with excellent water resistence, cohesiveness and other properties. The formula (I) and the formula (II) are shown in the specification.

Description

technical field [0001] The invention belongs to the technical field of surface activity of organic compounds, in particular to a polymerizable surfactant with allyl or methallyl groups. Background technique [0002] In emulsion polymerization or resin dispersion system, surfactants are often used for emulsification, dispersion, wetting, foaming, washing and other functions. By using a suitable surfactant, the product quality of the application system can be improved qualitatively, but the residual surfactant in the polymerization reaction also brings a series of problems. [0003] For example, residual ionic compounds in the system can destabilize the suspended polymer and lead to undesirable flocculation. When the emulsion product is coated on the substrate to form a coating or an adhesive, the residual surfactant will affect the adhesion to the substrate, especially when the amount of surfactant is large, and the resulting film Both scrub resistance and water resistance ...

Claims

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Application Information

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IPC IPC(8): B01F17/42C08G65/326C08G65/327C08G65/334C08G65/335C08F2/26C09K23/42
Inventor 蔡洪喜
Owner 李雪松
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