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Acrylic ester polymer surfactant and preparation method thereof

An acrylate and surfactant technology, applied in the field of acrylate polymer surfactant and its preparation, can solve the problems of unfavorable promotion and utilization, high reaction conditions, increased cost, etc., and achieves a favorable promotion and application , a wide range of effects

Inactive Publication Date: 2011-06-15
余林华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although well-defined amphiphilic polymers such as graft copolymers and block copolymers are used with fairly good results and are easy to study, the synthesis of these types of emulsifiers is almost always ionic polymerization or ring-opening Polymerization or even both have extremely harsh requirements on reaction conditions, and it is difficult to achieve such conditions under ordinary experimental conditions. Moreover, although graft and block copolymers are used as emulsifiers for emulsion polymerization, there is a relatively large theoretical research. However, it has not yet shown obvious advantages in application. An important reason is that its reaction conditions are very high, which increases the cost and limits the output, which is not conducive to industrial promotion and utilization.

Method used

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  • Acrylic ester polymer surfactant and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] According to the molar ratio of 1:1:1:6, respectively weigh methacrylic acid (MAA), stearyl methacrylate (SMA), polyethylene glycol methacrylate (PEGMA) and solvent isopropyl Alcohol, mix and stir, pour one-half of the mixture solution into a three-necked flask, add the initiator BPO, which is 1 / 100 of the sum of the three monomers, stir, and react under the conditions of 82°C constant temperature oil bath and nitrogen protection After 1.5 to 2 hours, the remaining mixture solution was dropped into the reactor through the dropping funnel within 2 to 2.5 hours, and the reaction was continued for 2.5 to 3 hours before stirring and heating were stopped. The resultant was distilled under reduced pressure for 3 h, and then dried in a vacuum oven at 40-60° C. to constant weight. The desired product was obtained in >90% yield as measured. The molecular weight, molecular weight distribution and polymer structure of the product were detected by gel permeation chromatography and...

Embodiment 2

[0024] According to the molar ratio of 2:1:1:8, respectively weigh methacrylic acid (MAA), stearyl methacrylate (SMA), polyethylene glycol methacrylate (PEGMA) and solvent isopropyl Alcohol, mix and stir, pour one-half of the mixture solution into a three-necked flask, add the initiator BPO, which is 1 / 100 of the sum of the three monomers, stir, and react under the conditions of 82°C constant temperature oil bath and nitrogen protection After 1.5 to 2 hours, the remaining mixture solution was dropped into the reactor through the dropping funnel within 2 to 2.5 hours, and the reaction was continued for 2.5 to 3 hours before stirring and heating were stopped. The resultant was distilled under reduced pressure for 3 h, and then dried in a vacuum oven at 40-60° C. to constant weight. The desired product was obtained in >90% yield as measured. The molecular weight, molecular weight distribution and polymer structure of the product were detected by gel permeation chromatography and...

Embodiment 3

[0026] According to the molar ratio of 3:1:1:10, respectively weigh methacrylic acid (MAA), stearyl methacrylate (SMA), polyethylene glycol methacrylate (PEGMA) and solvent isopropyl Alcohol, mix and stir, pour one-half of the mixture solution into a three-necked flask, add the initiator BPO, which is 1 / 100 of the sum of the three monomers, stir, and react under the conditions of 82°C constant temperature oil bath and nitrogen protection After 1.5 to 2 hours, the remaining mixture solution was dropped into the reactor through the dropping funnel within 2 to 2.5 hours, and the reaction was continued for 2.5 to 3 hours before stirring and heating were stopped. The resultant was distilled under reduced pressure for 3 h, and then dried in a vacuum oven at 40-60° C. to constant weight. The desired product was obtained in >90% yield as measured. The molecular weight, molecular weight distribution and polymer structure of the product were detected by gel permeation chromatography an...

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Abstract

The invention discloses an acrylic ester polymer surfactant and a preparation method thereof. The acrylic ester polymer surfactant is characterized in that: solution polymerization is initiated by using free radicals; benzoyl peroxide is used as an initiator; anion hydrophilic methacrylic acid (MAA), lipophilic stearyl methacrylate (SMA) and nonionic hydrophilic poly(ethylene glycol) dimethacrylate (PEGMA) are used as polymerization monomers respectively; and thus, the amphipathic polymer surfactant is synthesized. In the invention, the drawback that the demanding reaction conditions during graft copolymerization and block copolymerization increases cost and limits yield is overcome, the method is simple and convenient to implement, ensures large monomer selection and component variation range, and contributes to promotion and use.

Description

technical field [0001] The present invention relates to a polymer surfactant, in particular to a polymer surfactant composed of anionic hydrophilic methacrylic acid (MAA), lipophilic stearyl methacrylate (SMA), nonionic hydrophilic poly Ethylene glycol methacrylate (PEGMA) is synthesized into amphiphilic random copolymer Poly(MAA-co-SMA-co-PEGMA) by traditional free radical copolymerization, and the present invention also relates to said acrylate polymer surface Preparation method of active agent. Background technique [0002] Polymer surfactants, that is, amphiphilic polymers, generally refer to polymer compounds with a relative molecular mass of more than several thousand and surface active functions. They contain both hydrophilic groups and lipophilic groups. Tight helical shape, but the diameter is much smaller than that of ordinary polyelectrolytes with the same relative molecular mass. The unique structural characteristics cause microphase separation in selective sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/52C08F290/06C08F2/24C08F2/12C09K23/52
Inventor 余林华
Owner 余林华
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