Ternary zwitterionic hair holding polymer for hair and preparation method thereof

A technology for hair styling and amphoteric ions, which is applied in cosmetic preparations, hair care, pharmaceutical formulations, etc. It can solve the problems of anionic resin compatibility limitations, insufficient polymer softness, poor transparency and water solubility, etc., and achieve hand feeling Good, easy to comb, good affinity effect

Inactive Publication Date: 2011-01-26
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN 101500655A discloses a method for preparing a cationic copolymer of amine-containing acrylate and N-vinylimidazolium salt. The prepared polymer has a good affinity with hair, but because it is a cationic compound, Compatibility with anionic resins is limited
U.S. Patent 4,358,567 describes a copolymer of tertiary amine-containing (meth)acrylic acid ester type unsaturated monomers and alkyl acrylates. The haloacetate used for resin zwitterionization is a suspension of fatty alcohol Added in liquid form, the prepared polymer also has the problems of poor transparency and water solubility, and at the same time, the polymer is not flexible enough, and it is difficult to clean

Method used

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  • Ternary zwitterionic hair holding polymer for hair and preparation method thereof
  • Ternary zwitterionic hair holding polymer for hair and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 300kg of 95% ethanol to a 1000L stainless steel reactor equipped with a reflux condenser, flow-controllable high-level metering mixing tank, thermometer and stirring, turn on the reflux condenser and stir, heat up to 60°C for use;

[0024] Add 140kg of vinylpyrrolidone, 30kg of acrylic acid, 30kg of DMAEMA (dimethylaminoethyl methacrylate) and 1.5kg of phthaloyl peroxide into a stainless steel high-level metering mixing tank, mix well and set aside;

[0025] Under the condition of stirring, add the mixed reactive monomer mixed with phthalyl peroxide catalyst into the reaction kettle at a constant speed for 3 hours. Since the polymerization process is an exothermic reaction, the reaction temperature of the reaction system is strictly controlled within the range of 70±5°C;

[0026] After the feeding of the mixed reactive monomer is completed, dissolve 0.5kg of phthaloyl peroxide with 3kg of ethanol, add it to the reaction system at one time, and keep it warm for 1.5 h...

Embodiment 2

[0029] 400 kg of methanol was added to the 1000 L stainless steel reaction kettle in Example 1, and after the temperature was raised to 63° C., under stirring conditions, the reaction temperature was controlled at 70 ± 5° C., and 100 kg of vinylpyrrolidone, 50 kg of methacrylic acid, DMAPMA (N, The mixed monomer composed of N-dimethylaminopropyl methacrylamide) 50kg and 0.75kg azobisisobutyronitrile was added within 3 hours. After the addition was completed, 0.25kg azobisisobutyronitrile was used Dissolve 2kg of methanol, add it to the reaction system at one time, and keep it warm for 1.5 hours under the condition of stirring and 70±5°C; weigh 21kg of sodium chloroacetate, add it to the reaction kettle at one time, and keep it at 70±5°C Continue to stir and keep warm for 1 hour under the same conditions; measure the pH value of the reaction product with precision pH test paper, and neutralize the pH value of the reaction product to 6.6 with 30% NaOH. After the reaction was com...

Embodiment 3

[0031] In Example 1, 200 kg of industrial water was added to the 1000L stainless steel reactor. After the temperature was raised to 65° C., 120 kg of vinylpyrrolidone, 50 kg of sodium acrylate, DMAPAA (N, N-dimethylaminopropyl methacrylamide) were prepared in 3 hours. ) 30kg and 1.00kg tert-butyl hydroperoxide mixed monomer after adding, after the addition is completed, 0.33kg tert-butyl hydroperoxide is dissolved with 2kg methanol, and added to the reaction system in one go, stirring and Under the condition of 70±5℃, keep warm for 1.5 hours; add 13.5kg of chloroethanol into the reaction kettle at one time, and continue stirring for quaternization under the condition of 70±5℃ for 1 hour; measure the pH value of the reaction product with precision pH test paper , and neutralize the pH of the reaction product to 6.5 with 20% NaOH. The reaction yielded 420 kg of hair styling polymer with a solid content of 52.2%.

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Abstract

The invention relates to a ternary zwitterionic hair holding polymer for hair and a preparation method thereof. The polymer is prepared from 40-70% of vinyl pyrrole subject reactive monomers, 15-30% of functional acrylic (salt) monomers providing negative ions, and 15-30% of nitrogen-containing reactive monomers by using a micromolecule polar compound containing hydroxyl as a reaction medium and azoisobutyronitrile or organic peroxides as a catalyst through the solution polymerization of free radicals and carrying out quaternization processing on the polymer. The polymer is colorless transparent sticky liquid with complete water solubility, and is suitable for various types of hair holding products, such as a gel type, a viscous liquid type, a spray gel type, an O\W emulsion type, a W\O emulsion type, a micro-emulsion type, spray type gel water, hair spray, and the like. Hair holding products, such as gel water and the like prepared by the polymer have the advantages of excellent hair holding, easy cleaning and smoothness, good affinity with hair, and good organization.

Description

technical field [0001] The present invention relates to a ternary zwitterionic hair-setting polymer for hair styling and a preparation method thereof, in particular to a preparation method of a water-soluble polymer used in hair styling products such as jelly lotion, elastin, and hair gel . technical background [0002] Polymers used in hair styling products can generally be classified into three types: nonionic, anionic and cationic polymer resins. Non-ionic polymer resins represented by polyvinylpyrrolidone have recognized good physiological safety and styling effects, but this type of polymer is sensitive to the influence of humidity. When the humidity is low, the film formed on the hair surface is hard and brittle, easy to Shedding; when the ambient humidity is high, the film will be seriously bonded and difficult to comb. Although anionic polymer resins represented by polyacrylic acid (salt) are not easily affected by humidity, the film formed on the hair surface has ...

Claims

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Application Information

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IPC IPC(8): C08F226/10C08F220/06C08F220/34C08F220/60C08F8/00C08F2/04A61K8/81A61Q5/06
Inventor 刘莹王正平郑成
Owner GUANGZHOU UNIVERSITY
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