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Thickening agent having fine particle structure with improved feeling of use

A technology of thickener and surfactant, applied in the field of thickener, can solve the problems of difficult application of transparent dosage forms, opacity of thickener, etc., and achieve the effect of transparent appearance, uniform particle dispersion, and improved smearability.

Pending Publication Date: 2022-04-29
LG HOUSEHOLD & HEALTH CARE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, thickeners obtained by the above-mentioned precipitation polymerization method are opaque when dispersed in an aqueous phase, and thus are difficult to apply to transparent dosage forms
Therefore, there are concerns that limitations may arise when developing multiple dosage forms

Method used

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  • Thickening agent having fine particle structure with improved feeling of use
  • Thickening agent having fine particle structure with improved feeling of use
  • Thickening agent having fine particle structure with improved feeling of use

Examples

Experimental program
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preparation example Construction

[0025] The present invention relates to a kind of preparation method of thickener, it comprises:

[0026] (1) A step of preparing an oil-in-water emulsion composition comprising an aqueous phase comprising a compound represented by the following Chemical Formula 1 and a crosslinking monomer and comprising a solubility parameter (solubility parameter) of 15(MPa) 1 / 2 The oil phase of the above non-polar organic solvent;

[0027] (2) a step of heating to above 60° C. to prepare a water-in-oil type inverse emulsion composition; and

[0028] (3) A step of preparing a crosslinked polymer by adding a reaction initiator to carry out a polymerization reaction.

[0029] [chemical formula 1]

[0030]

[0031] Next, the configuration of the present invention will be specifically described.

[0032] In the present invention, the thickener is prepared by PIT (phase inversion temperature) polymerization method.

[0033] Specifically, in the present invention, the solubility coefficie...

Embodiment approach

[0071] Hereinafter, the present invention will be described in detail by way of examples. The following examples are only for illustrating the present invention, and the scope of the present invention is not limited to the following examples. The present embodiment is provided to complete the disclosure of the present invention and to fully inform the scope of the invention to those skilled in the art to which the present invention pertains, and the present invention is defined only by the scope of claims.

Embodiment 1

[0076] Water phase: Dissolve 17g of 2-acrylamido-2-methylpropanesulfonic acid and 0.5g of trimethylolpropane ethoxylate triacrylate in 63g of distilled water, then wash with ammonia (Ammonia) Neutralize to pH 7-9 in water.

[0077] Oil phase: Put 10g of polyoxyethylene (3) oleyl ether and polyoxyethylene (6) oleyl ether (Polyoxyethylene (6) oleylether) in 80g of heptane (Hepane) and mix well.

[0078] Put the water phase and oil phase into the reactor and heat to 70°C, then put 0.1g initiator 4,4'-azobis (4-cyanovaleric acid), react for 3 hours, use acetone to precipitate the thickener to get.

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Abstract

The present invention relates to a thickener having a fine particle structure and having an improved feeling of use. The thickener according to the present invention has the following advantages: even if the thickener swells in a water phase, not only the form of particles is maintained, but also the particles are uniformly dispersed, the appearance is transparent, and the stability is also high.

Description

technical field [0001] The present invention relates to a thickener having a fine particle structure with improved feeling in use. Background technique [0002] Traditional water-dispersed thickeners have a soft and thick applicability, but the finishing touch is reduced, and they have the disadvantages that the more they are used, the more sticky they will feel. [0003] Therefore, an AMPS (Acrylamidopropylmethyl Sulfonic acid)-based thickener having a silky feeling in use has been reported. It is known that the above-mentioned AMPS-based thickener is usually synthesized by a precipitation polymerization method (Patent Document 1). If synthesized by the above-mentioned precipitation polymerization method, the thickener particles exist in an amorphous state and thus are dispersed in the water phase in an irregular form and swell, thereby increasing the viscosity of the dosage form and imparting stability. However, thickeners obtained by the above-mentioned precipitation po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/46A61K8/37A61K8/06A61K8/02A61Q19/00
CPCA61K8/466A61K8/37A61K8/062A61K8/025A61Q19/00A61K2800/48A61K2800/412A61K2800/10A61K8/8158A61K2800/805A61K8/06A61K8/8188
Inventor 奉晓琎裵庭摁沈愚先
Owner LG HOUSEHOLD & HEALTH CARE LTD
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