Hydrophobic alginic acid particle group and method for producing same

A technology of alginic acid and hydrophobicity, which is applied in the direction of alginic acid coatings, pharmaceutical formulations, and cosmetic preparations, etc., which can solve the problems of performance degradation, discomfort, and poor compatibility, and achieve less foreign matter, excellent tactility, and high The effect of efficiency

Pending Publication Date: 2021-10-29
NISSHINBO IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there is a disadvantage that although the decomposability is high in land such as soil, the solubility and decomposability in the sea are low.
On the other hand, for example, in the case of base makeup, heavy makeup, etc., if the humidity of the outside air increases, water vapor is easily absorbed, so it is easy to produce a sticky feeling due to the weather, and it may be uncomfortable depending on the user. comfortability
In addition, calcium alginate particles have high water absorption and high performance, so they are also likely to cause makeup collapse
In addition, if the water absorption is too high, the compatibility with oil agents will be poor in liquid foundations, makeup bases, etc., and product formulations and applications may be limited.
[0006] On the other hand, calcium alginate particles have the risk of deteriorating performance in fields that do not like water absorption and hygroscopicity, such as electrical materials, so their use as industrial materials is limited.

Method used

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  • Hydrophobic alginic acid particle group and method for producing same
  • Hydrophobic alginic acid particle group and method for producing same
  • Hydrophobic alginic acid particle group and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0140] [Example 1-1] Production of Particle Group A1

[0141] Each component shown below was put into a 2,000 mL flask, and it stirred for 1 hour using the stirrer, and was made to disperse|distribute.

[0142] Calcium Alginate Spherical Beads 194.0g

[0143] (manufactured by Nisshinbo Chemical Co., Ltd.: brand name Fravikafine, MV=20 μm)

[0144] Ion-exchanged water 735.0g

[0145] Ethanol 315.0g

[0146] Sodium laurate 6.0g

[0147] Next, after heating slowly in an oil bath at 95° C. for 2 hours, the solvent was removed by distillation, and the reaction solution was concentrated while performing surface treatment to perform a hydrophobizing treatment. After cooling, it was repeatedly centrifuged and washed with ion-exchanged water to finally prepare a 10% by mass aqueous dispersion. This dispersion liquid was spray-dried using a spray dryer (hot air temperature: 220° C.), and the target particle group A1 was obtained. The particle group A1 was observed with a scanning ...

Embodiment 1-2

[0148] [Example 1-2] Production of Particle Group A2

[0149] Each component shown below was charged in a 5,000 mL heatable container, and dispersed using a mixer.

[0150] Sodium alginate 313.6g

[0151] (manufactured by Kimika Corporation: trade name Kimika Algin ULV-L3 (40 mPa·s, 10% by mass aqueous solution))

[0152] Ion exchanged water 4260.0g

[0153] Sodium Stearoyl Glutamate 6.4g

[0154] Thereafter, it was heated to 60°C and dissolved over 2 hours to prepare a 7.0% by mass aqueous solution. Next, the above-mentioned aqueous solution was spray-dried using a spray dryer (hot air temperature: 200° C.) to obtain particle groups. The shape of the obtained particle group was observed by SEM, and it was found to be flat particles having depressions, and it was a monodisperse particle group with an MV of 7 μm in the particle size distribution.

[0155] Put 300.0 g of the obtained particle group into 300.0 g of ethanol and stir to make a 50.0% by mass ethanol dispersion,...

Embodiment 1-3

[0157] [Example 1-3] Production of Particle Group A3

[0158] Each component shown below was put into a 5,000 mL heatable container, and it stirred for 5 minutes using the homogenizer (T25 by IKA company), and it emulsified.

[0159]

[0160] A 15.0% by mass calcium chloride aqueous solution was dropped there, and stirring was performed at 50° C. for 2 hours after completion of the dropping. After stirring, it was cooled, centrifuged and washed repeatedly with ethanol and ion-exchanged water, and vacuum-dried to obtain particle groups. The obtained particle group was observed by SEM, and the shape was confirmed, and it turned out that it was a spherical particle. In addition, the result of the particle size distribution measurement: it is a monodisperse calcium alginate particle group (hereinafter also referred to as calcium alginate particle group A.) with an MV of 10 μm.

[0161] Next, each component shown below was put into a 2,000 mL flask, and it stirred for 1 hour u...

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Abstract

The present invention provides a hydrophobic alginic acid particle group which is obtained by subjecting a polyvalent metal alginate to a hydrophobization treatment, and which is configured such that the water absorption per 100 g of the particles is lower than the oil absorption per 100 g of the particles.

Description

technical field [0001] The present invention relates to hydrophobic alginic acid particle group and its production method. Background technique [0002] Microparticles are used as main materials in core industries. Synthetic resin is used as a raw material for fine particles, but in recent years, environmental pollution (marine pollution) and adverse effects on ecosystems caused by microplastics have become problems, and initiatives to reduce the generation of microplastics have begun. [0003] As a raw material of microparticles, natural polymers such as cellulose have attracted attention. However, cellulose is easy to absorb water and has a relatively large swelling property. If the swelling property is large, it is not preferable from the viewpoint of dimensional stability, touch, and moldability. In addition, there is a disadvantage that although the decomposability is high in land such as soil, the solubility and decomposability in the sea are low. [0004] Alginic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/12C08L5/04C09D105/04A61K8/73
CPCC08L5/04C09D105/04C08J3/122C08J3/24C08J2305/04A61K8/733A61Q1/02A61K2800/412C08B37/0084C08J3/128A61K8/19A61Q19/00C08J5/18
Inventor 早川和寿桥场俊文松坂惠里奈
Owner NISSHINBO IND INC
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