WO2018147213A1 - Particules de cellulose et leur procédé de fabrication - Google Patents

Particules de cellulose et leur procédé de fabrication Download PDF

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Publication number
WO2018147213A1
WO2018147213A1 PCT/JP2018/003765 JP2018003765W WO2018147213A1 WO 2018147213 A1 WO2018147213 A1 WO 2018147213A1 JP 2018003765 W JP2018003765 W JP 2018003765W WO 2018147213 A1 WO2018147213 A1 WO 2018147213A1
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Prior art keywords
cellulose
particles
cellulose particles
porous
less
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PCT/JP2018/003765
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English (en)
Japanese (ja)
Inventor
寛子 田中
直樹 今津
寿 御山
竹崎　宏
栄英 安蒜
平原　武彦
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東レ株式会社
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Priority to JP2018508265A priority Critical patent/JPWO2018147213A1/ja
Publication of WO2018147213A1 publication Critical patent/WO2018147213A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/73—Polysaccharides
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/12—Powdering or granulating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/22—After-treatment of expandable particles; Forming foamed products
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/02—Cellulose; Modified cellulose

Definitions

  • the present invention relates to porous cellulose particles and a method for producing the same.
  • cellulose particles are attracting attention as a scrub agent used for facial cleansers and toothpastes (see, for example, Patent Document 1).
  • the porous shape makes it easy to wet water and the like, and is expected to show a high cleaning effect while suppressing irritation to the skin.
  • it is expected to impart additional functions such as fragrances, deodorants, bactericides, and antibacterial agents to porous cellulose particles, and its use as various functional additives in cosmetics and paints is attracting attention.
  • porous particles produced by pulverizing cellulose have a problem that sufficient porosity cannot be formed.
  • Patent Documents 1 and 2 disclose porous cellulose particles. However, since the porosity is low and the surface has many irregularities, a sufficient function cannot be imparted. Furthermore, it is a spherical porous particle, and its addition amount is limited and its detergency is not sufficient for use as an additive in a scrub agent or the like.
  • the present invention enables cellulose particles to highly absorb solvents, soften and reduce irritation to the skin, and to carry a high concentration of fragrances, deodorants, bactericides, antibacterial agents and the like.
  • the object is to provide particles.
  • the present invention comprises the following configurations (1) to (8).
  • the salt containing alkali metal and / or alkaline earth metal or the agent for preventing mold generation is 1.0% by mass or less, according to any one of (1) to (4), Cellulose particles.
  • a method for producing cellulose particles comprising pulverizing a cellulose sponge.
  • the cellulose particles of the present invention are porous cellulose particles having a volume average particle diameter of 50 ⁇ m or more and 1000 ⁇ m or less and having an excellent adsorption capacity, and in particular, have a highly porous particle internal structure with a specified amount of linseed oil absorption. Have. For this reason, the ability to fully absorb a solvent is high, the irritation
  • the cellulose particles of the present invention have a smooth particle surface and absorb and swell the solvent when dispersed in the solvent, but exhibit unique rheological properties that do not increase the viscosity, and are excellent in functionality and handling as an additive. Furthermore, since it has an indefinite shape, it is possible to increase the filling rate into the medium, and to maximize the function while keeping the viscosity within the practical range, and when used as a scrub agent, it does not damage the skin. It becomes possible to give a smoother feel and higher cleaning power.
  • the present invention is porous cellulose particles (hereinafter sometimes referred to as “cellulose particles”) made of cellulose, having a volume average particle diameter of 50 ⁇ m or more and 1000 ⁇ m or less, and a linseed oil absorption of 150 mL / 100 g or more. is there.
  • cellulose particles porous cellulose particles
  • the porous cellulose particle in the present invention refers to fine particles made of cellulose.
  • Cellulose as used herein refers to a polymer represented by a repeating unit of the following structural formula, preferably having a ratio of the repeating unit of the following structural formula in the total number of repeating units of 90% or more, More preferably 95% or more, still more preferably 98% or more, particularly preferably 100%. From the viewpoint of chemical resistance, heat resistance, and processability during production, a cellulose derivative in which part or all of the hydroxyl groups are substituted may be included.
  • cellulose derivatives include cellulose ethers such as carboxymethyl cellulose, carboxyethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, and hydroxypropyl cellulose, and cellulose esters such as cellulose acetate and cellulose nitrate.
  • a mixed composition of cellulose and other resins may be used, but the mass ratio of cellulose is preferably 90% or more from the viewpoint of mechanical strength, chemical resistance, affinity with water, and the like. More preferably, it is 95% or more, more preferably 98% or more, and most preferably 100%.
  • n is the number of repetitions.
  • the porous cellulose particles in the present invention are made of cellulose, they are plant-derived environmentally low load materials that exhibit excellent chemical resistance and heat resistance.
  • known methods may be used. For example, wood is chemically treated with sodium hydroxide, sulfate, sulfite, etc. to remove impurities such as lignin, and high purity cellulose is obtained. The method of extracting is mentioned.
  • a volume average molecular weight is 10,000 or more, More preferably, it is 50,000 or more, More preferably, it is 100,000 or more. Yes, particularly preferably 500,000 or more, and most preferably 1,000,000 or more.
  • the upper limit of the volume average molecular weight is preferably 50,000,000 or less, more preferably 10,000,000 or less, and further preferably 5,000,000 or less.
  • the molecular weight measurement method of cellulose is not particularly limited, and examples thereof include the following methods.
  • Cellulose is immersed in distilled water for 24 hours, then immersed in acetone for 24 hours, further immersed in dimethylacetamide for 24 hours, and the solvent is completely removed with a vacuum dryer to obtain a solvent-substituted cellulose sample.
  • the obtained powder was dissolved in a solvent in which 8% by mass of lithium chloride was dissolved in 1,3-dimethyl-2-imidazolidinone, and the molecular weight of cellulose was measured by gel permeation chromatography (GPC). Can be measured.
  • GPC gel permeation chromatography
  • the volume average particle diameter of the porous cellulose particles in the present invention is 50 ⁇ m or more as a lower limit, preferably more than 50 ⁇ m, more preferably 70 ⁇ m or more, further preferably 90 ⁇ m or more, and more preferably 100 ⁇ m or more. Remarkably preferably over 100 ⁇ m.
  • the upper limit of the volume average particle diameter is 1000 ⁇ m or less, preferably less than 1000 ⁇ m, more preferably 800 ⁇ m or less, further preferably 600 ⁇ m or less, more preferably 500 ⁇ m or less, and particularly preferably. It is 400 ⁇ m or less, and most preferably 300 ⁇ m or less.
  • the volume average particle diameter of the porous cellulose particles is pulverized by a rotor mill, the size can be adjusted by adjusting the rotation speed and / or the screen opening size, and the rotation speed can be increased. The smaller the screen opening, the smaller the volume average particle size of the cellulose particles.
  • the size can be adjusted by adjusting the rotational speed and / or shearing force and / or the shape and number of rotors, speeding up the rotational speed and strengthening the shearing force. As the number of rotors increases, the volume average particle diameter of the cellulose particles decreases.
  • the volume average particle diameter of the porous cellulose particles in the present invention is a value calculated by measuring the diameter of 100 cellulose particles randomly from a scanning electron micrograph and calculating the volume average according to the following equation. Show. At that time, the observation with a scanning electron microscope is measured at a magnification of at least 100 times, preferably at least 300 times. At this time, when the porous cellulose particles are not true spheres, the major axis is taken as the particle diameter. Ri: particle diameter of each particle, n: number of measurements 100, Dv: volume average particle diameter.
  • the cellulose particles in the present invention are porous particles having pores inside the particles.
  • the pores of the porous cellulose particles of the present invention may be independent from each other, or may form a porous structure in which the pores are continuously connected.
  • the linseed oil absorption amount mentioned later increases and shows the outstanding solvent absorptivity, it is preferable to form the porous structure where the pores continued continuously.
  • the degree to which the porous cellulose particles take in the target is considered to affect the porosity of the fine particles, but it is difficult to directly measure the porosity of the fine particles. Therefore, as an indirect indicator of porosity, the amount of gas adsorbed per unit weight by BET, etc., and the oil absorption of linseed oil, which is a pigment test method stipulated in Japanese Industrial Standards (refined oil oil method: Japanese Industrial Standards ( JIS) K5101-13-1) or the like is used as an index.
  • JIS Japanese Industrial Standards
  • the linseed oil absorption is used as an index as the porosity of the fine particles in the present invention.
  • the oil absorption is large and the porosity is high because many functions can be imparted.
  • the porous cellulose particles of the present invention have a linseed oil absorption of 150 mL / 100 g or more, preferably 160 mL / 100 g or more, more preferably 180 mL / 100 g or more, and further preferably 200 mL / 100 g or more. More preferably, it is 250 mL / 100 g, particularly preferably 300 mL / 100 g or more, and most preferably 350 mL / 100 g or more.
  • the amount of linseed oil absorption can be adjusted by adjusting the porosity of cellulose as a raw material.
  • As a method for adjusting the porosity of cellulose there is a method of adjusting the porosity according to the size of the neutral crystal salt added to the viscose used in the production process when the cellulose sponge described later is used. The larger the neutral crystal mirabilite, the greater the porosity.
  • the magnitude relationship when pulverizing the raw material cellulose with a rotor mill, by adjusting the rotational speed, the magnitude relationship can be adjusted, the lower the rotational speed, the higher the porosity of the cellulose particles, Linseed oil absorption is increased.
  • the magnitude relationship when pulverizing with a turbo mill, the magnitude relationship can be adjusted by adjusting the rotational speed and / or shearing force, and by reducing the rotational speed and / or weakening the shearing force, Linseed oil absorption is increased.
  • porous cellulose particles in the present invention preferably contain 50% or more of particles having a smoothness of 0.6 or more.
  • Smoothness as used herein refers to the degree of unevenness of the outline of the particle. After selecting 30 particles randomly from a scanning electron micrograph, the major axis, minor axis and circumference are measured. The value calculated by the formula is shown.
  • the smoothness is more preferably 0.7 or more, further preferably 0.8 or more, and most preferably 0.9 or more.
  • the ratio of particles having a high smoothness of 0.6 or more is more preferably 60% or more, still more preferably 70% or more, and still more preferably 80% or more.
  • the smoothness of the porous cellulose particles and the ratio of the particles having a smoothness of 0.6 or more can be adjusted by the grinding method when the porous cellulose particles are produced by grinding.
  • the medium By making the shape of the porous cellulose particles in the present invention into an indefinite shape, the medium can be highly filled, and it is possible to impart a remarkably high function while reducing the viscosity.
  • An indefinite shape indicates a case where the sphericity is 50 or less.
  • the sphericity is preferably 50 or less, more preferably 45 or less, still more preferably 40 or less, and particularly preferably 35 or less.
  • the sphericity is calculated according to the following equation by observing cellulose particles with a scanning electron microscope, measuring the short diameter and long diameter of 30 randomly selected particles. At that time, the observation with a scanning electron microscope is carried out at a magnification of at least 100 times, preferably at least 300 times. Note that n is 30 measurements.
  • the porous cellulose particles in the present invention can be used in paints and cosmetics, are particularly useful as a scrub agent, and those having a lower sphericity are preferred because they have better polishing power. Furthermore, when using as various additives, it is preferable that the sphericity is low in that the lower the sphericity is, the higher the filling becomes possible.
  • the sphericity of the porous cellulose particles can be adjusted by adjusting the shearing force applied to the cellulose particles by adjusting the pulverization time and the shearing force applied to the cellulose particles. The stronger the power, the higher the sphericity.
  • the porous cellulose particles according to the present invention have a characteristic of absorbing and swelling a solvent, and are preferably indefinite with a sphericity of 50 or less even after swelling.
  • the sphericity of the porous cellulose particles after swelling can be calculated from an optical micrograph of a dispersion in which 1 part by mass or more of water is added and uniformly dispersed with respect to 1 part by mass of the porous cellulose particles. It is possible to select 30 cellulose particles at random, measure the major axis and minor axis, and calculate according to the following formula. In that case, the observation with an optical microscope is measured at a magnification of at least 100 times, preferably 200 times or more. Note that n is 30 measurements.
  • the bulk density of the cellulose particles in the present invention is low, and it is advantageous in that the use weight can be reduced when an addition amount of the same volume is required as compared with other particle materials.
  • the specific bulk density of the cellulose particles in the present invention is preferably 0.30 g / mL or less, more preferably 0.25 g / mL or less, and further preferably 0.20 g / mL from the viewpoint that the lower one can reduce the weight. Less than mL. If the bulk density is too low, the handleability deteriorates, so the lower limit is preferably 0.01 g / mL.
  • the bulk density of the cellulose particles in the present invention can be adjusted by adjusting the bulk density of cellulose as a raw material.
  • Examples of the raw material having a low bulk density include a cellulose sponge, which will be described later, and the bulk density of the cellulose sponge can be adjusted depending on the size of the neutral crystal salt added to the viscose used in the production process. . The larger the neutral crystal mirabilite, the lower the bulk density.
  • the bulk density in the present invention can be measured by the following method. Gently weigh 1.0 g of porous cellulose particles into a 10 mL graduated cylinder, level the surface by tapping and tapping the graduated cylinder 10 times from a height of 2 cm, and reduce the volume to 1/10 scale. The bulk density (g / mL) of the porous cellulose particles is calculated by reading.
  • the porous cellulose particles in the present invention preferably contain 1% by mass or less of a salt containing alkali metal and / or alkaline earth metal or an agent for preventing mold generation from the point of containing no impurities, and the lower limit is 0. % By mass.
  • the alkali metal is an element belonging to Group 1 of the periodic table excluding hydrogen, and refers to lithium, sodium, potassium, rubidium, cesium, and francium.
  • Alkaline earth metal is an element belonging to Group 2 of the periodic table, and refers to beryllium, magnesium, calcium, strontium, barium, and radium.
  • the salt containing an alkali metal and an alkaline earth metal refers to the above metal and its salt.
  • the agent for preventing mold generation is used as an antifungal agent when the porous cellulose particles are stored in a wet state, and examples thereof include quaternary ammonium salts and orthophenylphenol.
  • the cellulose particles do not contain a salt containing the alkali metal and / or alkaline earth metal or a chemical for preventing mold generation.
  • the alkali metal and alkaline earth metal contained in the cellulose particles can be determined by measuring by atomic absorption, ICP (high frequency inductively coupled plasma) emission spectroscopy, ICP mass spectrometry or the like.
  • the agent for preventing mold generation contained in the porous cellulose particles can be measured using liquid chromatography.
  • the following method of pulverizing the cellulose sponge can be employed.
  • cellulose sponge As a raw material, cellulose particles having higher porosity, high smoothness and low sphericity can be obtained compared to the case of using cellulose as a raw material.
  • the cellulose sponge here is a synthetic sponge made of cellulose, and there is no limitation on the shape thereof, but it is a cuboid from the viewpoint of producing cellulose particles having a desired particle size and surface smoothness by pulverization. Is preferred. Moreover, although there is no restriction
  • Synthetic sponge is a light fibrous bonded structure having the properties of an absorbent.
  • Cellulose sponge has excellent water absorption and water retention ability because cellulose has high hydrophilicity. By pulverizing this cellulose sponge, it becomes possible to make it fine while maintaining the porosity derived from the sponge, and it is possible to obtain cellulose particles having a moderately low sphericity.
  • the cellulose sponge used as a raw material is preferable as the number of bubbles and the specific gravity are lighter, since the cellulose particles obtained are more excellent in linseed oil absorption capacity and the volume change rate due to water increases.
  • the specific gravity during drying of the cellulose sponge is preferably 0.5 g / mL or less, more preferably 0.4 g / mL or less, still more preferably 0.3 g / mL or less, and still more preferably 0.2 g / mL.
  • the lower limit is preferably 0.001 g / mL.
  • geometric measurement can be used among solid density and specific gravity measuring methods (Japanese Industrial Standard (JIS) Z8807-2012) defined in Japanese Industrial Standards.
  • Viscose with reinforcing fibers added is produced from dissolved natural pulp based on cellulose.
  • Neutral crystal mirabilite is added to the viscose and mixed to prepare a mixture.
  • the mixture is pushed into a mold or discharged into a sheet form and heated and solidified to obtain a block-like or sheet-like cellulose sponge.
  • a cellulose sponge can be obtained by washing the block-like or sheet-like cellulose sponge with water, moistening, and freeze-drying.
  • the cellulose sponge preferably uses natural fibers as reinforcing fibers, and preferably includes cotton, flax, ramie, and pulp alone or in combination, and as a sponge by including these as reinforcing fibers. Increases the strength.
  • the method for producing cellulose particles of the present invention is a method of pulverizing cellulose sponge.
  • the pulverization method is not particularly limited, but pulverization by a dry method is preferable.
  • a dry method using a ball mill, a turbo mill, a rotor mill, a cutting mill, a screen mill, a roll press, an impeller mill or the like can be mentioned. You may grind with.
  • pulverization by a dry method it becomes possible to pulverize while maintaining the porosity of the cellulose sponge as a raw material, and cellulose particles having a large linseed oil absorption and a low bulk density can be obtained.
  • a freeze pulverization method in which a cellulose sponge is frozen and then pulverized by a dry method may be used.
  • a refrigerant such as a low-temperature liquefied gas.
  • porous cellulose particles having a volume average particle diameter of 50 ⁇ m or more and 1000 ⁇ m or less and a linseed oil absorption of 150 mL / 100 g or more can be efficiently obtained. be able to.
  • the inside of the particles is porous, and the cellulose particles having a low sphericity are suitable materials for facial cleansers, toothpaste scrub agents, and various functional additives.
  • volume average particle diameter (Ri) of 100 randomly selected particles was measured. ) And the volume average particle diameter (Dv) was calculated according to the following formula. In order to accurately measure the particle diameter, it is measured at a magnification of at least 100 times, preferably 300 times or more. When the particles were not true spheres, the major axis was taken as the particle diameter. Ri: particle diameter of each particle, n: number of measurements 100, Dv: volume average particle diameter.
  • n 30 measurements.
  • Example 1 (Production of porous cellulose particles)
  • Cellulose sponge (specific gravity when dried: 0.04 g / mL, cellulose sponge CA107-4W manufactured by Toray Fine Chemical Co., Ltd., sodium 0.2 mass%, magnesium 0.08 mass%, benzalkonium chloride 0.12 mass %) was cut and dried to obtain a sheet-like cellulose sponge.
  • the obtained sheet-like cellulose sponge was frozen with liquid nitrogen and pulverized using a rotor mill (PULVERISETTE 14 manufactured by Fritsch Japan Co., Ltd.) using a 4 mm sieve ring and a cutter rotation speed of 20000 rpm. Furthermore, after freezing again with liquid nitrogen, it was pulverized with a turbo mill (manufactured by Freund Turbo).
  • the volume average particle size was 100.3 ⁇ m
  • the number of particles having a smoothness of 0.6 or more was 20 out of 30 particles (66.7%)
  • the sphericity was 36. 6.
  • Linseed oil absorption was 380.4 mL / 100 g and bulk density was 0.19 g / mL.
  • Example 2 (Production of porous cellulose particles)
  • Cellulose sponge (specific gravity when dried: 0.04 g / mL, cellulose sponge CA107-4W manufactured by Toray Fine Chemical Co., Ltd., sodium 0.2 mass%, magnesium 0.08 mass%, benzalkonium chloride 0.12 mass %) was cut and dried to obtain a sheet-like cellulose sponge.
  • the obtained sheet-like cellulose sponge was compressed and flaked by a roll press (RP-150, manufactured by Seishin Enterprise Co., Ltd.). Further, pulverization was performed with an impeller mill (manufactured by Seishin Co., Ltd., IMP-250).
  • the volume average particle size was 106.0 ⁇ m
  • the number of particles having a smoothness of 0.6 or more was 28 out of 30 particles (93.3%)
  • the sphericity was 41. 0.
  • Linseed oil absorption was 186.7 mL / 100 g and bulk density was 0.22 g / mL.
  • Example 3 (Production of porous cellulose particles)
  • Cellulose sponge (specific gravity when dried: 0.04 g / mL, cellulose sponge CA107-4W manufactured by Toray Fine Chemical Co., Ltd., sodium 0.2 mass%, magnesium 0.08 mass%, benzalkonium chloride 0.12 mass %) was cut and dried to obtain a sheet-like cellulose sponge.
  • the obtained sheet-like cellulose sponge was compressed and flaked by a roll press (RP-150, manufactured by Seishin Enterprise Co., Ltd.). Furthermore, grinding was performed at 20000 rpm with a high-speed grinder (manufactured by Osaka Chemical Co., Ltd., WC-3).
  • the volume average particle diameter was 96.1 ⁇ m
  • the number of particles having a smoothness of 0.6 or more was 28 out of 30 particles (93.3%)
  • the sphericity was 49. 1
  • the linseed oil absorption was 166.4 mL / 100 g and the bulk density was 0.22 g / mL.
  • Example 4 Evaluation as a scrub agent
  • Example 5 Evaluation as a scrub agent was carried out in the same manner as in Example 4 except that the cellulose particles obtained in Example 2 were used instead of the porous cellulose particles obtained in Example 1. As a result, there was no irritation that hurt the skin, and the feel was moderate as a scrub agent. Furthermore, the stain
  • Example 6 Evaluation as a scrub agent was carried out in the same manner as in Example 4 except that the cellulose particles obtained in Example 3 were used instead of the porous cellulose particles obtained in Example 1. As a result, there was no irritation that hurt the skin, and the feel was moderate as a scrub agent. Furthermore, the stain

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  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Epidemiology (AREA)
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  • Materials Engineering (AREA)
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  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Cosmetics (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

Le but décrit par la présente invention est de fournir des particules de cellulose poreuses comprenant de la cellulose et possédant une excellente capacité d'absorption d'huile de lin. Ces particules de cellulose poreuses sont caractérisées en ce qu'elles comprennent de la cellulose, ayant un diamètre moyen de particule basé sur le volume de 50 à 1 000 µm, et ayant une quantité d'absorption d'huile élevée, avec une quantité d'absorption d'huile de lin d'au moins 150 ml/100 g. Ces particules de cellulose poreuses ont une capacité d'absorption élevée qui est suffisante pour absorber un solvant, ce qui entraîne le ramollissement des particules, et par conséquent peut réduire l'irritation de la peau et permettre d'obtenir une matière qui est utile en tant qu'agent de lavage. De plus, ces particules de cellulose sont également utiles en tant qu'additifs fonctionnels divers pour des produits cosmétiques, des peintures et similaires en raison de leur capacité à transporter des parfums, des agents désodorisants, des microbicides, des agents antimicrobiens et similaires à des concentrations élevées.
PCT/JP2018/003765 2017-02-08 2018-02-05 Particules de cellulose et leur procédé de fabrication WO2018147213A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113993940A (zh) * 2019-06-20 2022-01-28 斯道拉恩索公司 干燥的微原纤化纤维素的颗粒及其用途
US20220142900A1 (en) * 2019-03-18 2022-05-12 Daicel Corporation Particles containing cellulose acetate, cosmetic composition, and method for producing particles containing cellulose acetate

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JPH0711007A (ja) * 1993-06-22 1995-01-13 Toray Fine Chem Co Ltd 多孔質ビーズ及びその製造方法
JP2001323095A (ja) * 2000-05-12 2001-11-20 Rengo Co Ltd 多孔性セルロース粒子、機能性粒子及びこれらを用いた化粧品
JP2010539302A (ja) * 2007-09-21 2010-12-16 レンツィング アクチェンゲゼルシャフト セルロース粉末およびその製造方法
JP2013538297A (ja) * 2010-07-07 2013-10-10 スリーエム イノベイティブ プロパティズ カンパニー パターン付きエアレイド不織布繊維ウェブ、並びにこれらの製造及び使用方法
WO2016024493A1 (fr) * 2014-08-12 2016-02-18 旭化成ケミカルズ株式会社 Micropoudre de cellulose

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0711007A (ja) * 1993-06-22 1995-01-13 Toray Fine Chem Co Ltd 多孔質ビーズ及びその製造方法
JP2001323095A (ja) * 2000-05-12 2001-11-20 Rengo Co Ltd 多孔性セルロース粒子、機能性粒子及びこれらを用いた化粧品
JP2010539302A (ja) * 2007-09-21 2010-12-16 レンツィング アクチェンゲゼルシャフト セルロース粉末およびその製造方法
JP2013538297A (ja) * 2010-07-07 2013-10-10 スリーエム イノベイティブ プロパティズ カンパニー パターン付きエアレイド不織布繊維ウェブ、並びにこれらの製造及び使用方法
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