摘要:
The present invention provides a ceramide dispersion which includes (1) ceramide-containing particles which contains a ceramide, which are dispersed in an aqueous phase as an oil-phase component, and which have a volume average particle diameter from 1 nm to 100 nm; and (2) a fatty acid component which is at least one of a fatty acid having a melting temperature not higher than 30° C. or a fatty acid salt; the amount of nonionic surfactant being 0 or not more than 0.1 times the total mass of the ceramide; the amount of an ionic surfactant other than the fatty acid component being 0 or less than 0.05 times the total mass of the ceramide; and the pH being from 6 to 8.
摘要:
A water-based cosmetic that includes: (A) ceramidic compound-containing particles that include a ceramidic compound and that are dispersed as an oil phase in an aqueous phase; (B) a fatty acid component composed of at least one selected from the group consisting of fatty acids and fatty acid salts; and (C) a polyhydric alcohol component that includes a first polyhydric alcohol having an IOB of 2.2 or more and a total content in the composition of from 3% by mass to 20% by mass, and a second polyhydric alcohol having an IOB of 2.0 or less and a total content in the composition of 0% by mass or not more than 3% by mass, wherein a total content of surfactant in the composition is 0% by mass or not more than 1% by mass, and a total mass of ceramidic compound in the composition is at least 3.0 times a total mass of the fatty acid component in the composition.
摘要:
A ceramide dispersion, which includes at least: natural-ceramide-containing particles that are dispersed in an aqueous phase as an oil-phase component; and at least one surfactant, wherein the natural-ceramide-containing particles contain one or more natural ceramides in an amount of 50% by mass or higher with respect to the total mass of the oil components contained in an oil phase, and have a volume average particle diameter of from 0.5 nm to 100 nm; and the ceramide dispersion contains, in the at least one surfactant, at least one polyglycerin fatty acid ester having an HLB of from 10 to 16.
摘要:
The present invention provides a ceramide dispersion which includes (1) ceramide-containing particles which contains a ceramide, which are dispersed in an aqueous phase as an oil-phase component, and which have a volume average particle diameter from 1 nm to 100 nm; and (2) a fatty acid component which is at least one of a fatty acid having a melting temperature not higher than 30° C. or a fatty acid salt; the amount of nonionic surfactant being 0 or not more than 0.1 times the total mass of the ceramide; the amount of an ionic surfactant other than the fatty acid component being 0 or less than 0.05 times the total mass of the ceramide; and the pH being from 6 to 8.
摘要:
The present invention provides an a aqueous cosmetic preparation which includes at least a ceramide analog-containing particle that contains at least a ceramide analog and has a volume average particle diameter of from 2 nm to 150 nm, the particle is dispersed in an aqueous phase as an oil-phase component, and a fatty acid having 10 to 30 carbon atoms or salt thereof. The aqueous cosmetic preparation satisfies at least either a condition where the pH is 5.5 or more or a condition where the electric conductivity is 5.0 mS/cm or less.
摘要:
A topical composition for external use comprising: a ceramide analogue-containing particle having a particle diameter of 0.001 μm to 0.2 μm; and a water-soluble polymer. It is preferable that, further, an oil component different from the ceramide analogue is contained in an amount of 20 parts by mass or less relative to 1 part by mass of the ceramide analogue-containing particle, and the ceramide analogue-containing particle is present in the oil component.
摘要:
The present invention provides a ceramide dispersion which includes (1) ceramide-containing particles which contain a ceramide, which are dispersed in an aqueous phase as an oil-phase component and which have a volume average particle diameter from 1 nm to 100 nm, (2) a fatty acid component which is at least one of a fatty acid and a fatty acid salt, (3) a polyhydric alcohol in an amount from 5 to 20 times larger than an amount of the ceramide and (4) a polysaccharide fatty acid ester; and in which the pH is from 6 to 8.
摘要:
The present invention provides that a method for preparing an emulsion or a dispersion composed of an oily phase and an aqueous phase by contacting the oily phase with the aqueous phase, the method comprising: injecting the oily phase, which contains a water-soluble organic solvent and at least one hydrophobic functional ingredient and in which the content of a surfactant is approximately 0.1% by mass or less based on the total mass of the oily phase, into the aqueous phase such that the Reynolds number of the oily phase immediately before contact with the aqueous phase is approximately 1,000 or more, and that foodstuffs, a skin external and a medicament which contain an emulsion or a dispersion prepared by the method described above.
摘要:
According to the present invention, there is provided a curable composition, containing a compound (A) having at least one ethylenically unsaturated double bond, a photopolymerization initiator (B), a coloring agent (C), an alkali-soluble resin (D), and a compound (E) having in the molecule a partial structure of urethane, amide or urea.
摘要:
A heat sensitive recording material comprising a support and a heat sensitive recording layer containing a diazonium salt compound disposed on the support, wherein a compound represented by following formula (1) is contained in the heat sensitive recording material, as well as a microcapsule containing a diazonium salt compound and the compound represented by the following formula (1): in which R1 to R5 each independently represent a hydrogen atom, halogen atom or a substituted or non-substituted alkyl group, alkenyl group, aryl group, alkoxy group, or aryloxy group; R6 to R8 each independently represent a hydrogen atom or a substituted or non-substituted alkyl group or aryl group; and R1 and R7, R1 to R5, and R6 and R8 may join with each other to form a ring, providing that a ring formed by joining of R1 and R7, or R6 and R8 does not form an aromatic ring.