摘要:
A cosmetic composition comprising titanium oxide coated with one or both of silica and alumina or zinc oxide coated with one or both of silica and alumina, and a thickening polymer having a carboxyl group in the side chain, preferably a carboxyvinyl polymer, wherein when 10% by mass of silica- and/or alumina-coated titanium oxide or silica- and/or alumina-coated zinc oxide is dispersed in an aqueous solution containing 0.133% by mass of a carboxyvinyl polymer, the viscosity after the passing of 100 hours is 50% or more of the initial viscosity. A cosmetic composition comprising titanium oxide coated with one or both silica and alumina or zinc oxide coated with one or both of silica and alumina, and a thickening polymer having a carboxyl group in the side chain of the invention, can maintain emulsion stability by thickening of polymer for a long period of time and can be widely and suitably used for ultraviolet shielding cosmetic materials or the like having preparation form stability.
摘要:
To provide a cosmetic composition having excellent ultraviolet protection against both UVB and UVA, causing neither unpleasant whitening to the applied skin nor skin irritation, and ensuring good feeling on use and high safety and high stability without causing decomposition of the ingredients blended in the cosmetic material, such as organic ultraviolet absorber. A cosmetic composition obtained by using fine particulate titanium oxide and fine particulate zinc oxide each surface-treated with silica, alumina or alumina/silica and having a primary particle size of 0.01 to 0.2 μm in combination and blending titanium oxide and zinc oxide at a mass ratio of 1:4 to 2:3, wherein SPF is maintained as compared with the case where the mass ratio of titanium oxide to zinc oxide is 1:0, and when applied to a thickness of 10 μm, the whiteness W value measured using the CIE color specification system is 20 or less.
摘要:
Provided are a silica-coated mixed crystal oxide particle which has high dispersibility, excellent visible light transparency and superior ultraviolet-shielding capability and which is sufficiently reduced in the photocatalytic activity; an economical production process thereof; and an ultraviolet-shielding cosmetic material containing the silica-coated mixed crystal oxide particle, which is particularly excellent in the visible light transparency. The surface of a mixed crystal oxide particle having a BET specific surface area of 10 to 200 m2/g and containing primary particles in a mixed crystal is covered with a dense and thin film silica.
摘要:
The invention relates to (1) a cosmetic material comprising silica-coated metal oxide particles further surface-treated with a hydrophobicizing agent, and (2) metal oxide particles having a specified infrared absorption spectrum intensity ratio and refractive index which are further treated with a hydrophobicizing agent, and to a process for their production. The invention further relates to a silica-coated metal oxide sol which gives such particles, and to a process for its production. The invention can give ultraviolet-screening cosmetic materials with an excellent transparent feel, wherein the particles are satisfactorily dispersed.
摘要:
Cosmetics comprising silica-coated metal oxide powder having a thickness of the silica coating of 0.1 to 100 nm, and a photocatalytic activity as measured by tetralin auto-oxidation method of 6 mmH2O/min or less. Silica-coated metal oxide powder coated with a silica coating having an absorption peak intensity ratio I (I=I1/I2, wherein I1 is an absorption peak intensity at 1,150 to 1,250 cm−1 and I2 is an absorption peak intensity at 1,000 to 1,100 cm−1) between the infrared absorption spectra in the region of 1,150 to 1,250 cm−1 and the region of 1,000 to 1,100 cm−1 of 0.2 or more, and having a refractive index of 1.435 or more.
摘要翻译:包含二氧化硅涂层的厚度为0.1〜100nm的由二氧化硅被覆的金属氧化物粉末构成的化妆品,以及通过四氢环丁烷自动氧化法测定的6mmH 2 O /分钟以下的光催化活性。 涂覆有二氧化硅涂层的二氧化硅涂覆的金属氧化物粉末,其具有吸收峰强度比I(I = I1 / I2,其中I1是1,150至1,250cm-1处的吸收峰强度,I2是1,000至1,100的吸收峰强度 cm -1,红外线吸收光谱在1,150〜1250cm -1的范围内,1000〜1100cm -1的区域为0.2以上,折射率为1.435以上。
摘要:
There is provided a method of molding which is capable of more highly precisely molding a molded article to be molded such as a lens than conventional technologies.A molded article such as a lens array and a mold for nanoimprinting is molded by repeating multiple times a transfer step including: a transformation step of bringing a light curable composition containing a compound having a polymerizable functional group and a polymerization initiator into contact with a transfer member 62 on which a transfer shape portion shaped equally to or reversely to an aspherical lens portion 312 is formed to transform the light curable composition to the transfer shape of the transfer member 62; a curing step of irradiating at least a transformed portion of the transformed light curable composition with light by a light irradiation unit 60 to cure the light curable composition; and a separation step of separating the cured light curable composition and the transfer member.
摘要:
It is an object of the present invention to provide a curable composition capable of forming a heat-resistant cured film which is excellent in surface hardness, is good in flexibility and bending properties, and has strength and flexibility that are compatible with each other, and a cured product (film) of the composition. The curable composition includes a reactive (meth)acrylate polymer (A) having a monomer unit represented by the following formula (1), a polymerization initiator (B) and a reactive monomer(C): wherein R1 is a hydrogen atom, a methyl group or an ethyl group, R2 is a hydrogen atom or a methyl group, X1 is a straight-chain or branched hydrocarbon group of 2 to 6 carbon atoms or an alcohol residue of polyethylene glycol, polypropylene glycol or caprolactone-modified both-terminal diol, n is an integer of 2 to 4, and m is an integer of 1 to 5.
摘要:
The present invention is a curable resin composition comprising a copolymer (A) represented by the following general formula (1), silica fine particles (B), a reactive monomer (C) and a polymerization initiator (D). In the general formula (1), X is an atomic group formed by removing “k” mercapto groups from a multifunctional thiol compound having at least “k” mercapto groups; Y is a monovalent organic group derived from a copolymer formed by copolymerizing unsaturated monomers; and “k” is an integer of 3 to 10. The present invention can provide a hard coat agent which has low curing shrinkage and which has both low curing shrinkage and antiblocking properties as needed; a hard coat film and a hard-coat treated plastic substrate having high pencil hardness and low curling properties, by using this hard coat agent. XS—Y)k (1)
摘要:
An object of the present invention is to provide a reactive urethane compound having superior curability, adhesion to substrates, transparency, molecular flexibility, and mechanical properties, a curable composition containing the compound, and a cured material formed from the composition. An ethylenically-unsaturated-group containing reactive urethane compound of the present invention is represented by formula (I): wherein R1 and R2 are each independently a hydrogen atom or an alkylene group; R3 is a hydrogen atom, a alkyl group, or an aryl group; R4 is a single bond or an alkylene group; R5 is a hydrogen atom or a methyl group; R6 is an oxygen atom, a sulfur atom, or an imino group; n is 2 to 12; m is 1 to 300; and X is an aliphatic, aromatic or heterocyclic compound residue.
摘要:
An object of the present invention is to provide a curable composition which has excellent handling properties and which is able to form a cured product excellent in transparency, heat resistance, environment resistance and molding processability. The curable composition of the present invention comprises (a) silica fine particles, (b) a (meth)acrylate having at least two ethylenic unsaturated groups and no ring structure, (c) a (meth)acrylate having an ethylenic unsaturated group and an alicyclic structure, and (d) a polymerization initiator, said silica fine particles (a) are surface-treated with a silane compound (e) represented by the following general formula (1) and a silane compound (f) represented by the following general formula (2).