摘要:
A cosmetic and a topical skin preparation comprising a higher alcohol-modified silicone (A) with the following general formula (1) wherein R1 is, e.g., an alkyl group; P is a monovalent organic group that contains the Si—O bond or is a long-chain monovalent hydrocarbyl group; at least one Q is a higher alcohol modifying group (—(C10-C30)-OH); and (m1+m2+m3) is a number in the range from 0 to 55 and most favorably (m1+m2+m3) is 1.
摘要:
Problem: To provide a novel organopolysiloxane copolymer that, compared with conventional polyether-modified silicones and silicone-based alternating copolymers, has superior compounding stability in cosmetics and feeling to touch improvement characteristics, can be used in combination with a wide range of cosmetic composition compounding components, and that has superior surface activity. Means To Resolve the Problems: An AB-type organopolysiloxane copolymer having a silylalkyl group having a carbosiloxane dendrimer structure on one terminal and a hydrophilic segment on the other terminal of the molecular chain; and a method for manufacturing the same. A surfactant and a powder treatment agent comprising the organopolysiloxane copolymer; and a topical composition and a cosmetic composition comprising the organopolysiloxane copolymer.
摘要:
A curable silicone composition comprising: (A) an organopolysiloxane having at least two alkenyl groups in a molecule; (B) an organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms in a molecule; (C) an adhesion promoter represented by the average unit formula; and (D) a hydrosilylation reaction catalyst. Provided is a curable silicone composition for forming a transparent cured product having high adhesion to a substrate, and an optical semiconductor device having excellent reliability made using the composition.
摘要:
The present invention relates to a curable silicone composition comprising: (A) a diorganopolysiloxane having at least two alkenyl groups in a molecule, (B) at least two types of resinous organopolysiloxanes having different mass average molecular weights, (C) an organopolysiloxane having at least two silicon-bonded hydrogen atoms in a molecule, and (D) a hydrosilylation reaction catalyst. The curable silicone composition enables the production of an optical semiconductor device in which the marked viscosity elevation of the resulting composition can be inhibited, in which the fluidity and packing properties are outstanding and that has outstanding gas barrier properties when used as a sealant, and in which the device has outstanding initial optical output efficiency even when organopolysiloxane resin is blended in order to form cured product with moderate hardness and strength.
摘要:
An adhesion promoter represented by the average formula; a curable silicone composition comprising: (A) an organopolysiloxane having at least two alkenyl groups in a molecule, (B) an organohydrogenpolysiloxane having at least two silicon atom-bonded hydrogen atoms in a molecule, (C) the adhesion promoter, and (D) a hydrosilylation reaction catalyst; and a semiconductor device in which a semiconductor element is encapsulated with a cured product of the curable silicone composition. A novel adhesion promoter, a curable silicone composition that contains the adhesion promoter and that forms a cured product having excellent adhesion to various base materials, and an optical semiconductor device that is formed from the curable silicone composition and that has excellent reliability are provided.
摘要:
A surface treatment agent comprising an organic silicon compound having: a functional group selected from a highly polar functional group, a hydroxyl group-containing group, a silicon atom-containing hydrolyzable group, or metal salt derivatives thereof bonded to silicon atoms directly or via a functional group with a valency of (n+1) (n is a number equal to 1 or greater) and having at least one structure in the molecule in which the silicon atoms are bonded to any siloxane unit represented by R 1 3 SiO 1/2 , R 1 2 SiO 2/2 , R 1 SiO 3/2 , and SiO 4/2 , wherein the refractive index at 25°C is at least 1.45.
摘要:
A curable silicone composition comprising: an organopolysiloxane represented by the average unit formula: (R13—SiO1/2)a(R12SiO2/2)b(R2SiO3/2)c(SiO4/2)d (wherein the R1 moieties are alkyl groups, alkenyl groups, phenyl groups, or hydrogen atoms; the R2 moieties are groups represented by R1, condensed polycyclic aromatic groups, or groups including a condensed polycyclic aromatic group, provided that at least one of the R1 and R2 moieties in the molecule is an alkenyl group or hydrogen atom and at least one R2 moiety in the molecule is a condensed polycyclic aromatic group or a group having a condensed polycyclic aromatic group; and a, b, c, and d are numbers satisfying the relationship: 0.01≦̸a≦̸0.8, 0≦̸b≦̸0.5, 0.2≦̸c≦̸0.9, 0≦̸d
摘要翻译:(R 1 3 SiO 1/2)a(R 1 2 SiO 2/2)b(R 2 SiO 3/2)c(SiO 4/2)d表示的有机聚硅氧烷,其中, R 1部分是烷基,烯基,苯基或氢原子; R 2部分是由R 1表示的基团,稠合多环芳基或包括稠合多环芳基的基团,条件是R 1中的至少一个 分子中的R 1和R 2部分为烯基或氢原子,并且分子中至少一个R 2部分为稠合多环芳族基团或具有稠合多环芳基的基团;以及a,b,c和 d是满足以下关系的数:0.01≤a≤0.8,0≤b≤0.5,0.2≤c≤0.9,0≤d<0.2和a + b + c + d = 1); 以及平均粒径为500nm以下,折射率为1.55以上的金属氧化物微粒。