摘要:
The present disclosure relates to cosmetic compositions comprising an organosilane (A) having the formula: (R1)n(R2O)(3-n)SiR3O(CH2CH2O)a(C3H6O)bR4 where n is 1, 2, or 3, a≧1, b may vary from 0 to 30, with the proviso a≧b, R1 is a hydrocarbon group containing 1 to 12 carbon atoms, R2 is hydrogen or an alkyl group containing 1 to 6 carbon atoms, R3 is a divalent hydrocarbon group containing 2 to 12 carbon atoms, R4 is hydrogen, R1, or an acetyl group; and a cosmetic ingredient (B), and optionally in a cosmetically acceptable medium.
摘要:
Provided in various embodiments are surface-modified hydrogels and hydrogel microparticles, methods for their preparation, and uses thereof for delivery of personal care and healthcare active ingredients, and agricultural active ingredients. In some embodiments, such hydrogels and hydrogel microparticles comprise surface coatings that are resistant to solvent washing and can act as barriers for the migration of water and/or water-compatible alcohols and actives soluble therein.
摘要:
A hydrophobic article includes a substrate and a nanoparticle layer disposed on the substrate and including nanoparticle agglomerates wherein the nanoparticle agglomerates have an average volume based size of at least 100 nanometers as determined using light scattering via ISO 13320. The hydrophobic article also includes a binder layer disposed on and in direct contact with the nanoparticle layer and including an oxidatively cured product of a silicon-based resin and an outermost layer that is disposed opposite the substrate and on and in direct contact with the binder layer. The hydrophobic article has a water contact angle of greater than or equal to 90 degrees as measured on the outermost layer of the hydrophobic article and determined using modified ASTM D5946-04.
摘要:
A copolymer composition is provided that is formed as the reaction product of (I) a cured polyorganosiloxane intermediate having repeating Si—O—Si units and at least one Si—OH functional group and (II) a polyfluoropolyether silane. The cured polyorganosiloxane intermediate has a surface having a water contact angle ranging from 40° to 90° as measured by ASTM 5946-04. In certain embodiments, the copolymer composition provides improved dust resistance as compared with cured polyorganosiloxanes from which the copolymer composition is formed.
摘要:
A composition is capable of curing via condensation reaction. The composition uses a new condensation reaction catalyst. The new condensation reaction catalyst is used to replace conventional tin catalysts. The composition can react to form a gum, gel, rubber, or resin.
摘要:
A curable silicone composition comprising a curable organosiloxane composition, copper-silver (Cu—Ag) core-shell particles, and hydrocarbon vehicle; the curable silicone composition being characterizable by: a concentration of the Cu—Ag core-shell particles of from 70 to 89 weight percent and a total concentration of silver of from 7.0 to 12 weight percent, all based on weight of the curable silicone composition; wherein the curable silicone composition has a concentration of the Cu—Ag core-shell particles and hydrocarbon vehicle such that the curable silicone composition remains curable to a conductive silicone material having a concentration of the Cu—Ag core-shell particles of from 88.0 to 92 weight percent and having a volume resistivity of less than 0.020 Ohm-centimeter measured according to Volume Resistivity Test Method, and a thermal conductivity of greater than or equal to 2.9 Watts per meter*Kelvin (W/(m*K)) measured according to Thermal Properties Test Method.
摘要:
A curable silicone composition comprises at least (A) an organopolysiloxane having at least two alkenyl groups in a molecule, (B) an organopolysiloxane having at least two silicon-bonded hydrogen atoms in a molecule, (C) a hydrosilylation reaction catalyst, (D) an approximately spherical silica fine powder having an average particle diameter of 50 μm or less and (E) glass fibers having an average fiber length of 1,000 μm or less and an average fiber diameter of 30 μm or less. A cured product produced by curing the curable silicone composition is also disclosed.
摘要:
A cross-linked composition comprises the reaction product of siloxanes having pendant anhydride groups and a reactant having hydroxyl and/or amine functional groups. The cross-linked composition can be of the following general formula (I): (I). Refer to formula (1) Each X can be of the following general formula (i): (i). Refer to formula (i) Each of W and W* is independently an oxygen atom or N—R, with R independently being a hydrogen atom or R1. Each of Y, R3, and R13 is an independently selected divalent group. Each of R1, R11, R4, R14, R5, and R15 is an independently selected substituted or unsubstituted hydrocarbyl group. Each of w and ww, and each of y and yy, is an independently selected integer from 0 to 1,000. Each of x and xx is an independently selected integer from 1 to 100. Typically, w and y are not simultaneously 0, and ww and yy are not simultaneously 0.
摘要:
A cosmetic composition comprising a cosmetically active ingredient in a cosmetically acceptable medium, wherein the cosmetic composition contains a silicone composition comprising (A) a hydrophobic organopolysiloxane fluid having a surface tension of from 15 to 40 mN/m and (B) a finely divided solid hydrophobic filler dispersed in the organopolysiloxane fluid (A).
摘要:
This invention relates to a method for depositing silicon carbide material onto a substrate such that the resulting substrate has a carrier lifetime of 0.5-1000 microseconds, the method comprising a. introducing a gas mixture comprising a chlorosilane gas, a carbon-containing gas, and hydrogen gas into a reaction chamber containing a substrate; and b. heating the substrate to a temperature of greater than 1000° C. but less than 2000° C.; with the proviso that the pressure within the reaction chamber is maintained in the range of 0.1 to 760 torr. This invention also relates to a method for depositing silicon carbide material onto a substrate such that the resulting substrate has a carrier lifetime of 0.5-1000 microseconds, the method comprising a. introducing a gas mixture comprising a non-chlorinated silicon-containing gas, hydrogen chloride, a carbon-containing gas, and hydrogen gas into a reaction chamber containing a substrate; and b. heating the substrate to a temperature of greater than 1000° C. but less than 2000° C.; with the proviso that the pressure within the reaction chamber is maintained in the range of 0.1 to 760 torr.