摘要:
Disclosed herein are polysiloxane compositions that include a first polysiloxane and a second polysiloxane. The first and second polysiloxanes may be immiscible, and may exhibit differing refractive indices. The polysiloxane compositions may further include a curing agent and a catalyst. In some embodiments, the polysiloxane compositions significantly reflect light in at least the ultraviolet region of the electromagnetic spectrum. Reflectors and light emitting diode sources including the polysiloxane compositions are also disclosed.
摘要:
One aspect of the disclosure involves a rub material comprising a polymeric matrix and polymer micro-balloon filler in the matrix. In one or more embodiments of any of the foregoing embodiments, the matrix comprises a silicone. In one or more embodiments of any of the foregoing embodiments, the rub material is at least I.0 mm thick. In one or more embodiments of any of the foregoing embodiments, the silicone is selected from the group consisting of dimethyl- and fluoro-silicone rubbers and their copolymers. In one or more embodiments of any of the foregoing embodiments, the micro-balloons at least locally have a concentration of 5-50% by volume.
摘要:
To provide a negative photosensitive resin composition which is excellent in storage stability of silanol groups and which is applicable to preparation of partition walls which can maintain excellent ink repellency even after ink affinity-imparting treatment, and partition walls for an optical device using such a composition.A negative photosensitive resin composition comprising an ink repellent (A) made of a fluorosiloxane compound having a hydroxy group bonded to a silicon atom and containing fluorine atoms in a proportion of from 10 to 55 mass % based on the total amount of the compound, a photosensitive resin (B) having an acidic group and an ethylenic double bond in one molecule, a photopolymerization initiator (C) and a solvent (D), wherein the proportion of the ink repellent (A) is from 0.01 to 10 mass % based on the total solid content of the composition, and the proportion of the hydroxy groups bonded to a silicon atom derived from the ink repellent (A) is from 0.000001 to 1.0 mmol/g based on the total amount of the composition.
摘要:
An optical component includes: a plastic base; and a multilayer film disposed on at least a rear surface of both surfaces of the plastic base, wherein the multilayer film has a maximum reflectivity of 3% to 50% in a wavelength range of 380 nm to 780 nm and has an average reflectivity of 20% or less in a wavelength range of 280 nm to 380 nm.
摘要:
A fluorosilicone rubber composition is provided comprising (A) a fluorosilicone gum having an aliphatic unsaturated monovalent hydrocarbon group content of 0.03-1 mol % based on the total of monovalent hydrocarbon groups and a residual alkali metal content of up to 20 ppm, (B) reinforcing silica having a specific surface area of 50-100 m2/g, and (C) an organic peroxide catalyst. The composition is molded into silicone rubber parts which are improved in compression set even after immersion in ε-caprolactam.
摘要:
Matrixes doped with semiconductor nanocrystals are provided. In certain embodiments, the semiconductor nanocrystals have a size and composition such that they absorb or emit light at particular wavelengths. The nanocrystals can comprise ligands that allow for mixing with various matrix materials, including polymers, such that a minimal portion of light is scattered by the matrixes. The matrixes are optionally formed from the ligands. The matrixes of the present invention can also be utilized in refractive index matching applications. In other embodiments, semiconductor nanocrystals are embedded within matrixes to form a nanocrystal density gradient, thereby creating an effective refractive index gradient. The matrixes of the present invention can also be used as filters and antireflective coatings on optical devices and as down-converting layers. Processes for producing matrixes comprising semiconductor nanocrystals are also provided. Nanostructures having high quantum efficiency, small size, and/or a narrow size distribution are also described, as are methods of producing indium phosphide nanostructures and core-shell nanostructures with Group II-VI shells.
摘要:
Consumer product compositions providing enhanced hydrophobic benefit agent deposition. The benefit agent is provided as a benefit agent/deposition aid emulsion, where the benefit agent is physically adsorbed to the deposition aid before the emulsion is added to the balance of ingredients.
摘要:
The method for manufacturing contact lenses includes the following steps. First, a first siloxane macromer, a second siloxane macromer, at least one hydrophilic monomer, an initiator and a solvent are mixed to form a mixture. Then the mixture is injected into a mold of contact lens and conducted by a thermal treatment or a UV irradiating treatment to form contact lenses. The number average molecular weight of the first siloxane macromer represented by the following formula (I), is 1,000 to 10,000 and the first siloxane macromer has a cross-linking function. The second siloxane macromer is selected from the group consisting of a siloxane macromer represented by the following formula (II) and a siloxane macromer represented by the following formula (III). Wherein in formula (II), p is an integer of 4 to 80, and in formula (III), q is an integer of 4 to 80 and r is an integer of 3 to 40.
摘要:
The present application relates to organosilicones and compositions such as consumer products comprising such organosilicones, as well as processes for making and using such organosilicones and such compositions. Such compositions comprising such organosilicones are easier to formulate, and provide more economical and superior care benefits when compared to current silicone containing compositions.