Abstract:
he colnr .Mnanse ftv ofan LED c.hip wich a nhosphorco•ntai nbc resin sheet obtained byring the phosphor-cents resin sheet Lo Ine LED chip, improve the ease of production, and improve the sfoofee ofLfeCdOM an de in vided ie a resin sheet laminateorovWded with a ohs -containi resin -hoot racube material, wherein the phosphor-containing resin sheet is ad into a urallisi,
Abstract:
A phosphor-containing cured silicone which comprises a cured silicone that has a structure represented by general formula (1) and/or (2) and that comprises units represented by general formula (3) and/or (4) and which further contains a phosphor and particles that comprise units represented by general formula (3) and/or (4); a process for the production of the phosphor -containing cured silicone; a phosphor-containing silicone composition for the production of the phosphor-containing cured silicone; and a phosphor-containing silicone composition precursor for the production of the phosphor-containing cured silicone. In general formulae (1) to (4), R1 to R3 are each hydrogen, methyl, ethyl or propyl; X is methylene, dimethylene or trimethylene; and R4 to R6 are each a substituted or unsubstituted monovalent hydrocarbon group, and may be the same or different.
Abstract:
Provided is a precursor for a direct printing-type waterless lithographic printing plate which shows high sensitivity not only immediately after the production of the precursor but also after the passage of time. A precursor for a direct printing-type waterless lithographic printing plate, which at least comprises a heat-sensitive layer and a silicone rubber layer that are laminated on a substrate in this order, wherein said heat-sensitive layer comprises a liquid foam which contains a liquid having a boiling point within a range of 210-270oC. A method for producing a precursor for a direct printing-type waterless lithographic printing plate, at least comprising: a step for applying a heat-sensitive layer composition solution, which contains a solvent having a solubility parameter of 17.0 (MPa)1/2 or less and a boiling point within a range of 210-270oC and a solvent having a solubility parameter exceeding 17.0 (MPa)1/2, onto a substrate optionally provided with a resin layer laminated thereon; a step for drying said heat-sensitive layer composition solution to form a heat-sensitive layer; and a step for applying a silicone rubber layer composition onto said heat-sensitive layer to form a silicone rubber layer.
Abstract:
A phosphor-containing sheet having a storage modulus of 0.1 MPa or more at 25°C and a storage modulus of less than 0.1 MPa at 100°C, wherein a resin main component of the phosphor-containing sheet is a crosslinked product formed by subjecting a crosslinkable silicone composition containing a specific composition to a hydrosilylation reaction. This phosphor-containing sheet provides a phosphor sheet having good shapability and high adhesive power as a phosphor sheet bonded to an LED chip as a wavelength conversion layer.
Abstract:
The present invention is a sheet used for LED encapsulant, etc. , with the objective of providing a sheet with excellent light resistance or of providing a phosphor sheet in which the optical properties thereof are not impaired and which exhibits excellent film thickness uniformity even when comprising large-sized phosphor particles in high concentration. The constitution of the present invention is, in one embodiment, a phosphor sheet in which the content of phosphor is 53 weight% or more of the total sheet, and in another embodiment, a phosphor sheet characterized by comprising at least a silicone resin, a phosphor and silicone fine particles.
Abstract:
PROBLEM TO BE SOLVED: To obtain a waterless lithographic printing plate superior in image reproducibility and storage stability and good in printing durability by incorporating an acetone-pyrogallol resin having quinonediazido groups and a polyurethane resin having hydroxy groups and by forming a cross-linked structure with an isocyanat compound in a photosensitive layer. SOLUTION: This waterless lithographic printing plate is formed by laminating a primer layer, photosensitive layer and a silicone rubber layer in this order on a substrate. The photosensitive layer contains an acetone-pyrogallol resin having quinonediazido groups and a polyurethane resin having hydroxy groups whose the glass transition temp. is
Abstract:
PROBLEM TO BE SOLVED: To obtain good reproducibility of image and excellent storage stability, by forming such a photosensitive layer that contains a specified acetone pyrogallol resin having quinonediazido groups and an org. acid and that the acetone pyrogallol resin forms a crosslinked structure. SOLUTION: This waterless lithographic printing master plate consists of at least a primer layer, photosensitive layer and silicone rubber layer formed in this order on a substrate, and the photosensitive layer contains an acetone pyrogallol resin having a structure expressed by the formula and having quinonediazido groups, and org. acid. The acetone pyrogallol resin forms a crosslinked structure. The acetone pyrogallol resin is esterified with 1,2- naphthoquinone-2-diazide-5-sulfonic chloride and the like. In the formula, X, Y and Z are independently hydroxyl groups or ester groups of sulfonic acid of quinonediazide, and n is an integer 5 to 12.