Abstract:
PROBLEM TO BE SOLVED: To provide conductive ink which can form a circuit or the like having excellent adhesion to a substrate and can form a conductor having high film density and low electrical resistance. SOLUTION: This conductive ink is obtained by dispersing metal powder or metal oxide powder in a dispersion medium and is characterized in that the dispersion medium also contains a metal salt or a metal oxide as a film density improver for improving the film density of the conductor which is formed by using the conductive ink. One kind or a combination of two or more kinds selected from the group consisting of water, alcohols, glycols and saturated hydrocarbons having a boiling point below 300°C at normal pressures is used as a main solvent constituting the dispersion medium. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an electric insulation structure for forming an electric insulation layer which can be used for a circuit board such as a PCB, a chip carrier, or the like. SOLUTION: The electric insulation layer contains a hardened resin material and a filler in the shape of particles of a specified wt.%, and does not contain continuous fiber, semi-continuous fiber, or the like. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
An anisotropically conductive adhesive composition provides electrical conductivity between facing electrodes but maintains electric insulation laterally between adjacent electrodes and comprises (a) a cationically polymerizable monomer, such as a glycidyl epoxy resin; (b) a thermoplastic resin, essentially free of nucleophilic or metal complexing functional groups; (c) optionally, an alcohol containing material; (d) a thermally initiated catalyst system comprising: (1) a salt of an organometallic cation; (2) a cure rate enhancer; and (3) a stabilizing additive; (e) conductive particles; and (f) optionally, a silane coupling agent, wherein the adhesive compositions cure at a temperature of 120 DEG -125 DEG C.
Abstract:
PROBLEM TO BE SOLVED: To provide a prepreg that has low dielectric constant and dielectric loss tangent and flame retardancy; a laminated plate that has excellent adhesion and small surface roughness and a multilayered printed wiring board by using the laminated plate as a wiring board. SOLUTION: This resin composition comprises a crosslinking component that is represented by formula (wherein R represents a hydrocarbon skeleton, R 1 is identical or different, H or a 1-20C hydrocarbon group; R 2 , R 3 and R 4 are each identical or different, H or a 1-6C alkyl group; m is an integer of 1 through 4; n is an integer of 2 or more), a polymer with a weight-average molecular weight of ≥ 5,000, an inorganic filler with of dielectric loss tangent of ≤ 0.002 and an inorganic filler treatment agent. Further, its cured product and a prepreg, a laminated plate and a multilayered printed wiring board produced by using the composition are provided. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To obtain a laminate such as a thermosetting resin laminate, a thermosetting resin copper-clad laminate, etc., having an improved level of heat resistance and causing no bad condition such as swelling in a reflow process, etc., by impregnating a substrate such as a halogen-free phenol resin copper-clad laminate, etc., with a thermosetting resin containing no halogen-based flame retardant, heating and drying the substrate to give prepreg, piling a predetermined number of prepregs, optionally superposing a copper foil on its one side or both sides and laminating the copper foil to the substrate by heating under pressure. SOLUTION: In the laminate obtained by impregnating the substrate with the thermosetting resin containing no halogen-based flame retardant, heating and drying the substrate to give the prepreg, piling the predetermined number of the prepregs, optionally superposing a copper foil on its one side or both sides and laminating the copper foil to the substrate by heating under pressure, a substrate obtained by impregnation with a solution containing an alkoxysilane derivative and/or its condensate is used as the substrate to give the laminate. COPYRIGHT: (C)2004,JPO