Abstract:
A low softening point glass composition, which is substantially free from lead, bismuth and antimony and comprises oxides of vanadium, phosphorous, tellurium and iron, a softening point of the composition being 380° C. or lower.
Abstract:
A heat transfer sheet which has a high recording sensitivity and can form image of high maximum reflection density and of high contrast is provided by containing in an ink layer of the heat transfer sheet at least one dye which has a product of an extinction coefficient (l.cm.sup.-1.g.sup.-1) and an evaporation or sublimation rate at 240.degree. C. (wt %.min..sup.-1) of at least 1.8.times.10.sup.2 (l.wt %.cm.sup.-1.g.sup.-1.min.sup.-1).
Abstract:
A low softening point glass composition, which is substantially free from lead, bismuth and antimony and comprises oxides of vanadium, phosphorous, tellurium and iron, a softening point of the composition being 380° C. or lower.
Abstract:
It is an object of the present invention to provide a high frequency-capable printed wiring board material reduced in the dielectric loss tangent, weight, thickness and cost without compromising the workability, and provide electronic components using the same. The present invention provides a prepreg obtained by using a quartz glass cloth composed of low-density quartz glass fibers as a base material and impregnating the cloth with a thermosetting resin composition having a low dielectric loss tangent, and provides electronic components using a cured product of the prepreg as an insulating layer.
Abstract:
A prepreg comprising composite woven cloth or non-woven cloth composed of glass fiber and polyolefin fiber that are a main part of the cloth and a thermosetting resin composition that gives a cured product having a low thermal expansion coefficient, wherein the thermal expansion coefficient of the cured resin composition at 50 to 100° C. is 50 ppm/° C. or less, is disclosed. A printed circuit board, multi layered circuit board, and electronic part are disclosed.
Abstract:
A wiring board comprising a copper wiring, and an insulating layer which is a cured product of a resin composition containing a compound having a carbon-carbon unsaturated double bond as a cross-linking component, the wiring board having a surface-treated layer formed on one or both sides of the copper wiring, and the surface-treated layer having a metal layer (A) containing at least one metallic component selected from the group consisting of tin, zinc, nickel, chromium, cobalt and aluminium, an oxide and/or hydroxide layer (B) of the metallic component on the metal layer (A), an amino-silane coupling agent layer (C) having an amino group in its structure on the oxide and/or hydroxide layer (B), and a vinyl-silane coupling agent layer (D) having a carbon-carbon unsaturated double bond on the amino-silane coupling agent layer (C).
Abstract:
A prepreg is thermosettable. The prepreg comprises a thermosetting resin composition A, a cured resin of the thermosetting resin composition exhibiting a dielectric tangent of 0.005 or less under 1 Hz or more, and a substrate B into which the resin A is impregnated, wherein the substrate B comprises polyolefin fiber C and a fiber D, which has a tensile strength higher than that of the polyolefin fiber C and a thermal expansion coefficient smaller than that of the fiber C, and wherein the substrate is a woven cloth and has a solubility rate into a hydrocarbon organic solvent is less than 5 wt %.
Abstract:
There is provided a varnish of a low dielectric loss tangent resin composition which is low in viscosity and excellent in storage stability. The varnish of a low dielectric loss tangent resin composition contains a thermosetting monomer (A) having a weight average molecular weight of not more than 1,000, a high polymer (B) having a weight average molecular weight of not less than 5,000, a halogen flame-retardant agent (C), a silicon dioxide filler (D), and an organic solvent (E). The average particle diameter of each the components (C) and (D) is in the range of 0.2 to 3 μm.
Abstract:
A curing low dielectric loss tangent film using a low dielectric loss tangent composition containing a polyfunctional styrene compound having excellent dielectric characteristics, and a wiring film using the same as an insulating layer are provided. The low dielectric loss tangent film contains a high molecular weight material and a crosslinking ingredient with a weight average molecular weight of 1000 or less having a plurality of styrene groups shown by the following general formula: (where R represents a hydrocarbon skeleton, R1, which may be identical or different with each other, represents a hydrogen atom or a hydrocarbon group of 1 to 20 carbon atoms, R2, R3 and R4, which may be identical or different with each other, each represents a hydrogen atom or an alkyl group of 1 to 6 carbon atoms, m represents an integer of 1 to 4, and n represents an integer of 2 or greater).
Abstract:
A semiconductor device wherein a resin containing as a cross-linking component a compound having a plurality of styrene group and represented by chemical formula [1] is used as an insulating material: where R is a hydrocarbon structure which may have a substituent group or groups, R1 is hydrogen, methyl, or ethyl, m is and integer of 1 to 4, and n is an integer of not less than 2. With this, a semiconductor device and a semiconductor package which show excellent transmission characteristics and less power consumption are provided.
Abstract translation:使用含有作为交联成分的具有多个苯乙烯基并由化学式[1]表示的化合物的树脂作为绝缘材料的半导体器件:其中R为可具有取代基或烃基的烃结构 R 1为氢,甲基或乙基,m为1〜4的整数,n为2以上的整数。由此,具有优异的透射特性和较少的半导体器件和半导体封装 提供功耗。