Abstract:
An epoxy resin composition is disclosed which contains (A) 1-10 weight % of a polyvalent epoxy compound, (B) 1-10 weight % of a curing agent selected among cyanate compounds and benzoxazine compounds, (C) 0.1-5 weight % of a polyvalent phenolic compound and (D) 80-97.9 weight % of a spherical filler having an elastic modulus of 300 GPa or more. The epoxy resin composition has a void fraction of 3% or less and a high elastic modulus.
Abstract:
An epoxy resin curable composition for a prepreg, comprising the following components (A) to (E): (A): a polyamide compound having a structure derived from an aromatic diamine including a phenolic hydroxyl group, the aromatic diamine having the phenolic hydroxyl group in a position adjacent to an amino group; (B): an epoxy resin; (C): an epoxy resin curing agent; (D): a filler; and (E): a solvent.
Abstract:
PROBLEM TO BE SOLVED: To provide a resin composition which does not impair resin properties and has excellent low-dielectric properties even when a polytetrafluoroethylene filler is blended therewith.SOLUTION: The resin composition contains: an epoxy resin represented by formula (I); a phenol resin represented by specific formula, as a curing agent; and a polytetrafluoroethylene filler, wherein, in formula, n represents an integer of 0-50, and A represents at least one bivalent group selected from a group of specific formulae.
Abstract:
PROBLEM TO BE SOLVED: To provide a compound which gives an epoxy resin composition excellent effects in terms of properties of toughness, a high glass transition temperature and a low thermal linear expansion coefficient. SOLUTION: The compound is obtained by reacting (a) an epoxy compound expressed by formula (1) with (b) a modified rubber. The epoxy resin composition contains the compound, has high adhesivity, a low thermal linear expansion coefficient, low hygroscopicity, a high glass transition temperature and excellent properties in toughness such as in tensile properties and elongation. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an epoxy resin composition excellent in adhesion to polyimide; and an insulating adhesive for polyimide having excellent adhesion to polyimide and also having excellent insulating properties and moisture resistance.SOLUTION: This epoxy resin composition includes: an epoxy resin (A); a rubber component (B) principally consisting of a maleic anhydride-modified hydrogenated styrene butadiene rubber; a polyphenylene ether (C); and at least one phosphorus compound (D) selected among from inorganic metal salts of phosphorus compounds and complexes thereof. An insulating adhesive for polyimide containing the epoxy resin composition is also provided. In the epoxy resin composition: 10-30 mass% of the component (A), 30-50 mass% of the component (B), and 30-50 mass% of the component (C) are included relative to the total amount of the components (A), (B) and (C); while 10-20 pts.mass of the component (D) is included based on 100 pts.mass of the total amount of the components (A), (B) and (C).
Abstract:
PROBLEM TO BE SOLVED: To provide a printed board excellent in low dielectric property, flame retardancy and solder heat resistance after boiled, and to provide an epoxy resin composition used for the printed board.SOLUTION: The epoxy resin composition comprises an epoxy resin, a curing agent and a reactive flame retardant, wherein the curing agent is a biphenylene aralkyl-type phenol resin represented by formula (I). A printed wiring board is obtained by using the epoxy resin composition. In formula (I), m represents an integer of 0 to 400; and Xto Xeach independently represent a hydrogen atom or a 1-10C alkyl group.
Abstract:
PROBLEM TO BE SOLVED: To provide an epoxy resin composition for low-elastic thermosetting resin, wherein the resin composition is used as an insulating adhesive having high glass transition temperature (Tg) and is excellent in features such as low elasticity (stress-relieving properties) and low coefficient of thermal expansion; and to provide the insulating adhesive suitably used for electric components.SOLUTION: The epoxy resin composition is obtained by containing an epoxy resin (A), a core-shell type low-elastic filler (B), and a polyamide resin (C). The thermosetting insulating adhesive contains the resin composition. The content of the polyamide resin (C) is 50-150 pts.mass based on 100 pts.mass of the epoxy resin (A); and the content of the core-shell type low-elastic filler (B) is 20-50 mass% of all formulations.
Abstract:
PROBLEM TO BE SOLVED: To provide a thermosensitive recording material which has an excellent initial color-developing sensitivity and color-preserving stability. SOLUTION: The thermosensitive recording material contains a phosphoric-acid amide compound represented by formula (I) in a thermosensitive recording layer wherein the ring A and the ring B represent the compound or in combination of the compound by formula (α). COPYRIGHT: (C)2007,JPO&INPIT