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 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 a prepreg suitable for a copper-clad substrate, which exhibits high processing precision in forming vias by laser and can form vias of high processing accuracy with a few laser shots, especially in high-energy laser processing by a direct laser method.SOLUTION: Provided is a prepreg formed by impregnating a glass cloth with a thermosetting resin composition whose glass transition temperature after curing becomes 170 to 300°C. The thermosetting resin composition comprises a thermosetting resin component (A) comprising a polyfunctional epoxy resin, a phenol resin and an imidazole-based curing agent, a phosphoric acid-based flame retardant component (B) comprising a phosphoric acid amide compound and a phosphoric ester compound, and an inorganic filler component (C) comprising aluminum hydroxide and silica as essential components. Furthermore, a content of the inorganic filler component (C) in the thermosetting resin component is 40 to 80 mass%.
Abstract:
PROBLEM TO BE SOLVED: To provide a curing agent capable of providing an epoxy resin with high peel strength with respect to a surface that has low surface roughness, without increasing an amount of a filler blended therein. SOLUTION: A polyamide compound having a partial structure represented by general formula (I) and/or general formula (I') (wherein X represents a hydrogen atom or a hydroxyl group) in a repeating unit is disclosed. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a composite material having an epoxy resin adhesive layer at the interface of a polyimide layer and an epoxy resin layer. SOLUTION: The composite material is formed by laminating a layer (B) comprising a polyimide on a layer (A) comprising an epoxy resin curable composition containing a polyamide compound which has a structure having a phenolic hydroxyl group represented by the general formula (I) or the general formula (II). In the formulae (I) and (II), rings A and B are each a 6-18C arylene group or a 13-25C alkylidenediarylene group. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an epoxy resin curing composition for prepreg having a high glass transition temperature and affording the prepreg having a low coefficient of linear expansion. SOLUTION: The epoxy resin curing composition for the prepreg comprises the following components (A) to (E). (A) a polyamide compound having a structure derived from a phenolic hydroxy group-containing aromatic diamine having the phenolic hydroxy group at a position adjacent to the amino group, (B) an epoxy resin, (C) an epoxy resin curing agent, (D) a filler and (E) a solvent. COPYRIGHT: (C)2007,JPO&INPIT