Adhesion assisting agent fitted metal foil, and printed wiring board using thereof
AssigneeHitachi Chemical Company, Ltd.
InventorsNobuyuki Ogawa, Hitoshi Onozeki, Takahiro Tanabe, Kenji Takai, Norio Moriike, Shin Takanezawa, Takako Ejiri, Toshihisa Kumakura
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Abstract
Provided is an adhesion assisting agent fitted metal foil, comprising an adhesion assisting agent layer having a thickness of 0.1 to 10 μm on a metal whose surface has a ten-point average roughness Rz of 2.0 μm or less, wherein the adhesion assisting agent layer is formed from an adhesion assisting agent composition comprising: (A) an epoxy resin selected from the group consisting of a novolak epoxy resin and an aralkyl epoxy resin; and (C) an epoxy resin curing agent.
Claims24
An adhesion assisting agent fitted metal foil, comprising an adhesion assisting agent layer having a thickness of 0.1 to 10 μm on a metal whose surface has a ten-point average roughness Rz of 2.0 μm or less,
- wherein the adhesion assisting agent layer is formed from an adhesion assisting agent composition comprising:
- (A) an epoxy resin which comprises a novolak epoxy resin, the component (A) having a biphenyl structure;
- and (C) an epoxy resin curing agent, and
- wherein the adhesion assisting agent composition further comprises (B) a polymer which is able to be chemically roughened, selected from the group consisting of cross-linked rubber particles, polyvinyl acetal resin and a carboxylic acid modified polyvinyl acetal resin, and (D) a curing accelerator.
An adhesion assisting agent fitted metal foil, comprising an adhesion assisting agent layer having a thickness of 0.1 to 10 μm on a metal whose surface has a ten-point average roughness Rz of 2.0 μm or less, and the surface of the adhesion assisting agent layer is able to undergo electroless plating by roughening chemically the surface of the adhesion assisting agent layer after any metal is chemically removed,
- wherein the adhesion assisting agent layer comprises an adhesion assisting agent composition comprising (A) an epoxy resin, and the component (A) comprises a novolak epoxy resin and a rubber modified epoxy resin,
- wherein the adhesion assisting agent composition further comprises (B) a polymer component which is able to be chemically roughened, (C) an epoxy resin curing agent, and (D) a curing accelerator, wherein 10 to 80% by weight of the component (A) is the rubber modified epoxy resin, and
- wherein the component (B) is selected from the group consisting of acrylonitrile butadiene rubber, carboxylic acid modified acrylonitrile butadiene rubber, carboxylic acid modified acrylonitrile butadiene rubber particles, particles having a butadiene rubber core and an acrylic resin shell, polyvinyl acetal resin, and carboxylic acid modified polyvinyl acetal resin, and the amount of the component (B) is from 0.5 to 25 parts by weight for 100 parts by weight of the component (A).
Dependencies are inferred from the claim text.