The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 02, 2006
Filed:
Jan. 12, 2004
Tadahiko Yokota, Kawasaki, JP;
Shigeo Nakamura, Kawasaki, JP;
Tadahiko Yokota, Kawasaki, JP;
Shigeo Nakamura, Kawasaki, JP;
Ajinomoto Co., Inc., Tokyo, JP;
Abstract
The present invention relates to a film for a circuit board characterized in that the following A layer is adjacent to the following B layer is disclosed in the present application. A circuit board excellent in adhesion strength of a conductor layer can easily be produced by using this film. A layer: a heat-resistant resin layer with a thickness of from 2 to 250 μm which layer is made of a heat-resistant resin having a glass transition point of 200° C. or more or a decomposition temperature of 300° C. or more, and B layer: a roughenable cured resin layer with a thickness of from 5 to 20 μm which layer is made of a cured product of a thermosetting resin composition containing at least component (a) of an epoxy resin having two or more epoxy groups in a molecule and component (b) of an epoxy curing agent, the cured product being capable of roughening with an oxidizing agent.