Invention Grant
US09408296B2 Resin composition, and protective film, dry film, circuit board, and multilayer circuit board containing same 有权
树脂组合物,保护膜,干膜,电路板和含有它们的多层电路板

Resin composition, and protective film, dry film, circuit board, and multilayer circuit board containing same
Abstract:
A resin composition which is capable of forming a film that has excellent heat resistance and slidability/bendability; a protective film for circuits, which uses the resin composition; and a dry film or the like which comprises the protective film are provided. Other aspects are a circuit board and a multilayer circuit board, each of which has excellent heat resistance and slidability/bendability. Furthermore, a protective film for circuit boards is provided, which is arranged in contact with a circuit of a printed wiring board, and contains a polyoxazolidone resin that has a weight average molecular weight of 3×104 or more.
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