Okuno Chemical Industry Co., Ltd.

Sankei Giken Kogyo Kabushiki Kaisya

Toshiyuki Kita

Shigemitsu Kawagishi

Kaneyuki Takagi

Kazuya Satou

Disclosed is a method for electroless metal deposition, which comprises steps of: forming, on the surface of a non-conductive body to be plated, a coating of a resin composition for the electroless metal deposition containing therein a polymer (A) having a chemical structure of at least one compound selected from the group consisting of the below-listed (a), and at least one compound selected from the group of the below-listed (b)1 and (b)2; applying a negative electrostatic voltage to the film coating of the resin composition at a temperature level above the glass transition point of said resin composition; thereafter removing the applied voltage at a temperature lower than the glass transition temperature; and successively carrying out the metal deposition steps inclusive of the catalyst imparting step and the activating step: (a) a chemical structure, in which a part of hydrogen in the main chain of polymer is substituted with the halogen group or the nitrile group, and a chemical structure having a double bond at a portion held between the aromatic substituents in the main chain of the polymer; and (b)1 a polymer (B) having a functional group which is capable of forming a metal salt; and (b)2 a low molecular weight compound (C) having a functional group which is capable of forming a metal salt, and having complete miscibility with the polymer (A) to form one phase.

Resin composition for electroless metal deposition and method for

A local electroless plating process for plastics comprising the steps of: coating the nonplating surface portion of a shaped plastic product with a pasty masking composition comprising a polymer and at least one compound selected from the group consisting of a sulfur compound, nitrogen compound and silicon compound; roughening the surface portion of the plastics product to be plated and applying a catalyst to the rough-surfaced portion; electrolessly plating the plastics product; and removing the polymer coating from the nonplating surface portion of the plastics product.

Local electroless plating process for plastics

This invention provides a method for forming metallic deposits on a nonconductor to provide a shield against electromagnetic radiation, the method comprising the steps of:

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Nara, Japan

Toshiyuki Kita