Coating compositions for printed circuit boards
AssigneeThe Yokohama Rubber Co., Ltd.
InventorsTsutomu Kobayashi, Masato Kokusho
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Abstract
Coating compositions are disclosed which are effectively applicable to the plating of insulating bases for use in manufacturing printed circuit boards by the additive process. Selected composite rubber materials are combined with specified amounts of a selected type of calcium sulfate, whereby blister resistance by plating, heat resistance at soldering and peel strength are greatly improved.
Claims8
A coating composition for use in the manufacture of printed circuit boards, which comprises a composite rubber material comprising a rubber and a phenolic resin, and calcium sulfate in an amount of 3-50 parts by weight of 100 parts of said rubber material.
Dependencies are inferred from the claim text.