Multilayer dry-film negative-acting photoresist

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making

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430258, 430260, 430273, 430286, 430285, 430281, 430533, 430534, 430961, 430277, 430939, 430256, 430257, 430259, 430299, 156335, 156327, 522 96, G03C 194, G03C 500, G03C 168

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047569883

ABSTRACT:
Dry-film, negative-acting photoresist layers are used in the formation of many articles such as circuit boards, printing plates and the like. Laminable monolayers of photoresist can suffer from slow speeds, brittleness, variable adhesive characteristics, and narrow processing latitude during development and exposure. The use of a crosslinked or crosslinkable integral thermoplastic adhesive laer on the dry-film, negative-acting photoresist layer improves the properties and performance of the photoresist.

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