Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making
Patent
1997-05-20
1999-09-28
Nuzzolillo, Maria
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
4302811, G03C 173
Patent
active
059586478
ABSTRACT:
A thermosensitive resist used in the manufacturing of printed circuit boards comprising a mixture of polyacrylic acid, a salt of a long chain fatty acid such as silver behenate, an infra-red absorber and modifiers such as additional polymers. In the unheated form the resist can be easily washed away with water-based mild solutions or pure water. When selectively heated by an IR laser a non-soluble, etch resistant composition is formed protecting the copper clad printed circuit board from the etchants used in the process.
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Data Sheet of MacDermid Metex Ultra Etch.RTM., (May 29, 1996).
Hallihan William J.
Lisa Steven G.
Nuzzolillo Maria
Werner Laura
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