Radiation imagery chemistry: process – composition – or product th – Diazo reproduction – process – composition – or product – Composition or product which contains radiation sensitive...
Patent
1984-10-04
1987-04-07
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Diazo reproduction, process, composition, or product
Composition or product which contains radiation sensitive...
260349, 430196, 430283, 430285, 430325, 430330, 430927, 522 39, 522176, G03C 171, G03C 152
Patent
active
046561161
ABSTRACT:
Polyimides of aromatic tetracarboxylic acid derivatives and aromatic diamines where both ortho-positions relative to a phenylene radical bonded to an imide group of the polymer are substituted by alkyl groups can be radiation-crosslinked with organic chromophoric polyazides. Solutions of said polyimides and polyazides in organic solvents can be used as radiation-sensitive coating compositions for, for example, preparing insulating and protective films and in particular for producing printed circuits and integrated circuits.
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Pfeifer Josef
Rohde Ottmar
Bowers Jr. Charles L.
Ciba-Geigy Corporation
Falber Harry
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