International Business Machines Corporation

Raymond W Angelo

Joseph Paul Kuczynski

Jeffrey Donald Gelorme

Logan L Simpson

William H Lawrence

Socrates P Pappas

Peter Bakos

Robert Richard Bock

John R Susko

Richard M Poliak

Edward J Armstrong

Photocurable compositions with, as photoinitiator, sulfonium salts of the formula: ##STR1## wherein Ar is a fused aromatic radical; R.sub.1 is a divalent organic bridge; each R.sub.2 and R.sub.3 individually is an alkyl, aryl, alkaryl, aralkyl or substituted aryl, provided that not more than one of R.sub.2 and R.sub.3 is alkyl; and A is a non-nucleophilic anion; use thereof and preparation thereof.

Photocurable epoxy composition with sulfonium salt photoinitiator

Sulfonium salts of the formula: ##STR1## wherein Ar is a fused aromatic radical; R.sub.1 is a divalent organic bridge; each R.sub.2 and R.sub.3 individually is an alkyl, aryl, alkaryl, aralkyl or substituted aryl, provided thatn not more than one of R.sub.2 and R.sub.3 is alkyl; and A is a non-nucleophilic anion; use thereof and preparation thereof.

Sulfonium salts and use and preparation thereof

An aqueous acidic composition suitable for etching containing an acid and polyvinyl alcohol and use thereof.

Etchant composition and use thereof

A protective layer composition, suitable for protecting metal electrodes on components and other microelectronic circuitry, comprises an organic thermoplastic polymeric material, an organic solvent or solvents, and a non-ionic fluorocarbon surfactant as a wetting/leveling/flow control agent. A typical formulation comprises an aromatic polymer which cures to form a polyamide-imide polymer, an organic solvent or a mixture of orangic solvents and a non-ionic fluorocarbon surfactant.

Polyimide coating process and material

A solderable, flame retardant wire coating solution composition comprising a bromine and phosphorous containing polyol and hydroxy terminated saturated polyester of adipic acid and ethylene glycol together with a suitable epoxy resin and a phenol blocked toluene diisocyanate adduct. To this is added a small weight/percent of a catalyst, such as dibutyltin dilaurate, all mixed in a suitable solvent.

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Endwell, NY, United States of America

Raymond W Angelo