Sulfonium salts and use and preparation thereof

US5047568A · kind A · utility

Assignee

• International Business Machines Corporation · US

Inventors

• Raymond W. Angelo · Endwell, US
• Jeffrey D. Gelorme · Plainville, US
• Joseph Kuczynski · North Port, US
• William H. Lawrence · Hudson, US
• Socrates Pappas · Juno Beach, US
• Logan L. Simpson · Coupland, US

Key dates

• Filing date: Nov 18, 1988
• Grant date: Sep 10, 1991
• Expiry date: Nov 18, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S430/115
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

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.