Iodonium salts as latent acid donors

US6306555A · kind A · utility

Assignee

• Ciba Specialty Chemicals Corporation · US

Inventors

• Reinhard Schulz · Hannover, DE
• Jean-Luc Birbaum · Fribourg, CH
• Jean-Pierre Wolf · Maisprach, CH
• Stephan Ilg · Giebenach, CH
• Hitoshi Yamato · Takarazuka, JP
• Toshikage Asakura · Darreh Shahr, IR

Key dates

• Filing date: Dec 18, 2000
• Grant date: Oct 23, 2001
• Expiry date: Dec 18, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S430/115
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Radiation-sensitive compositions comprising PA0 (a1) a cationically or acid-catalytically polymerisable or crosslinkable compound or PA0 (a2) a compound that increases its solubility in a developer under the action of acid; and PA0 (b) at least one diaryliodonium salt of formula I ##STR1## PA0 X is branched C.sub.3 -C.sub.20 alkyl or C.sub.3 -C.sub.8 cycloalkyl; PA0 X.sub.1 is hydrogen, linear C.sub.1 -C.sub.20 alkyl, branched C.sub.3 -C.sub.20 alkyl or C.sub.3 -C.sub.8 cycloalkyl; with the proviso that the sum of the carbon atoms in X and X.sub.1 is at least 4; PA0 Y is linear C.sub.1 -C.sub.10 alkyl, branched C.sub.3 -C.sub.10 alkyl or C.sub.3 -C.sub.8 cycloalkyl; PA0 A.sup.- is a non-nucleophilic anion, selected from the group (BF.sub.4).sup.-, (SbF.sub.6).sup.-, (PF.sub.6).sup.-, (B(C.sub.6 F.sub.5)).sub.4.sup.-, C.sub.1 -C.sub.20 alkylsulfonate, C.sub.2 -C.sub.20 haloalkylsulfonate, unsubstituted C.sub.6 -C.sub.10 arylsulfonate, camphorsulfonate, and C.sub.6 -C.sub.10 arylsulfonate substituted by halogen, NO.sub.2, C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.12 halo-alkyl, C.sub.1 -C.sub.12 alkoxy or by COOR.sub.1 ; and PA0 R.sub.1 is C.sub.1 -C.sub.20 alkyl, phenyl, benzyl; or ph…