Polyborate coinitiators for photopolymerization

US6087062A · kind A · utility

Assignee

• Ciba Specialty Chemicals Corporation · US

Inventors

• Allan F. Cunningham · Somers, US
• Martin Kunz · Weil am Rhein, DE

Key dates

• Filing date: May 19, 1998
• Grant date: Jul 11, 2000
• Expiry date: May 19, 2018

Classification

• Technology area (CPC G): Physics
• CPC primary: G03F7/029
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Compounds of the formula I and II ##STR1## in which R.sub.1, R.sub.2 and R.sub.3 are, for example, unsubstituted or substituted phenyl, where none of the radicals R.sub.1 -R.sub.3 is a phenyl radical which is substituted ortho to the bond to the borate atom; PA1 R.sub.1 ', R.sub.2 ', R.sub.3 ' have one of the meanings of R.sub.1 -R.sub.3 ; PA1 R.sub.4 and R.sub.5 are OH or OR.sub.6 or have one of the meanings of R.sub.1 -R.sub.3 and the radicals R.sub.1 ', R.sub.2 ', R.sub.3 ', R.sub.4 and R.sub.5 can also be substituted ortho to the bond to the borate atom; PA1 R.sub.6 is, for example, unsubstituted or C.sub.1 -C.sub.12 alkoxy- or halo-substituted C.sub.1 -C.sub.12 alkyl; PA1 X is, for example, C.sub.1 -C.sub.20 alkylene which is unsubstituted or substituted or which is interrupted by one or more aromatic hydrocarbons, or X is, for example, C.sub.3 -C.sub.12 cycloalkylene or polycycloalkylene; and PA1 Z.sup.+ is a radical which is able to form positive ions; are suitable as coinitiators for the photopolymerization of ethylenically unsaturated compounds.