Benzoin photoinitiator containing a quaternary ammonium group in photo curable composition and process

US4257859A · kind A · utility

Assignee

• BASF SE

Inventors

• Martin Fischer · Ludwigshafen, DE
• Werner Kuesters · Ludwigshafen, DE
• Erich Penzel · Heidelberg, DE
• Wolfgang Rehder · Ludwigshafen, DE
• Walter Trautmann · Marl, DE

Key dates

• Filing date: Jul 12, 1979
• Grant date: Mar 24, 1981
• Expiry date: Jul 12, 1999

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S430/121
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Quaternary ammonium compounds of the formula ##STR1## where R.sup.1 and R.sup.2 are identical or different and each is H, halogen, phenyl, alkyl, alkoxy or alkylthio, PA1 R.sup.3 is H or alkyl, hydroxyalkyl, cycloalkyl or aralkyl, PA1 R.sup.4 and R.sup.5 are identical or different and each is alkyl, phenyl, cycloalkyl or aralkyl or PA1 R.sup.4 and R.sup.5 together are a --(CH.sub.2).sub.4 -- bridge, a --(CH.sub.2).sub.5 -- bridge or a --(CH.sub.2).sub.2 --O--(CH.sub.2).sub.2 -- bridge, PA1 R.sup.6 is alkyl and PA1 X.sup..crclbar. is Cl.sup..crclbar., Br.sup..crclbar., I.sup..crclbar., CH.sub.3 SO.sub.4.sup..crclbar. or C.sub.2 H.sub.5 SO.sub.4.sup..crclbar., a process for their preparation from Mannich bases of the formula ##STR2## and alkylating agents, and the use of these quaternary ammonium compounds as initiators for the photopolymerization of polymerizable mixtures containing olefinically unsaturated compounds, especially for the preparation of aqueous polymer dispersions or polymer solutions.