Concentration of light over a particular area, and novel perylene-3,4,9,10-tetracarboxylic acid diimides

US4667036A · kind A · utility

Assignee

• BASF SE

Inventors

• Ruediger Iden · Speyer, DE
• Guenther Seybold · Schifferstadt, DE

Key dates

• Filing date: Aug 20, 1984
• Grant date: May 19, 1987
• Expiry date: Aug 20, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B5/62
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Light is concentrated in plastic sheets by a method in which the fluorescent centers used are perylenetetracarboxylic acid diimides of the formula ##STR1## The compounds (I) are prepared by chlorinating (I) in which n is 0 with sulfuryl chloride in an inert organic liquid in the presence of a catalyst. In the formula, n is 2, 3, 4 or 5 or 6, and R and R.sup.1 independently of one another are each (a) straight-chain or branched C.sub.1 -C.sub.18 -alkyl which is unsubstituted or substituted by cyano, hydroxyl, cycloalkyl, alkylcarbonyloxy, alkenylcarbonyl-oxy or cycloalkylcarbonyloxy and in which the alkyl chain may furthermore be interrupted by O or S, or (b) C.sub.5 -C.sub.18 -cycloalkyl which is unsubstituted or substituted by alkyl, carboalkoxy or trifluoromethyl. Novel perylenetetracarboxylic acid diimides of the formula I, where n is 4 and R and R.sup.1 are each 3-(2'-ethylhexyloxy)-propyl, 2-ethylhexyl, butyl, octyl, tridecyl, octadecyl, pinan-3-ylmethyl, 6-(2'-ethylhexanoyloxy)-6-methylhept-2-yl, 4-methylcyclohexyl, 3,5-dimethylcyclohexyl, 2,6-dimethylcyclohexyl, 2,6-diisopropylcyclohexyl or norbornyl, or R is C.sub.4 -C.sub.12 -alkyl, C.sub.1 -C.sub.4 -alkyl-substituted cycl…