Process for preparing catalytic solutions of sulfonium salts
AssigneeW. R. Grace & Co.
InventorsJung-Hsien Tsao, Arthur D. Ketley
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Abstract
This invention relates to a process for preparing a catalytic solution of a sulfonium salt of a complex anion, capable of yielding a Lewis Acid when irradiated by UV or high energy ionizing radiation comprising reacting a sulfonium halide with an alkali metal salt of the complex anion in a solvent mixture containing a polyol having at least two hydroxy groups and a lactone.
Claims5
A process for preparing a photocatalytic solution of a sulfonium salt of a complex anion, capable of yielding a Lewis Acid when irradiated by UV light which comprises reacting a sulfonium halide with an alkali metal or ammonium salt of a complex anion in a solvent mixture containing a polyol containing at least two OH groups and a lactone of the formula:
- ##STR2## wherein R is H or CH.sub.3 and n is 2 to 4, the weight ratio of sulfonium halide:polyol:lactone is in the range 1:1 to 5:1 to 20, respectively.
Dependencies are inferred from the claim text.