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US 2002/0117649 A1Published application
Cyclic sugar ketones as catalysts for peroxygen compounds
AssigneeClariant GmbH
InventorsGerd Reinhardt, Nicole Reichardt
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Abstract
The use of cyclic sugar ketones of the formula 1 in which R1 and R2 are hydrogen, C1-C22-alkyl, C2-C22-alkenyl or phenyl, R3 is C1-C4-alkoxy, phenyl-CH2—O— or a group of the formula 2 R4 is hydrogen or R3 and R4 together are a group of the formula 3 and n is zero or 1, as catalysts for peroxygen compounds.
Claims9
A process for enhancing the bleaching action of peroxygen compounds comprising combining the peroxygen compounds with cyclic sugar ketones of the formula
- 11
- in which R1 and R2 are hydrogen, C1-C22-alkyl, C2-C22-alkenyl or phenyl, R3 is C1-C4-alkoxy, phenyl-CH2—O— or a group of the formula
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- R4 is hydrogen or R3 and R4 together are a group of the formula
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- and n is zero or 1, as catalysts for peroxygen compounds.
3 more elements
Dependencies are inferred from the claim text.