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US 4,789,382 AGranted
Benzophenone ether esters and use thereof to improve the light fastness of polyester dyeings
AssigneeBASF SE
InventorsPeter Neumann, Dieter Wegerle, Reinhold Krallmann
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Abstract
Textile polyester material is dyed with disperse dyes in the presence of specific benzophenone derivatives, some of which are novel, to improve the light fastness.
Claims6
A process for dyeing textile polyester material with disperse dyes in the presence of a benzophenone derivative to improve light fastness, which comprises adding to the dye bath a benzophenone derivative of the formula (II):
- ##STR50## wherein R is hydrogen, C.sub.1 -C.sub.4 alkyl, fluorine, chlorine or bromine;
- and R.sup.2 is a radical selected from the group consisting of:
- ##STR51## wherein p and q are each 1 or 2, in an amount of from about 0.1 to 10% by weight, based on the weight of the fiber.
A benzophenone derivative of the formula (III):
- ##STR52## wherein R is hydrogen, C.sub.1 -C.sub.4 alkyl, fluorine, chlorine or bromine;
- m is 1;
- n is 2;
- R.sup.1 is hydrogen;
- and R.sup.2 is a radical selected from the group consisting of:
- ##STR53## wherein p and q are each 1 or 2, with the proviso that R.sup.2 is not phenyl, when R is hydrogen.
3 more elements
Dependencies are inferred from the claim text.