ES416119A1 - Procedure for the optical clarification of organic materials. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Procedure for the optical clarification of organic materials, and in particular of polyamides, polyesters and cellulose acetates, characterized in that, by means of the thermal extraction or spraying method, the materials to be rinsed optically are treated, in their entire mass or superficially, with 0.0005 to 2% by weight, and preferably from 0.005 to 0.5% by weight, with respect to the weight of the mentioned material, of at least one coumarin-derived compound of the general formula **(See formula)** in which Z1 signifies hydrogen, chlorine or methyl; R1 signifies hydrogen, halogen, C 1 -C 4 -alkyl, C 1 -C 4 -alkoxy or C 1 -C 4 -alkylsulfonyl; R2 means hydrogen, halogen or alkyl with 1 to 4 carbon atoms; X means nitrogen or -CH = y Q means a radical **(See formula)** where R3 represents alkoxy with 1 to 12 carbon atoms, alkenyloxy with 2 to 5 carbon atoms, benzyloxy, (optionally substituted on the phenyl radical with chlorine), acyloxy with 2 to 12 carbon atoms, benzoyloxy (optionally substituted with chlorine, methyl or methoxy), acylamino with 2 to 12 carbon atoms, benzoylamino (optionally substituted with chlorine, methyl or methoxy), a radical -NHCOOY (where Y represents alkyl with 1 to 12 carbon atoms or represents phenyl, optionally substituted with chlorine, methyl or methoxy), a radical -NHCONHY1 (where it represents alkyl with 1 to 4 carbon atoms or represents phenyl, optionally substituted with chlorine, methyl or methoxy) or a radical (see formula) where A represents alkylene with 2 to 4 carbon atoms, while Y2 and Y3, independently of each other, represent alkyl of 1 to 4 carbon atoms, optionally substituted with hydroxyl, or Y2 and Y3 together with the nitrogen represent pyrrolidine, piperidine or morpholino), optionally quaternized; R4 signifies hydrogen, chlorine, methyl or methoxy, and R5 and R6 independently of one another signify hydrogen, C 1 -C 4 -alkyl or C 2 -C 5 -alkoxy. (Machine-translation by Google Translate, not legally binding)