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Perfluoroalkyl esters of anthranilic acids
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Patent number 4,587,338
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Issue date May 6, 1986
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Hoechst Aktiengesellschaft
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Erich Schinzel
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
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Mixtures of optical brighteners
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Patent number 4,416,795
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Issue date Nov 22, 1983
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Hoechst Aktiengesellschaft
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Thomas Martini
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
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Brightener mixtures and their use
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Patent number 4,129,412
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Issue date Dec 12, 1978
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Hoechst Aktiengesellschaft
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Dieter Gunther
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
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Benzofuran-oxadiazole compounds
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Patent number 4,122,257
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Issue date Oct 24, 1978
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Hoechst Aktiengesellschaft
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Gunter Prossel
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...