Azo dyes containing a 3-aminobenzothienoisothiazole diazo component
Patent 5037966 Issued on August 6, 1991. Estimated Expiration Date: 
February 28, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 28, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.InventorAssigneeApplicationNo. 486487 filed on 02/28/1990US Classes:534/740, Hetero ring or polycyclo ring system which contains a hetero ring as one of the cyclos bonded directly to an azo group534/581, Formation of azo group by coupling diazonium compound with coupling component in presence of an additional organic compound534/752, Polycyclo ring system having a hetero atom shared by at least two rings or at least two hetero atoms which are not members of the same ring534/887, Purification or recovery548/212, Nitrogen attached directly to the thiazole ring by nonionic bonding549/57Nitrogen or a -C(=X)- group, wherein X is chalcogen, attached directly to the bicyclo ring system by nonionic bondingExaminersPrimary: Lee, Mary C.Assistant: Powers, Fiona T. Attorney, Agent or FirmForeign Patent References
International ClassesC09B 029/039C07D 513/04 D06P 001/18 D06P 001/39 Foreign Application Priority Data1989-03-01 CHAbstractDyes of the formula ##STR1## where R and R1 are independently of the other hydrogen, halogen, nitro, alkyl or alkoxy and KK is the radical of a coupling component, which are particularly suitable for dyeing polyester fibers if no water-solubilizing group is present, and which are particularly suitable for dyeing and printing textile materials made of polyamide fibers when at least one sulfo group is present in the dye.Other References
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