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US Patent 5652344 - 2-amino-5-nitrothiazole derived monoazo disperse dyes
US Patent Issued on July 29, 1997
Estimated Patent Expiration Date:
September 25, 2016Estimated 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.
Estimated Patent Expiration Date:
September 25, 2016Estimated 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.Abstract2-amino-5-nitrothiazole derived compounds having the following formula: ##STR1## Wherein R1=H or alkyl of 1-4 carbons, R2=alkyl of 1-4 carbons or allyl group and R3=H, halogen or alkyl of 1-4 carbons.The invented compounds are suited for disperse dyestuffs and are able to dye polyester and cellulose acetate fibers with excellent build-up, exhaustion and sublimation fastness. The invention also provides a process for the preparation of the new compounds. | InventorsAssigneeApplicationNo. 719653 filed on 09/25/1996US Classes:534/795The hetero ring is five-membered and contains at least one atom each of sulfur, nitrogen and carbonField of Search534/795The hetero ring is five-membered and contains at least one atom each of sulfur, nitrogen and carbonExaminersPrimary: Higel, Floyd D.Attorney, Agent or FirmUS Patent References2659719, 2790791, 3775049, 3997520, 5-Nitrothiazolyl-2-azophenyl disperse dyesIssued on: 12/14/1976 Inventor: Altermatt4078890, Process for the dyeing and printing of polyester material Issued on: 03/14/1978 Inventor: Koller , et al.4642339Thiazoleazophenylaminoethyl carbonyloxy-C8 -C10 -alkyl compounds useful as dyes for polyester fibers Issued on: 02/10/1987 Inventor: Niwa , et al. Foreign Patent References
International ClassesC09B 029/042C09B 029/085 D06P 011/18 D06P 003/42 D06P 003/54 |
