Pyrroline derivative
Patent 4845235 Issued on July 4, 1989. Estimated Expiration Date: 
May 15, 2007. 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.
May 15, 2007. 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.Patent References3013013 InventorsAssigneeApplicationNo. 07/049967 filed on 05/15/1987US Classes:548/550Nitrogen attached directly or indirectly to the five-membered hetero ring by acyclic nonionic bondingExaminersPrimary: Springer, David B.Attorney, Agent or FirmInternational ClassesC09B 23/00 (20060101)C09B 23/01 (20060101) Foreign Application Priority Data1986-05-21 JPAbstractA pyrroline derivative represented by the formula: ##STR1## wherein R1 and R2 each independently stand for an alkyl (C1-6), allyl, alkoxy (C1-6) ethyl, allyloxyethyl, phenoxyethyl, phenylalkyl (C1-3), alkoxy (C1-6) carbonylalkyl (C1-3) or phenoxyethoxycarbonylalkyl (C2-3) group and R3 stands for a hydrogen atom or R3 ', wherein R3 ' stands for an alkyl (C1-6), allyl, benzyl, chlorobenzyl, nitrobenzyl, phenethyl, alkoxy (C1-6) carbonylalkyl (C1-3), phenoxyethoxycarbonylalkyl (C2-3) or cyanoalkyl (C1-2) group, a process for producing a pyrroline derivative represented by the formula (I) and methods for dyeing a hydrophobic fiber and coloring a synthetic resin with the same. |
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