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    • 2. 发明授权
    • 1-amino-4-sulfonamidoanthraquinone compounds comtaining an ether group in the 2-position
    • 在2-位含有醚基的1-氨基-4-磺酰氨基蒽醌化合物
    • US3072683A
    • 1963-01-08
    • US8550661
    • 1961-01-30
    • EASTMAN KODAK CO
    • STRALEY JAMES MGILES RALPH R
    • C09B1/54
    • C09B1/54C09B1/36C09B1/545
    • b -Ethoxyethanesulphonamide is prepared by heating 2-bromoethyl ethyl ether in aqueous ethanol with addition of an aqueous sodium sulphite solution, evaporating the mixture to dryness, extracting the residue with boiling ethanol and treating it with phosphorus pentachloride to give b -ethoxyethanesulphonyl chloride which is reacted in benzene solution with anhydrous ammonia.ALSO:The invention comprises anthraquinone dyes of formula wherein R is an alkyl group of 1-8 carbon atoms, an alkoxyalkyl group having 3-6 carbon atoms, a hydroxyalkyl group having 2-4 carbon atoms, or an allyl, benzyl, cyclohexyl, tetrahydrofurfuryl or b -phenoxy-ethyl group and R1 is an alkyl group having 1-8 carbon atoms, an alkoxyalkyl group having 3-6 carbon atoms or the cyclohexyl group. The dyes are used to dye polyester and cellulose ester fibres in red shades. In examples: (1) a mixture of 1-amino-4-bromoanthraquinone-2-sodium sulphonate, ethanesulphonamide, sodium acetate, copper sulphate and water are refluxed together to give 1-amino-4-ethylsulphonamido - anthraquinone - 2 - sulphonic acid which is treated with methanolic potassium hydroxide to give 1-amino-2-methoxy-4-ethylsulphonamido-anthraquinone and the corresponding 4 - b - ethoxyethylsulphonamido - 4-n - pentylsulphonamido, 4 - n - butylsulphonamido and 4-isoamylsulphonamido compounds are similarly prepared; (2) a mixture of 1-amino-4 - bromoanthraquinone - 2 - sulphonic acid, potassium carbonate methane sulphonamide and water is refluxed to give the potassium salt of 1 - amino - 4 - methylsulphonamido - anthraquinone-2-sulphonic acid which is treated a mixture of n-butyl alcohol and potassium hydroxide to give 1-amino-2-n-butoxy - 4 - methylsulphonamido - anthraquinone and the corresponding 2-tetrahydrofurfuryloxy-, 2-ethoxy-, 2-cyclohexoxy-, 2-benzyloxy-, 2-b -ethoxy-ethoxy-, 2-b -phenoxyethoxy- and 2-b -n-butoxyethoxy-compounds are similarly prepared; (3) 1,4-diamino-2-methoxyanthraquinone and cyclohexane-sulphonyl chloride are refluxed in ethylene glycol monomethyl ether to give 1 - amono - 2 - methoxy - 4 - cyclohexylsulphonamido - anthraquinone. Specifications 578,079, 818,157 and 822,015 are referred to.