Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1977-02-28
1978-06-27
Person, Sandra M.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 37NP, 260 4221, C08K 535
Patent
active
040974448
ABSTRACT:
Process for the dyeing of a water-insoluble thermoplastic polymer or polycondensate in mass, which comprises adding to the said thermoplastic material before the final molding thereof, an azlactone dyestuff of the formula (1) ##STR1## in which A and B each represents phenyl, lower alkyl-phenyl, lower alkoxy-phenyl, chlorophenyl, nitrophenyl, cyanophenyl, ##STR2## METHYLENE-DIOXY-PHENYLENE OR NAPHTHYL, A and B being identical or different, D represents phenylene, lower alkyl-phenylene, di-lower alkoxy-phenylene, monochlorophenylene, dichlorophenylene, biphenylene or naphthylene, and n represents the integer 0 or 1, or a mixture of dyestuffs of the said formula (1), the dyeings so obtained representing brilliant yellow dyeings of high tinctorial strength being distinguished by very good fastness to light, rubbing and ironing, and, particularly, by an outstanding stability toward heat.
REFERENCES:
patent: 2571319 (1951-10-01), Waters et al.
patent: 3489713 (1970-01-01), Bowman et al.
patent: 3793341 (1974-02-01), Genta
Modern Plastics Encyclopedia - 1967, Sep. '66/ vol. 44, No. 7A p. 459.
Schickfluss Rudolf
Teige Wolfgang
Hoechst Aktiengesellschaft
Person Sandra M.
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