Disperse azo dyes
Номер патента: MY200716A
Опубликовано: 12-01-2024
Автор(ы): Patric Nowack, Romeo Dreier, Urs Lauk
Принадлежит: Huntsman Textile Effects Switzerland Gmbh
Опубликовано: 12-01-2024
Автор(ы): Patric Nowack, Romeo Dreier, Urs Lauk
Принадлежит: Huntsman Textile Effects Switzerland Gmbh
Реферат: The present invention relates to disperse azo dyes of formula wherein R1 is bromo, nitro, cyano, methyl, methoxy or trifluoromethyl; R2 is hydrogen, chloro, bromo or trifluoromethyl; R3 is hydrogen, chloro, bromo, methoxy, trifluoromethyl, nitro or cyano; and R4 is methyl, ethyl, n-propyl, 2-methoxyethyl, methoxycarbonylmethyl or 2-methoxyca rbonylethyl; with the proviso that R1 is cyano in case R2 denotes chloro or bromo, to a process for the preparation of such dyes and to their use in the dyeing or printing of semi-synthetic and, especially, synthetic hydrophobic fibre materials, more especially textile materials.
Disperse azo dyes
Номер патента: US11479912B2. Автор: Urs Lauk,Patric Nowack,Romeo Dreier. Владелец: Huntsman Advanced Materials Licensing Switzerland GmbH. Дата публикации: 2022-10-25.