PL8167B1 - The method of obtaining the yellow azo dye. - Google Patents

The method of obtaining the yellow azo dye. Download PDF

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Publication number
PL8167B1
PL8167B1 PL8167A PL816727A PL8167B1 PL 8167 B1 PL8167 B1 PL 8167B1 PL 8167 A PL8167 A PL 8167A PL 816727 A PL816727 A PL 816727A PL 8167 B1 PL8167 B1 PL 8167B1
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PL
Poland
Prior art keywords
obtaining
nitro
azo dye
yellow azo
yellow
Prior art date
Application number
PL8167A
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Polish (pl)
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Publication date
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Publication of PL8167B1 publication Critical patent/PL8167B1/en

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Wiadomo, ze bardzo znaczna czesc sto¬ sowanych dotychczas kio batrwienia jedwa¬ biu octanowego zóltych jednoazowych barwników daja na jedwabiu octanowym zabarwienia fototropowe.Obecnie wykryto, ze barwnik z dwua- zowanej p-nitroaniliny i /-nitro-2.4-dwua- minobenzenu barwi octan blonnika na piekne nie-fototropowe zóltozlote odcie¬ nie, równiez odporne.Wlasnosci tego nowego produktu sa tern bardziej nieoczekiwanie, ze np, barw¬ nik z m-nitroaniliny i 7-nitro-2.4-dwuami- nobenzemu daje na jedwabiu octanowym bardzo slabe zabarwienia,. Inne polacze¬ nia z nitro - m - feinylenodwuamina, jak np. anilina - nitro - m - fenylendwuamina, p-chloroaniliiia^nitro - m - fenylendwua¬ mina, o-toluidyna -? nitro - m - fenylen¬ dwuamina p - amino - metyloacetamilid -». nitro - m - fenylendwuamina i t, d daja na octanie blonnika wprawdzie piekne i moc¬ ne zabarwienia, to jednak wszystkie sa barwnikami fototropowemi.Przyklad 153 cz, wag. l-nitro-2.4- dwuaminobenzenu rozpuszcza sie w gora¬ cej wodzie i roztwór ten wylewa miesza¬ jac energicznie na lód. Do przygotowanej w ten sposób zawiesiny wlewa sie iw sposób znany zwiazek dwuaziowy, otrzymany ze 138cz. wag. p-nitroaniliny. Po kilkugodzinnem mieszaniu sprzeganie jest zakonczone.Barwnik po odsaczeniu i wysuszeniu two¬ rzy proszek zólty.Barwnik nadaje sie znakomicie do dru¬ kowania jedwabiu octanowego. PL PL PLIt is known that a very large proportion of the yellow monoazo dyes used so far for dyeing acetate silk produce phototropic colors on acetate silk. It has now been discovered that a dye composed of diazotized p-nitroaniline and β-nitro-2,4-diaminobenzene dyes acetate fiber in beautiful non-phototropic, also fast, yellow-gold shades. The properties of this new product are all the more unexpected, as, for example, a dye composed of m-nitroaniline and 7-nitro-2,4-diaminobenzene produces very weak colors on acetate silk. Other combinations with nitro - m - phenylenediamine, such as aniline - nitro - m - phenylenediamine, p-chloroaniline, nitro - m - phenylenediamine, o-toluidine - nitro - m - phenylene diamine, p-amino - methylacetamilide -», nitro - m - phenylenediamine, etc., although they give beautiful and strong colors on fiber acetate, all of them are phototropic dyes. Example 153 parts by weight of l-nitro-2,4-diaminobenzene is dissolved in hot water and this solution is poured onto ice with vigorous stirring. The diazine compound obtained from 138 parts by weight of p-nitroaniline is poured into the suspension thus prepared in a known manner. After several hours of stirring, the coupling is complete. After filtering and drying, the dye forms a yellow powder. The dye is excellent for printing acetate silk. PL PL PL

PL8167A 1927-04-25 The method of obtaining the yellow azo dye. PL8167B1 (en)

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PL8167B1 true PL8167B1 (en) 1928-01-31

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