PL6478B3 - The method of obtaining acid dyes of the anthraquinone series for dyeing wool. - Google Patents

The method of obtaining acid dyes of the anthraquinone series for dyeing wool. Download PDF

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Publication number
PL6478B3
PL6478B3 PL6478A PL647825A PL6478B3 PL 6478 B3 PL6478 B3 PL 6478B3 PL 6478 A PL6478 A PL 6478A PL 647825 A PL647825 A PL 647825A PL 6478 B3 PL6478 B3 PL 6478B3
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PL
Poland
Prior art keywords
acid dyes
dyeing wool
anthraquinone series
obtaining acid
dyes
Prior art date
Application number
PL6478A
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Polish (pl)
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Application filed filed Critical
Publication of PL6478B3 publication Critical patent/PL6478B3/en

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Najdluzszy czas trwania patentu do 12 marca 1940 r.Patent glówny Nr 1763 ochrania spo¬ sób otrzymywania kwasnych barwników, nadajacych sie do barwienia welny. Spo¬ sób ten polega na tern, ze amino, wzglednie alkyloamino-dwuantrachinonyloamine obra¬ bia sie srodkiem sulfonujacym. W ten spo¬ sób otrzymuje sie barwniki o odcieniach od ciemnoniebieskich do zielonoszarych, od¬ znaczajacych sie odpornoscia.Obecnie wykryto, ze mozna otrzymac barwniki, posiadajace takie same cenne wlasnosci, jak i produkty wytwarzane we¬ dlug patentu glównego, szczególnie zas wy¬ kazujace taka sama odpornosc na dziala¬ nie swiatla, jesli niepodstawiona dwuantra- chinonyloamine poddac dzialaniu srodka sulfonujacego.Wyniku tego nie mozna bylo przewi¬ dziec. Barwniki patentu glównego posiada¬ ja grupy auksochromowe, które maja istot¬ ne znaczenie dla charakteru i wlasnosci barwnika. W wypadku niniejszym grup tych niema. Pomimo to otrzymuje sie barw¬ niki o silnem zabarwieniu, o takich samych cennych wlasnosciach, lecz o odcieniach, jakich nie mozna bylo otrzymac wedlug sposobu patentu glównego.Przyklad I. Roztwór 10 czesci wago¬ wych 1—7'-dwuantrachinonyloaminy w 100 cz. wag. oleum, zawierajacego okolo 15%5Ó3 ogrzewa sie przez czas krótki do tem¬ peratury 95—100°C dopóty, dopóki wzieta próba nie rozpusci sie calkowicie, wytwa¬ rzajac zóltawo-brunatne zabarwienie. Stop po ostudzeniu, nie ochladzajac, zarabia sie 600 cz. wag. wody, poczem w temperaturze wrzenia dodaje sie stopniowo nasycony roztwór soli dopóty, dopóki barwnik w pró¬ bie wzietej po ostudzeniu nie wydzieli sie calkowicie. Po ostudzeniu produkt reakcji, osadza sie w postaci krystalicznej; saczy go sie i przemywa rozcienczonym kwasem solnym, dopóki przesacz nie wykaze od¬ czynu obojetnego.Barwnik ten na welnie w kapieli kwa¬ snej daje mocne zabarwienie o odcieniu zóltawo-brunatnym, które na zaprawie chromowej, jak równiez po chromowaniu nie ulega zmianie, i jest odporny na dziala¬ nie swiatla, wytrawianie i p tuszowanie.Barwnik zawiera dwie sulfogrupy w po¬ lozeniu 4—4\ które w roztworze wodnym daja sie zastapic bromem, wskutek czego otrzymuje sie znana 4-4'~dwubromo-l-r- dwuantrachinonylamine (Monatshefte f.Chemie tom 35, str. 1135).Zapomoca ostroznego sulfonowania w temperaturze niskiej np. zapomoca oleum, zawierajacego 25% S0S1 w temperaturze okolo 30°C mozna otrzymac kwas jednosul- fonowy f-/'-dwuantrachinonylaminy, który barwi welne na mocny kolor brunatno-czer- wony.Przyklad II. Sulfonowanie 7-2'-dwuan- trachinonylaminy, jak równiez i przeróbke stopu mozna prowadzic analogicznie do przykladu I. W tym wypadku wystarcza w celu wprowadzenia dwóch sulfogrup ogrze¬ wac roztwór oleum przez czas bardzo krótki.Produkt otrzymuje sie w postaci czer- wonawo-brunatnej masy krystalicznej, któ¬ ra na welnie w kapieli kwasnej daje jasne zólto-pomaranczowe zabarwienie, o takiej samej odpornosci, jak i zabarwienie barw¬ nika, otrzymanego w przykladzie L PL PL PLThe longest patent period, until March 12, 1940, was the main patent, No. 1763, which protects a process for obtaining acid dyes suitable for dyeing wool. This process involves treating an amino or alkylamino-dianthraquinonylamine with a sulfonating agent. In this way, dyes with shades ranging from dark blue to greenish-gray are obtained, characterized by their fastness. It has now been discovered that dyes can be obtained with the same valuable properties as the products manufactured according to the main patent, especially those with the same fastness to light, if unsubstituted dianthraquinonylamine is treated with a sulfonating agent. This result was unpredictable. The dyes of the main patent contain auxochromic groups, which are essential for the character and properties of the dye. In the present case, these groups are absent. Despite this, strongly colored dyes are obtained, with the same valuable properties, but in shades that could not be obtained by the method of the main patent. Example 1. A solution of 10 parts by weight of 1-7'-dianthraquinonylamine in 100 parts by weight of oleum containing about 15% 503 is heated for a short time to a temperature of 95-100°C until the sample taken dissolves completely, producing a yellowish-brown color. After cooling the melt, 600 parts by weight of water are mixed without cooling, and then, at boiling temperature, saturated salt solution is gradually added until the dye in the sample taken after cooling separates completely. After cooling, the reaction product settles in crystalline form; It is filtered and washed with dilute hydrochloric acid until the filtrate is neutral. This dye gives a strong yellowish-brown color on wool in an acid bath, which does not change on chrome mordant or after chrome plating, and is fast to light, etching, and ink. The dye contains two sulfo groups in the 4-4 position, which in aqueous solution can be replaced by bromine, resulting in the formation of the well-known 4-4'-dibromo-1-r-dianthraquinonylamine (Monatshefte f. Chemie vol. 35, p. 1135). By careful sulfonation at low temperature, e.g. with oleum containing 25% SO2 at a temperature of about 30°C, one can obtain monosulfonic acid of α-β-dianthraquinonylamine, which dyes wool a strong brownish-red color. Example II. Sulfonation of α-β-dianthraquinonylamine, as well as the processing of the melt, can be carried out analogously to Example I. In this case, it is sufficient to heat the oleum solution for a very short time to introduce the two sulfo groups. The product is obtained in the form of a reddish-brown crystalline mass, which gives a bright yellowish-orange color on wool in an acid bath, with the same fastness as the dye obtained in Example L. PL PL PL

PL6478A 1925-09-22 The method of obtaining acid dyes of the anthraquinone series for dyeing wool. PL6478B3 (en)

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PL6478B3 true PL6478B3 (en) 1927-01-31

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