PL20573B1 - Method for the production of water-insoluble azo dyes. - Google Patents

Method for the production of water-insoluble azo dyes. Download PDF

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Publication number
PL20573B1
PL20573B1 PL20573A PL2057333A PL20573B1 PL 20573 B1 PL20573 B1 PL 20573B1 PL 20573 A PL20573 A PL 20573A PL 2057333 A PL2057333 A PL 2057333A PL 20573 B1 PL20573 B1 PL 20573B1
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PL
Poland
Prior art keywords
water
production
azo dyes
insoluble azo
yarn
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Application number
PL20573A
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Polish (pl)
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Publication date
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Publication of PL20573B1 publication Critical patent/PL20573B1/en

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Wykryto, ze mozna otrzymywac cenne, nierozpuszczalne w wodzie barwniki azo¬ we, sprzegajac amidy kwasu acetyloocto- wego, w których atom wodoru grupy ami¬ dowej jest zastapiony reszta benzotiazolu wzglednie podstawionego benzotiazolu, ze skladnikami dwuazowania, niezawierajace- mi grup, które czynia zwiazki te rozpu- szczalnemi w wodzie.Barwniki, otrzymywane w ten sposób, barwia naogól w odcieniach zóltych, a wy¬ tworzone zabarwienia odznaczaja sie bar¬ dzo dobra odpornoscia na dzialanie swiatla i chloru.Przyklad I. 6 g acetooctowokarboylo- 2'-amino-6'-etoksy-benzotiazolu rozpuszcza sie w 5 cm3 lugu sodowego o 38°Be oraz 10 cm3 czerwonego oleju tureckiego i dopelnia woda do litra. 50 g przedzy bawelnianej zaprawia sie tym roztworem, dodajac soli kuchennej, i wywoluje wybarwienie roztworem, zawie¬ rajacym 1,42 g dwuazowanego l-a.mmo-2- metylo-5-chlorobenzenu i zobojetnionym octanem sodowym, nastepnie plócze i na¬ mydla. Otrzymuje sie jasna zólcien o bar¬ dzo dobrej trwalosci.Przyklad II. 50 g przedzy bawelnianej zaprawia sie roztworem, opisanym w przy¬ kladzie I. Przez wywolywanie wybarwienia roztworem, zawierajacym 1,52 g dwuazo¬ wanego ^-amino-2-nitro-4-metylobenzenu i zobojetnionym octanem sodowym, otrzy¬ muje sie, po wyplókaniu i namydleniu prze-dzy, zólcien o czerwonym odcieniu i o bar¬ dzo dobrej trwalosci.Przyklad III. 50 g przedzy bawelnianej zaprawia sie, jak w przykladzie L Przez wywolywanie wybarwienia roztworem, za¬ wierajacym 1,42 g dwuazowanego ./-amino- 2-imetylo-4-chlorobenzenu i zobojetnionym octanem sodowym, otrzymuje sie, po wy- plókaniu i namydleniu przedzy, piekna zól¬ cien.Przyklad IV. Przedze bawelniana za¬ prawia sie wedlug przykladu I, wywoluje wybarwienie roztworem, zawierajacym 1,27 g dwuazowanej o-chloro-aniliny i zobojet¬ nionym octanem sodowym. Po wyplókaniu i namydleniu przedzy otrzymuje sie jasna zólcien o odcieniu zielonym i o dobrej trwa¬ losci. PL PLIt has been found that valuable water-insoluble azo dyes can be obtained by coupling amides of acetoacetic acid, in which the hydrogen atom of the amide group is replaced by a benzothiazole residue or a substituted benzothiazole, with diazotizing agents which do not contain groups which render these compounds water-soluble. The dyes obtained in this way generally give yellow shades, and the colours produced are distinguished by very good fastness to light and chlorine. Example 1. 6 g of acetoaceticcarboyl-2'-amino-6'-ethoxy-benzothiazole are dissolved in 5 cm³ of sodium hydroxide solution at 38°Be and 10 cm³ of red Turkish oil, and the volume is made up to 1 litre with water. 50 g of cotton yarn are mixed with this solution, adding table salt, and the color is developed with a solution containing 1.42 g of diazotized l-a.mmo-2-methyl-5-chlorobenzene and neutralized sodium acetate, then rinsed and soaped. A light yellow color with very good durability is obtained. Example II. 50 g of cotton yarn are mordanted with the solution described in Example I. By developing the dye with a solution containing 1.52 g of diazotized β-amino-2-nitro-4-methylbenzene and neutralized sodium acetate, after rinsing and soaping the yarn, a red-tinged yellow with very good fastness is obtained. Example III. 50 g of cotton yarn are mordanted as in Example L. By developing the dye with a solution containing 1.42 g of diazotized β-amino-2-nitro-4-methylbenzene and neutralized sodium acetate, after rinsing and soaping the yarn, a beautiful yellow is obtained. Example IV. Cotton yarn is mordanted as in Example 1 and dyed with a solution containing 1.27 g of diazotized o-chloroaniline and neutralized sodium acetate. After rinsing and soaping the yarn, a light yellow with a green tint and good fastness is obtained.

PL20573A 1933-09-01 Method for the production of water-insoluble azo dyes. PL20573B1 (en)

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PL20573B1 true PL20573B1 (en) 1934-10-31

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