DE956216C - Process for improving the exhaust gas fastness of colored cellulose derivatives - Google Patents

Process for improving the exhaust gas fastness of colored cellulose derivatives

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Publication number
DE956216C
DE956216C DEB30665A DEB0030665A DE956216C DE 956216 C DE956216 C DE 956216C DE B30665 A DEB30665 A DE B30665A DE B0030665 A DEB0030665 A DE B0030665A DE 956216 C DE956216 C DE 956216C
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DE
Germany
Prior art keywords
cellulose derivatives
finely divided
exhaust gas
improving
hour
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEB30665A
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German (de)
Inventor
Dr Julius Eisele
Wilhelm Federkiel
Dr Robert Gehm
Dr Karl Maier
Dr Curt Schuster
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BASF SE
Original Assignee
BASF SE
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Filing date
Publication date
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Priority to DEB30665A priority Critical patent/DE956216C/en
Application granted granted Critical
Publication of DE956216C publication Critical patent/DE956216C/en
Expired legal-status Critical Current

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Classifications

    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/64General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
    • D06P1/642Compounds containing nitrogen
    • D06P1/645Aliphatic, araliphatic or cycloaliphatic compounds containing amino groups
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/64General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
    • D06P1/642Compounds containing nitrogen
    • D06P1/6426Heterocyclic compounds
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/64General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
    • D06P1/642Compounds containing nitrogen
    • D06P1/649Compounds containing carbonamide, thiocarbonamide or guanyl groups
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/64General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
    • D06P1/642Compounds containing nitrogen
    • D06P1/649Compounds containing carbonamide, thiocarbonamide or guanyl groups
    • D06P1/6492(Thio)urethanes; (Di)(thio)carbamic acid derivatives; Thiuramdisulfide
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/02After-treatment
    • D06P5/04After-treatment with organic compounds
    • D06P5/06After-treatment with organic compounds containing nitrogen

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Coloring (AREA)

Description

Im Hauptpatent 949 562 ist ein Verfahren zur Verbesserung der Abgasechtheit gefärbter Cellulosederivate beschrieben, bei dem man die Cellulosederivate vor oder nach dem Färben oder im Färbebad selbst mit kleinen Mengen von Carbonsäureestern von Oxyalkylaminen behandelt. Diese aminogruppenhaltigen Ester können auch in die zu färbenden Cellulosederivate eingesponnen' werden.In the main patent 949 562 is a method for Improvement of the exhaust gas fastness of colored cellulose derivatives described in which the cellulose derivatives before or after dyeing or in the dye bath itself with small amounts of carboxylic acid esters treated by oxyalkylamines. These amino-containing esters can also be spun into the cellulose derivatives to be dyed ' will.

Im ersten Zusatzpatent 953 063 wird beschrieben, daß man eine ähnlich wirksame Verbesserung der Abgasechtheit gefärbter Cellulosederivate auch erreichen kann, wenn man an Stelle der im Hauptpatent genannten aminogruppenhaltigen Ester aminogruppenhaltige Ketone verwendet.In the first additional patent 953 063 it is described that a similarly effective improvement of the Flue gas resistance of colored cellulose derivatives can also be achieved if one takes the place of the one in the main patent named amino group-containing esters used amino-group-containing ketones.

Es wurde nun weiter gefunden, daß man zur Verbesserung der Abgasechtheit gefärbter Cellulosederivate mit besonderem Vorteil aminogruppenhaltige Äther oder Thioäther verwenden kann.It has now been found that colored cellulose derivatives can be used to improve the exhaust gas fastness can use ethers or thioethers containing amino groups with particular advantage.

Geeignete aminogruppenhaltige Äther sind z. B. die Methyl-, Äthyl-, Hexyl-, Cyclohexyl-, Camphyl-, Camphylmethyl-, Phenyl- oder Benzyläther des Mono-, Di- und Triäthanolamins, des N-Methyl- oder N-Butylmono- oder -diäthanolamins oder des N, N-Diäthyläthanolamins, der N - M'ethyldiäthanolamin - bis ,(p-chlorphenoxymethyi)-äther, das N-Benzyloxyäthyl-Suitable ethers containing amino groups are, for. B. the methyl, ethyl, hexyl, cyclohexyl, camphyl, Camphylmethyl, phenyl or benzyl ethers of mono-, di- and triethanolamine, of N-methyl or N-butyl mono- or diethanolamine or N, N-diethylethanolamine, the N-methyldiethanolamine bis, (p-chlorophenoxymethyi) ether, the N-benzyloxyethyl

morpholin, -pyrrolidin oder -piperidin, das N, N'-Bis-(benzyloxyäthyl)-piperazin, der Benzyläther des i, 3-Bis-(diäthylamino)-isopropanols-(2) und die entsprechenden Thioäther; die aminogruppenhaltigen Äther und Thioäther können auch noch freie Oxygruppen und bzw. oder Keto-, Ester- .oder Nitrilgruppen enthalten.morpholine, pyrrolidine or piperidine, the N, N'-bis (benzyloxyethyl) piperazine, the benzyl ether of i, 3-bis- (diethylamino) -isopropanols- (2) and the corresponding Thioether; the ethers and thioethers containing amino groups can also contain free oxy groups and / or keto, ester or nitrile groups.

Man kann die aminogruppenhaltigen Verbindungen z. B. in Acetatreyon einspinnen oder sie vor oder nachYou can use the amino group-containing compounds z. B. in Acetatreyon or spin them before or after

ίο dem Färben oder im Färbebad selbst auf die Fasern aufbringen, wobei man sie in Form von Lösungen oder Suspensionen, gegebenenfalls auch in Form ihrer leicht wieder zerfallenden Formaldehydbisulfitverbindungen anwenden kann.ίο the dye or in the dye bath itself on the fibers apply, taking them in the form of solutions or suspensions, optionally also in the form of their easy can use re-decomposing formaldehyde bisulphite compounds.

Im übrigen verfährt man, wie im Hauptpatent besehrieben.Otherwise one proceeds as described in the main patent.

Beispiel ιExample ι

ioo g eines Acetatreyongewebes -werden ι Stunde bei 80° in 4 1 eines wäßrigen Bades bewegt, das 2 g feinverteiltes 1, 4, 5-Triaminoanthrachinon und 2 g feinverteilten Dibenzyläther des Diäthanolamins der Formel100 g of an Acetatreyonewebes -will ι hour moved at 80 ° in 4 liters of an aqueous bath containing 2 g of finely divided 1, 4, 5-triaminoanthraquinone and 2 g finely divided dibenzyl ether of diethanolamine of the formula

(C6H5 — CH2 — O — CH2 — CH2)2NH
enthält. Das Gewebe wird dann in üblicher Weise
(C 6 H 5 - CH 2 - O - CH 2 - CH 2 ) 2 NH
contains. The fabric is then made in the usual way

C10H17 — CH2 — O — CH2 — CH2 C 10 H 17 - CH 2 - O - CH 2 - CH 2

enthält. Die so erhaltenen hellblauen Färbungen sind gut abgasecht.contains. The light blue dyeings obtained in this way are good gas-fast.

Beispiel 4Example 4

100 g eines Acetatreyongewebes werden 1 Stunde100 g of an Acetatreyonewebes are 1 hour

bei 80 bis 850 in 31 eines wäßrigen Bades bewegt, das 1,5 g feinverteiltes i-Amino^-methoxy^-oxyanthrachinon und 3 g feinverteiltes 2, 2'-Dibenzyloxydipropylafnin der Formelat 80 to 85 0 in 31 of an aqueous bath that contains 1.5 g of finely divided i-amino ^ -methoxy ^ -oxyanthraquinone and 3 g of finely divided 2, 2'-dibenzyloxydipropylafnine of the formula

HN (— CH2 — CH (CH3) — O — CH2 — C6H5J2 HN (- CH 2 - CH (CH 3 ) - O - CH 2 - C 6 H 5 J 2

enthält. Man erhält eine sehr gut abgasechte Rosafärbung. contains. A pink coloration which is very fast to exhaust gases is obtained.

Beispiel 5Example 5

Man behandelt 100 g eines Acetatreyongewebes ι Stunde bei 75 bis 8o° mit 41 eines wäßrigen Bades, das 0,5 g feinverteiltes i-Amino-4-methylaminoanthrachinon-2-carbonsäureamid und 4 g feinverteilten i, 3-Bis-(diäthylamino)-isopropanolbenzyläther der Formel100 g of an Acetatreyonewebes are treated ι hour at 75 to 80 ° with 41 an aqueous bath, the 0.5 g of finely divided i-amino-4-methylaminoanthraquinone-2-carboxamide and 4 g of finely divided i, 3-bis (diethylamino) isopropanol benzyl ether formula

C6H5-CH2-O — CH(CH2N(C2H5)2)2 C 6 H 5 -CH 2 -O-CH (CH 2 N (C 2 H 5 ) 2 ) 2

enthält. Die erhaltene hellblaue Färbung ist sehr gut abgasecht.contains. The light blue coloration obtained is very good emission-proof.

Beispiel 6Example 6

Man färbt 100 g eines Acetatreyonstranges 1 Stunde bei 80° mit 2I eines wäßrigen Bades, das 3 g feinverteiltes 1, 4, 5, 8-Tetraminoanthrachinon und 6 g N, N-Diäthylaminoäthanolbenzyläther100 g of an acetate red strand are dyed for 1 hour at 80 ° with 2I of an aqueous bath containing 3 g of finely divided 1, 4, 5, 8-tetraminoanthraquinone and 6 g of N, N-diethylaminoethanol benzyl ether

(C2Hs)2N — CH2 — CH2 — O — CH2 — C6H6 (C 2 Hs) 2 N - CH 2 - CH 2 - O - CH 2 - C 6 H 6

enthält. Die erhaltene tiefblaue Färbung ist gut abgasecht.contains. The deep blue coloration obtained is resistant to gas emissions.

gespült und fertiggestellt. Man erhält eine sehr gut abgasechte, tiefblaue Färbung.rinsed and finished. You get a very good one Emission-fast, deep blue color.

Beispiel 2Example 2

Zu einer Spinnmasse, die aus 1000 kg Acetylcellulose in der erforderlichen Menge Aceton besteht, gibt man eine acetonische Lösung von 10 kg N-Methyldiäthanolamin-dibenzyläther der FormelTo a spinning mass made from 1000 kg of acetyl cellulose consists in the required amount of acetone, an acetone solution of 10 kg of N-methyl diethanolamine dibenzyl ether is added the formula

(G6H5 — CH2 — O — CH2 — CH2)2NCH3 (G 6 H 5 - CH 2 - O - CH 2 - CH 2 ) 2 NCH 3

und verspinnt die Masse dann in üblicher Weise.and then spun the mass in the usual way.

50 kg der so erhaltenen Fasern werden 1 Stunde bei 85° in 1000 1 eines wäßrigen Bades gefärbt, das 0,5 kg feinverteiltes 1, 4-Diaminoanthrachinon enthält. Man erhält eine helle Violettfärbung von sehr guter Abgasechtheit.50 kg of the fibers thus obtained are dyed for 1 hour at 85 ° in 1000 l of an aqueous bath that Contains 0.5 kg of finely divided 1,4-diaminoanthraquinone. A light violet color of very is obtained good exhaust gas fastness.

80 Beispiel 3 80 Example 3

loo g eines Acetatreyonstranges werden in üblicher Weise 1 Stunde bei 75° mit einem Bade gefärbt, das in 21 Wasser 0,5 g feinverteiltes N, N'-Dimethyli, 4-diaminoanthrachinon enthält. Nach dem Spülen behandelt man die Fasern 1Z2 Stunde bei 70° in einem frischen Bad, das in 21 Wasser 5 g Monocamphylmethyläther des N-Methyldiäthanolamins der Formel100 g of an acetate red strand are dyed in the usual way for 1 hour at 75 ° with a bath which contains 0.5 g of finely divided N, N'-dimethyli, 4-diaminoanthraquinone in 21 water. After rinsing, the fibers are treated 1 Z 2 hours at 70 ° in a fresh bath containing 21 g of water in 5 Monocamphylmethyläther of N-Methyldiäthanolamins of formula

N(CH3) — CH2 — CH2—OHN (CH 3) - CH 2 - CH 2 -OH

Beispiel 7Example 7

100 g eines Acetatreyongewebes werden 1 Stunde bei 8o° mit 21 eines wäßrigen Bades gefärbt, das 2 g feinverteiltes N, N'-Di-(oxyäthyl)-i, 4-diamino-5, 8-dioxyanthrachinon und 1,5 g feinverteiltes N, N-Bis-(pnenyImercaptoäthyl)-N-methylamin der Formel100 g of an Acetatreyonewebes are 1 hour colored at 80 ° with 21 of an aqueous bath containing 2 g finely divided N, N'-di (oxyethyl) -i, 4-diamino-5, 8-dioxyanthraquinone and 1.5 g of finely divided N, N-bis (pnenyImercaptoethyl) -N-methylamine the formula

(C6H5 — S — CH2 — CH2 —)2N — CH3 (C 6 H 5 - S - CH 2 - CH 2 -) 2 N - CH 3

enthält. Die erhaltenen blaugrünen Färbungen sind sehr gut abgasecht.contains. The blue-green colorations obtained are very resistant to emissions.

Beispiel 8Example 8

Man färbt 100 g eines Acetatreyongewebes 1 Stunde bei 75° mit 3 1 eines wäßrigen Bades, das 0,5 g feinverteiltes i-Amino-2-methoxy-4-oxyanthrachinon und 2 g feinverteiltes N, N-Diäthyl-N-(phenylmercaptoäthyl)-amin der Formel100 g of an acetate gray fabric are dyed for 1 hour at 75 ° with 3 l of an aqueous bath containing 0.5 g of finely divided i-amino-2-methoxy-4-oxyanthraquinone and 2 g of finely divided N, N-diethyl-N- (phenylmercaptoethyl) amine of the formula

(C2Hs)2N-CH2-CH2-S-C6H5 (C 2 Hs) 2 N-CH 2 -CH 2 -SC 6 H 5

enthält. Die erhaltene Rosafärbung ist sehr gut abgasecht.contains. The pink color obtained is very resistant to emissions.

Beispiel 9Example 9

100 g eines Acetatreyonstranges werden 1 S.tunde bei 75° in 2 1 eines wäßrigen Bades gefärbt, das 2,5 g feinverteiltes 1, 4, 5, 8-Tetra-(methylamino)-anthrachinon enthält. Nach dem Spülen wird der Strang 20 Minuten bei 8o° mit einem frischen Bade nachbehandelt, das in 21 Wasser 1,5 g feinverteiltes N, N'-Bis-(phenylmercaptoäthyl)-piperazin enthält. Die tiefblaue Färbung wird durch die Nachbehandlung sehr gut abgasecht.100 g of an Acetatreyon strand are 1 hour at 75 ° colored in 2 liters of an aqueous bath containing 2.5 g of finely divided 1, 4, 5, 8-tetra (methylamino) anthraquinone contains. After rinsing, the strand is treated with a fresh bath for 20 minutes at 80 °, which contains 1.5 g of finely divided N, N'-bis (phenylmercaptoethyl) piperazine in 21 water. The aftertreatment makes the deep blue color very resistant to emissions.

Beispiel ίοExample ίο

Man färbt ioo g eines Acetatreyongewebes ι Stunde bei 80° mit 31 eines wäßrigen Bades, das 1,5 g feinverteiltes i, 4-Diaminoanthrachinon und 2 g N, N-Bis-(phenoxyäthyI)-methylamin der Formel100 g of Acetatreyonewebes are dyed for ι hour at 80 ° with 31 of an aqueous bath, the 1.5 g of finely divided i, 4-Diaminoanthraquinone and 2 g of N, N-bis (phenoxyäthyI) methylamine of the formula

(C6H5 — O — CH2 — CH2)2N — CH3 (C 6 H 5 - O - CH 2 - CH 2 ) 2 N - CH 3

enthält. Man erhält eine sehr gut abgasechte Violettfärbung. contains. A violet coloration which is very fast to exhaust gases is obtained.

(C6H5-CH2-O-CH2-(C 6 H 5 -CH 2 -O-CH 2 -

enthält. Das Gewebe wird in mittelblauem Ton sehr gut abgasecht gefärbt.contains. The fabric is dyed very well in a medium blue shade, which is very resistant to emissions.

Beispiel 12Example 12

Man behandelt 100 g Acetatreyonstrang 1 Stunde bei 80° mit 2 1 eines wäßrigen Bades, das 0,5 g feinverteiltes i, 4, 5-Triaminoanthrachinon und 3 g eines ao aminogruppenhaltigen Äthers der Formel100 g of acetate red strand are treated for 1 hour at 80 ° with 2 l of an aqueous bath containing 0.5 g of finely divided i, 4, 5-triaminoanthraquinone and 3 g of one ao amino group-containing ether of the formula

CH2
- N — CH9 — CHa — O — CH, — C.H,
CH 2
- N - CH 9 - CH a - O - CH, - CH,

Beispiel 11 go Example 11 go

100 g eines Acetatreyongewebes werden 1 Stunde bei 75° mit 3 1 eines wäßrigen Bades gefärbt, das 1 g feinverteiltes i-Amino-4-methylaminoanthrachinon-2-carbonsäureamid und 2 g feinverteilten Dibenzyläther des Triäthanolamins100 g of an Acetatreyonewebes are 1 hour colored at 75 ° with 3 l of an aqueous bath containing 1 g finely divided i-amino-4-methylaminoanthraquinone-2-carboxamide and 2 g of finely divided dibenzyl ether of triethanolamine

in feinverteilter Form enthält. Der Strang wird sehr gut abgasecht hellblau gefärbt.contains in finely divided form. The strand is dyed light blue, which is very good in terms of exhaust gas resistance.

CH2)2N — CH2 — CH2 — OHCH 2 ) 2 N - CH 2 - CH 2 - OH

Beispiel 13Example 13

Man färbt 100 g eines Acetatreyongewebes in ι Stunde bei 80° in 41 eines wä!?.dgen Bades, das 1 g feinverteütes 1,4-Di-(methylamino)-anthrachinon und g feinverteütes N, N'-Bis-(/3-phenoxyäthyl)-piperazin enthält. Die entstehende blaue Färbung ist sehr gut abgasecht.100 g of an Acetatreyonewebes are dyed in ι hour at 80 ° in 41 a!?. Dgen bath, which 1 g finely dispersed 1,4-di- (methylamino) -anthraquinone and g finely dispersed N, N'-bis (/ 3-phenoxyethyl) piperazine contains. The resulting blue color is very resistant to emissions.

Claims (1)

PATENTANSPRUCH:PATENT CLAIM: Weiterbildung des Verfahrens des Patents 949 562 zur Verbesserung der· Abgasechtheit von gefärbten Cellulosederivaten, dadurch gekennzeichnet, daß man den Cellulosederivaten vor oder nach dem Färben oder im Färbebade selbst an Stelle der im Hauptpatent verwendeten aminogruppenhaltigen Carbonsäureester kleine Mengen von aminogruppenhaltigen Äthern oder Thioäthern einverleibt.Further development of the process of patent 949 562 to improve the exhaust gas fastness of colored cellulose derivatives, characterized in that the cellulose derivatives before or after dyeing or in the dye bath itself instead of those used in the main patent amino group-containing carboxylic acid esters or small amounts of amino group-containing ethers Incorporated thioethers. © 609 550/441 7.56 (609 756 1.57)© 609 550/441 7.56 (609 756 1.57)
DEB30665A 1954-02-05 1954-04-18 Process for improving the exhaust gas fastness of colored cellulose derivatives Expired DE956216C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB30665A DE956216C (en) 1954-02-05 1954-04-18 Process for improving the exhaust gas fastness of colored cellulose derivatives

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE780764X 1954-02-05
DEB30665A DE956216C (en) 1954-02-05 1954-04-18 Process for improving the exhaust gas fastness of colored cellulose derivatives
DE782785X 1954-09-17

Publications (1)

Publication Number Publication Date
DE956216C true DE956216C (en) 1957-01-17

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Country Status (1)

Country Link
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