EP0178255B1 - Procédé de fixage de teintures ou impressions - Google Patents

Procédé de fixage de teintures ou impressions Download PDF

Info

Publication number
EP0178255B1
EP0178255B1 EP85810429A EP85810429A EP0178255B1 EP 0178255 B1 EP0178255 B1 EP 0178255B1 EP 85810429 A EP85810429 A EP 85810429A EP 85810429 A EP85810429 A EP 85810429A EP 0178255 B1 EP0178255 B1 EP 0178255B1
Authority
EP
European Patent Office
Prior art keywords
process according
printed
dyes
fixation
textile materials
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
EP85810429A
Other languages
German (de)
English (en)
Other versions
EP0178255A1 (fr
Inventor
Andres Schaub
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
Original Assignee
Ciba Geigy AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ciba Geigy AG filed Critical Ciba Geigy AG
Publication of EP0178255A1 publication Critical patent/EP0178255A1/fr
Application granted granted Critical
Publication of EP0178255B1 publication Critical patent/EP0178255B1/fr
Expired legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06BTREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B19/00Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00
    • D06B19/0005Fixing of chemicals, e.g. dyestuffs, on textile materials
    • D06B19/0047Fixing of chemicals, e.g. dyestuffs, on textile materials by air steam
    • 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
    • D06P5/20Physical treatments affecting dyeing, e.g. ultrasonic or electric
    • D06P5/2066Thermic treatments of textile materials
    • D06P5/2077Thermic treatments of textile materials after dyeing
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S8/00Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
    • Y10S8/916Natural fiber dyeing
    • Y10S8/918Cellulose textile

Definitions

  • the present invention relates to a new method for the nuance-stable fixing of azo, metal complex azo and metallized formazan dyes on textile materials with hot steam.
  • the present invention thus relates to a process for the nuance-stable fixing of azo, metal complex azo and metallized formazan dyes on textile materials with hot water vapor, which is characterized in that textile materials dyed or printed with these dyes are dried and then fixed in a hot water vapor atmosphere , which contains 0.5 to 5 volume percent air.
  • the steam-fixing method according to the invention gives shades or prints with stable shades;
  • an air content of at least 0.5% by volume is necessary for certain dye classes in order to avoid shade fluctuations in the colors or prints due to steam fixation.
  • the intermediate drying of the dyed or printed textile materials before the steaming fixation is mandatory.
  • a preferred embodiment of the method according to the invention is characterized in that textile materials dyed or printed with reduction-sensitive dyes, in particular textile materials dyed or printed with water-insoluble and / or water-soluble dyes, and especially textile materials dyed or printed with water-soluble reactive dyes.
  • An embodiment of the method according to the invention is characterized in that fixation is carried out in a water vapor atmosphere which contains 0.5 to 5 volume percent air, in particular 1.5 to 5 volume percent air and especially 1.5 to 3.5 volume percent air.
  • an air content of at least 1 percent by volume has proven to be particularly advantageous.
  • Another preferred embodiment of the method according to the invention is characterized in that it is fixed under normal pressure.
  • a temperature between 100 ° and 220 ° C., in particular 100 ° to 105 ° C. or 150 ° to 190 ° C., based on a pressure of 1 bar, has been found to be particularly advantageous for fixing in a hot steam atmosphere proven.
  • a particularly preferred embodiment of the method according to the invention is characterized in that printed textile materials are used, in particular those which are printed with printing pastes containing a thickener that promotes reduction.
  • printed textile materials with dye mixtures containing at least one water-soluble reactive dye and at least one disperse dye are used in the process according to the invention as printed textile materials from blended fabrics, in particular printed polyester / cellulose blended fabrics and, above all, printed cellulose fibers.
  • a polyester / cellulose blend fabric which is printed with a printing paste containing at least one water-soluble reactive dye, at least one disperse dye, alginate and fixing alkali is very particularly preferably used as the printed textile material made of polyester / cellulose blend fabric. and above all a polyester / cellulose blended fabric is used which is printed with a printing paste containing at least one fiber-reactive, sulfo-containing azo or metal complex azo dye, at least one azo dispersion dye, alginate and a fixing alkali and in a water vapor atmosphere under normal pressure at 150 ° to 220 ° is fixed, which contains 1.5 to 3.5 percent by volume of air.
  • Textile materials are those made from natural and synthetic fibers and mixtures thereof. Examples include: cotton, linen (bleached), viscose, polynosic, copper synthetic silk, wool, silk, synthetic polyamide, polyester and polyurethane fibers, wool / polyamide, wool / polyester, wool / cellulose, wool / Polyacrylonitrile and polyester / cellulose blended fabrics.
  • Synthetic polyamide, polyester, cellulose fibers and polyester / cellulose blended fabrics are preferably used as textile materials.
  • the textile materials are dyed or printed by methods known per se, dried and then fixed in accordance with the method according to the invention.
  • the fixation takes place in one of the conventional continuous or discontinuous dampers known per se, which must have a device for the targeted addition of air.
  • the air inlet can be regulated, for example, via a valve.
  • the water vapor state in the process according to the invention corresponds to the steam state customary in industrial dampers, such as Saturated steam and superheated steam.
  • Steaming time and steam temperature depend on the dyes and textile material used.
  • textile materials are used which are dyed or printed with azo, metal complex azo and metallized formazan dyes.
  • These dyes can be water-soluble or water-insoluble.
  • Suitable disperse dyes come e.g. B. the dyes known from the Color Index as Disperse Dyes.
  • the radical Q 1 is especially a radical of the benzene series, such as phenyl or sulfophenyl, or an alkyl radical, such as. B. methyl, a low molecular weight alkanoyl group, such as. B. Actyl, a carbalkoxy group having up to 4 carbon atoms, a benzoyl group or a heterocyclic radical, and A and B are preferably phenyl radicals substituted by sulfo, sulfonamido or alkylsulfonyl groups.
  • Y 1 and Y 2 are mainly OH and COOH groups. Suitable heavy metals are copper, chromium, cobalt and nickel.
  • Cellulose fibers printed with fiber-reactive azo dyes are preferably fixed according to the inventive method; printed polyester / cellulose blended fabrics are also preferably fixed with dye mixtures containing at least one fiber-reactive azo dye and at least one dispersion azo dye.
  • Fiber-reactive radicals X are to be understood as those which react with the hydroxyl groups of cellulose, the amino, carboxy, hydroxyl and thiol groups in wool and silk, or with the amino and possibly carboxy groups of synthetic polyamides to form covalent chemical bonds capital.
  • X is preferably a fiber-reactive radical of the aliphatic, aromatic or heterocyclic series which is bonded to the radical D directly or via a bridge member.
  • X is preferably directly or via an optionally monoalkylated amino group, such as, for example, -NH-, -N (CH 3 ) -, -N (C 2 H 5 ) - or -N (C 3 H 7 ) - or via a bridge member containing an amino group bound to the radical D, where D is an azo, metal complex azo or metallized formazan dye.
  • an optionally monoalkylated amino group such as, for example, -NH-, -N (CH 3 ) -, -N (C 2 H 5 ) - or -N (C 3 H 7 ) - or via a bridge member containing an amino group bound to the radical D, where D is an azo, metal complex azo or metallized formazan dye.
  • fiber-reactive radicals X of the heterocyclic series are to be mentioned, such as. B. 2,4-dichlorotriazinyl-6, mono-, di- or trihalopyrimidinyl residues, such as 2,4-dichloropyrimidinyl-6, 2,4,5-trichloropyrimidinyl-6-, 2,4-dichloro-5- nitro- or 5-methyl- or -5-carboxymethyl- or -5-carboxy- or -5-cyano- or -5-vinyl- or -5-sulfo- or -5-mono-, -di or trichloromethyl- or 5-methylsulfonylpyrimidinyl-6-, 2,5-dichloro-4-methylsufonyl-pyrimidinyl-6-, 2-fluoro-4-pyrimidinyl-, 2,6-difluoro-4-pyrimidinyl-, 2,6-difluoro -5-chloro-4-pyrimi
  • Azo, metal complex azo or metallized formazan dyes which dyed or printed on textile materials in conventional dampers with an air content of less than 0.3 percent by volume to at least 1% during the fixing process are particularly suitable as strongly reduction-sensitive dyes.
  • a major advantage of the method according to the invention is that both with continuous and discontinuous steam fixation there are no nuance fluctuations and a consistently high yield of the dyes used is ensured. This advantage is particularly important for light shades, i. H. Textile materials that are dyed or printed with less than 0.5% dye based on the fiber weight.
  • Another advantage of the method according to the invention is that textile materials can be used which are printed with printing pastes which contain thickeners with a reducing property.
  • a damping chamber for fixing dyed or printed textile materials in a hot steam atmosphere serves as a means for carrying out the method according to the invention, the damping chamber containing a device for admixing air.
  • a valve for example, can be used as a device for adding air.
  • the air is preferably added to the water vapor via a valve that can be regulated from the outside by a nozzle system.
  • DE-A-1 460 356 describes a process which differs in a characteristic manner from the process according to the invention in that the fiber material is first dried in a steam-air mixture and then treated in the presence of pure superheated steam.
  • the following examples serve to illustrate the invention.
  • the parts are parts by weight and the percentages are percentages by weight.
  • the temperatures are given in degrees Celsius.
  • the relationship between parts by weight and parts by volume is the same as that between grams and cubic centimeters.
  • This printing paste is used to print a cotton fabric in a conventional manner (flat or rotary film printing or Rouleaux printing) and then drying it.
  • the printed fabric is steamed for 8 minutes in a water vapor atmosphere without excess pressure (- 1 bar) at 100-102 ° C.
  • This water vapor contains 1.5-2% by volume of air.
  • the resulting prints have a blue-gray shade after their usual post-washing treatment.
  • saturated steam means a saturated water vapor atmosphere at 100 to 102 ° C, which contains 1.5 to 2 percent by volume of air.
  • Example 7 A printing paste is prepared according to the following recipe: 1.5 g of the dye of the formula
  • This printing paste is used to print a knitted fabric made of synthetic polyamide in a conventional manner and then drying it.
  • the printed knitted fabric is fixed for 40 minutes in a water vapor atmosphere without excess pressure (- 1 bar) at 100-102 ° C and an air content of 1.5 to 2 percent by volume. The result is a level, level-stable print.
  • Example 8 A printing paste is prepared according to the following recipe: 1.5 g of the dye of the formula
  • This printing paste is used to print a knitted fabric made of synthetic polyamide in a conventional manner and then drying it. To the fixie The printed knitted fabric is fixed for 40 minutes in a water vapor atmosphere without excess pressure (- 1 bar) at 100 -102 ° C and an air content of 1.5 to 2 percent by volume. The result is a level, level-stable print.
  • the unfixed portion of the dye is removed by repeated cold and warm rinsing. A level print of gray-blue stable, reproducible shade is obtained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Coloring (AREA)

Claims (16)

1. Procédé pour fixer, sans modification des nuances, des colorants azoïques, des colorants azoïques à complexe métallique et des colorants de formazan métallés sur des matières textiles par la vapeur d'eau chaude, caractérisé en ce que l'on sèche les matières textiles teintes ou imprimées à l'aide de ces colorants et on effectue le fixage dans une atmosphère de vapeur d'eau chaude contenant de 0,5 à 5% en volume d'air.
2. Procédé selon la revendication 1, caractérisé en ce que l'on emploie des matières textiles teintes ou imprimées avec des colorants sensibles à la réduction.
3. Procédé selon la revendication 1, caractérisé en ce que l'on effectue le fixage dans une atmosphère de vapeur d'eau contenant au moins 1 % en volume d'air.
4. Procédé selon la revendication 1, caractérisé en ce que l'on effectue le fixage dans une atmosphère de vapeur d'eau contenant de 1,5 à 5% en volume d'air.
5. Procédé selon la revendication 4, caractérisé en ce que l'on effectue le fixage dans une atmosphère de vapeur d'eau contenant de 1,5 à 3,5% en volume d'air.
6. Procédé selon la revendication 1, caractérisé en ce que l'on emploie des matières textiles teintes ou imprimées avec des colorants solubles et/ou insolubles dans l'eau.
7. Procédé selon la revendication 6, caractérisé en ce que l'on emploie des matières textiles teintes ou imprimées avec des colorants réactifs solubles dans l'eau.
8. Procédé selon l'une des revendication 1, 6 et 7, caractérisé en ce que l'on emploie des matières textiles imprimées.
9. Procédé selon l'une des revendication 1 et 6, caractérisé en ce que l'on emploie des matières textiles consistant en tissus mélangés, imprimées avec des mélanges de colorants qui contiennent au moins un colorant réactif soluble dans l'eau et au moins un colorant dispersé.
10. Procédé selon la revendication 8, caractérisé en ce que l'on emploie des fibres cellulosiques imprimées.
11. Procédé selon la revendication 9, caractérisé en ce que l'on emploie des tissus mélangés polyester-cellulose imprimés.
12. Procédé selon la revendication 11, caractérisé en ce que l'on emploie un tissu mélangé polyester/cellulose imprimé avec une pâte d'impression qui contient au moins un colorant réactif soluble dans l'eau, au moins un colorant dispersé, un alginate et un alcali de fixage.
13. Procédé selon la revendication 1, caractérisé en ce que l'on effectue le fixage à pression normale.
14. Procédé selon la revendication 1, caractérisé en ce que l'on effectue le fixage à une température de 100 à 200 °C.
15. Procédé selon la revendication 1, caractérisé en ce que l'on emploie des matières textiles imprimées avec des pâtes d'impression qui contiennent un agent épaississant qui accélère la réduction.
16. Procédé selon la revendication 1, caractérisé en ce que l'on effecute le fixage sur un tissu mélangé polyester/cellulose, imprimé avec une pâte d'impression qui contient au moins un colorant azoïque à complexe métallique contenant des groupes sulfo et réactif avec les fibres, au moins un colorant azoïque ou azoïque à complexe métallique contenant des groupes sulfo et réactif avec les fibres, au moins un colorant azoïque dispersé, un alginate et un alcali de fixage, dans une atmosphère de vapeur d'eau qui contient 1,5 à 3,5% en volume d'air, à pression normale et à des températures de 150 à 220°C.
EP85810429A 1984-09-28 1985-09-23 Procédé de fixage de teintures ou impressions Expired EP0178255B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4647/84 1984-09-28
CH464784 1984-09-28

Publications (2)

Publication Number Publication Date
EP0178255A1 EP0178255A1 (fr) 1986-04-16
EP0178255B1 true EP0178255B1 (fr) 1989-01-18

Family

ID=4280026

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85810429A Expired EP0178255B1 (fr) 1984-09-28 1985-09-23 Procédé de fixage de teintures ou impressions

Country Status (4)

Country Link
US (1) US4659333A (fr)
EP (1) EP0178255B1 (fr)
JP (1) JPS6183384A (fr)
DE (1) DE3567681D1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59402856D1 (de) * 1993-02-05 1997-07-03 Ciba Geigy Ag Verfahren zum Färben oder Bedrucken von cellulosehaltigen Fasermaterialien
US6513924B1 (en) 2001-09-11 2003-02-04 Innovative Technology Licensing, Llc Apparatus and method for ink jet printing on textiles
US7931699B2 (en) * 2002-12-27 2011-04-26 Hbi Branded Apparel Enterprises, Llc Compositions for spray dyeing cellulosic fabrics
US7033403B2 (en) * 2002-12-27 2006-04-25 Sara Lee Corporation Spray dyeing of garments
US7931701B2 (en) * 2002-12-27 2011-04-26 Hbi Branded Apparel Enterprises, Llc Composition for dyeing of cellulosic fabric
US7931700B2 (en) * 2002-12-27 2011-04-26 Hbi Branded Apparel Enterprises, Llc Composition for dyeing of cellulosic fabric
US7799097B2 (en) * 2003-06-23 2010-09-21 Hbi Branded Apparel Enterprises, Llc Processes for spray dyeing fabrics
US20060265816A1 (en) * 2003-06-23 2006-11-30 Michael Abbott Formers for spray dyeing garments
US8814953B1 (en) 2003-06-23 2014-08-26 Hbi Branded Apparel Enterprises, Llc System and method for spray dyeing fabrics
US10214827B2 (en) 2010-05-19 2019-02-26 Sanford Process Corporation Microcrystalline anodic coatings and related methods therefor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL290222A (fr) * 1962-03-21
DE1460356A1 (de) * 1965-02-18 1969-02-13 Artos Meier Windhorst Kg Verfahren zum kontinuierlichen Faerben von breitgefuehrten Textilbahnen mit Dispersions-Reaktiv- oder aehnlichen Farbstoffen
DE2552562A1 (de) * 1975-01-15 1976-07-22 Sandoz Ag Verfahren zum faerben von zellulosefasern oder daraus hergestellten textilien mit reaktivfarbstoffen
FR2396819A1 (fr) * 1977-07-04 1979-02-02 Inst Tekhn Teplofizik Procede de fixage de colorants sur matiere textile
DE3206895A1 (de) * 1982-02-26 1983-09-15 Hoechst Ag, 6230 Frankfurt Verfahren zum kontinuierlichen faerben von textilen warenbahnen

Also Published As

Publication number Publication date
EP0178255A1 (fr) 1986-04-16
DE3567681D1 (en) 1989-02-23
US4659333A (en) 1987-04-21
JPS6183384A (ja) 1986-04-26

Similar Documents

Publication Publication Date Title
EP0040790B1 (fr) Procédé de teinture et d'impression de matière textile contenant des groupements hydroxyle et/ou carbonamide
EP0437184B1 (fr) Procédé de teinture ou d'impression en trichromie de matières fibreuses textiles contenant de la cellulose
EP0546476B1 (fr) Procédé de préparation d'un matériau fibreux modifié et procédé de teinture du matériau fibreux modifié avec des colorants anioniques
EP0478503A2 (fr) Colorants et mélanges de colorants réactifs avec des fibres et leur utilisation
EP0178255B1 (fr) Procédé de fixage de teintures ou impressions
EP0177449B1 (fr) Procédé d'impression de fibres cellulosiques
EP0144093B1 (fr) Pâtes d'impression, stables au stockage, et leur utilisation
EP0625551B1 (fr) Mélanges de colorants, procédé pour leur préparation et leur utilisation
DE2834998A1 (de) Verfahren zum klotzfaerben oder bedrucken von cellulosefasern mit reaktivfarbstoffen
EP0209494B1 (fr) Procédé de teinture ou d'impression avec une stabilité de nuance
EP0458152A1 (fr) Mélanges de colorants
EP0242324B1 (fr) Procédé de teinture de fibres cellulosiques ayant une égalité de nuance entre les extrémités du tissu
EP0352222B1 (fr) Colorants formazanes réactifs avec les fibres procédé pour leur préparation et leur utilisation
DE4327301A1 (de) Verfahren und Verwendung reaktiver Dispersionsfarbstoffe zum Färben oder Bedrucken aminierter, textiler Baumwoll- und Baumwoll-/Polyester-Mischgewebe
EP0889098A2 (fr) Colorants azoiques, procédépour leur préparation et leur utilisation
DE1644508A1 (de) Verfahren zur Herstellung neuer Anthrachinonfarbstoffe
EP0181293B1 (fr) Procédé de teinture de matières en polyamide synthétique avec des colorants anthraquinone réactifs
EP0580091B1 (fr) Procédé de fabrication d'un matériau fibreux modifié et procédé de teinture de ce matériau fibreux modifié avec des colorants anioniques
EP0969051A1 (fr) Mélanges de colorants réactifs et leur utilisation
DE2728094A1 (de) Neue faserreaktive chromkomplexfarbstoffe, deren herstellung und verwendung
DE2741629A1 (de) Faerbeverfahren
AT202549B (de) Verfahren zum Färben polyhyroxylierter Materialien
DE2451005C3 (de) Verfahren zum reaktiven Färben und Bedrucken von Hydroxygruppen enthaltenden Fasermaterialien
WO1981000111A1 (fr) Composes mono-azoiques reactifs pour fibres, leur procede de production et leur utilisation
AT236902B (de) Verfahren zum Färben und Drucken mit Reaktivfarbstoffen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19850925

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DE FR GB IT LI NL

17Q First examination report despatched

Effective date: 19870811

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE FR GB IT LI NL

REF Corresponds to:

Ref document number: 3567681

Country of ref document: DE

Date of ref document: 19890223

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: SOCIETA' ITALIANA BREVETTI S.P.A.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19930709

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19930722

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19930811

Year of fee payment: 9

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19930930

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19931004

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19931122

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19940923

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19940930

Ref country code: CH

Effective date: 19940930

Ref country code: BE

Effective date: 19940930

BERE Be: lapsed

Owner name: CIBA-GEIGY A.G.

Effective date: 19940930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19950401

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19940923

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19950531

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19950601

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST