WO1997029235A1 - Procede de teinture de filaments polyamide - Google Patents
Procede de teinture de filaments polyamide Download PDFInfo
- Publication number
- WO1997029235A1 WO1997029235A1 PCT/FR1997/000237 FR9700237W WO9729235A1 WO 1997029235 A1 WO1997029235 A1 WO 1997029235A1 FR 9700237 W FR9700237 W FR 9700237W WO 9729235 A1 WO9729235 A1 WO 9729235A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filaments
- dye
- polyamide
- dyes
- carried out
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/04—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers
- D01F11/08—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/02—Material containing basic nitrogen
- D06P3/04—Material containing basic nitrogen containing amide groups
- D06P3/24—Polyamides; Polyurethanes
- D06P3/241—Polyamides; Polyurethanes using acid dyes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P7/00—Dyeing or printing processes combined with mechanical treatment
- D06P7/005—Dyeing combined with texturising or drawing treatments
Definitions
- the present invention relates to a process for dyeing filaments obtained by spinning in a molten medium a composition based on polyamide. It relates more particularly to a process comprising the step of dyeing the filaments integrated into the stretching process thereof.
- Polyamide filaments are generally obtained by spinning in a molten medium a composition comprising, as main polymeric material, a polyamide.
- the filaments obtained are cooled to a temperature below the glass transition temperature (Tg) of the polymer and then collected in the form of multifilament yarns or rovings.
- Tg glass transition temperature
- the filaments thus obtained are either used for the manufacture of articles such as carpets, fabrics, etc., or for the manufacture of fibers by cutting multi-filament wicks.
- the filaments are dyed either by incorporating pigments into the polyamide composition before spinning, or by impregnating the already drawn filaments or fibers with dyes which are dispersed or in solution in a solvent.
- Polyamide filaments are generally dyed with soluble dyes. The dyeing step can be carried out on the finished article, for example the carpet.
- the penetration and fixing of the dye are obtained either by application of the dye at high temperature, or by heat treatment of the stretched filaments to allow diffusion of the dye in the mass of the filament.
- These methods apply to disperse dyes and more particularly to dye polyester filaments. These methods do not make it possible to dye filaments with soluble dyes such as those used for dyeing polyamide filaments.
- British patent 1,094,725 also describes a process consisting in applying a disperse dye to a filament before or after the drawing step. To penetrate the dye into the mass of the filament, the latter is then heat treated to obtain a shrinkage of at least 10%. This process is difficult to apply industrially because it requires modifying the installations for drawing the filaments and does not make it possible to obtain high mechanical properties. Indeed, to obtain the shrinkage rate necessary for the diffusion of the dye, the stretching tensions must be limited.
- the Applicant proposes a process comprising the dyeing of the polyamide filaments integrated into the stretching process thereof.
- the process of the invention makes it possible to dye the filaments without reducing the productivity of the existing drawing processes and without modifying them.
- the invention provides a process for the manufacture of filaments obtained by spinning in a molten medium a composition based on polyamide, and drawing of these comprising a dyeing step integrated into the drawing step.
- the method of the invention further comprises the drawing step, the following steps: i) taking up of the filaments obtained by spinning a composition based on polyamide, advantageously gathered in the form of threads, web, cable or wick. ii) Application of at least one dye in solution to said collection of filaments, iii) Heating of said filaments to a temperature at least higher than the Tg of the polyamide composition. iv) Washing the filaments, before or after stretching them, and v) Storage of the filaments produced in an appropriate form. The appropriate storage depends on the type of collection of the filaments.
- this thread is advantageously returned to spools or beams after having been possibly subjected to a crimping or texturing process.
- the filaments collected in the form of cables or wicks can be, after having been possibly subjected to a crimping process, stored in containers to be used as supply cables in the flocking processes or in the short fiber manufacturing processes or long. It is also possible to produce these fibers by feeding cables, dyed sheets according to the method of the invention in a cutting device without storage or intermediate recovery.
- the method of the invention therefore makes it possible to obtain dyed filaments during the drawing process, with the application of dyes, advantageously before the effective drawing of the filaments, in other words before the structural rearrangement of the macromolecular chains together.
- the filaments are, before storage, fixed by a heat treatment, carried out for example with water vapor at a temperature above 100 ° C., for a duration greater than one minute
- This thermal fixing makes it possible in particular to fix the mechanical properties such as shrinkage and also the deformations imposed on the filaments such as the fnsures or twists in the case where a fnsage step is provided for in the process.
- This thermal fixing also makes it possible to obtain a diffusion of the dye in the heart of the filament
- step m) of heating the filaments at the outlet of step n) of dyeing allows fixing of at least part of the dye on the surface of the filament, and penetration of the latter onto a penpale crown. thin
- the diffusion of the dye into the core of the filament can advantageously be carried out during the thermal fixing step
- the dyes are dyes soluble in a solvent, advantageously water.
- a solvent advantageously water.
- dyes mention may be made, for example, of the "Acid Yellow” dyes No. 246. 219, 240, 236, 242, 137, "Acid Orange” n ° 43, 67, 108, 127, “Acid brown” n ° 298, “Acid red” n ° 277, 299, 361, "Acid Blue” n ° 113, 286, 277, 350, "Acid Black” n ⁇ 60, 132. 218 It is also possible to use mixtures of dyes To improve the fixing of the dye on the filament, additives such as benzyl alcohol can be added to the solution at concentrations of a few grams per liter to several tens of grams per liter
- additives usually added in dye baths such as "anti-frosting” agents, wetting agents, natural or synthetic thickeners, acid generators may also be present in the dye solution suitable for the process. of invention
- the dyeing solution is applied to the filaments gathered advantageously in the form of sheets, threads, rovings or cables by passing them through a dye bath, or by spraying the dye bath on the assemblies of filaments, called ⁇ -apres cables for clarity.
- Other application techniques can be used without departing from the scope of the invention
- the cables are then expnmes by the usual techniques such as padding, for example
- the filaments at the outlet of step ii) of dyeing are heated to a temperature higher than the glass transition temperature (Tg) of the polyamide composition, for a brief period of duration greater than 5 seconds and advantageously between 5 and 60 seconds.
- This heating can be achieved by any means.
- this heating is carried out by treatment with an atmosphere saturated with water vapor.
- the temperature of this vapor is usually 100 ° C.
- higher temperature water vapor can be used at pressures above atmospheric pressure. This heat treatment makes it possible to fix a certain quantity of dye on the surface of the filaments without fixing the structure of the latter.
- the filaments obtained are generally subjected to drawing which can be carried out cold or at a higher temperature. This drawing is carried out by means of conventional drawing benches and known in the art.
- the stretching rate applied is generally between 2 and 5.
- the filaments can also be subjected to crimping or texturing according to known techniques.
- the filaments obtained by the invention are filaments obtained by spinning in a molten medium a composition based on polyamide.
- polyamides of the invention there may be mentioned aliphatic polyamides such as hexamethylene polyadipamide, also called PA 66, polycaproamide called PA 6, their copolymers or their mixtures.
- These polyamides may also include other repeating units such as aromatic sulfonate units such as the repeating unit derived from 5-isophthalic acid or the like, or units derived from other dicarboxylic acids such as iso or terephthalic acids or d 'other diamines.
- any polyamide which can be spun and dyed with soluble dyes can be used for the manufacture of filaments according to the invention.
- the process of the invention applies more particularly to the manufacture of multifilament cables intended for use in the manufacture of short or long fibers, whether or not crimped, or of "BCF" (Bulk Continuous Filaments) yarns in the manufacture of carpets, or finally cables for flock.
- Short or long fibers, crimped or not are used in particular for the manufacture of fiber yarns, or for textile and nonwovens uses.
- This cable made up of unstretched filaments is fed into a process comprising a dyeing step.
- This dyeing is carried out, in the example illustrated, by padding in a dye bath.
- This dye bath includes a dye such as "LANASYNE Navy Blue SBL, and / or LANASYNE Brown SGL” sold by the company CLARIANT.
- Benzyl alcohol as a promoter for fixing the dye on the filament and also anti-icing additives ("antifrosting") such as TANAPRINT PN "sold by the company TANATEX.
- the bath temperature is from 15 to 50 ° C, preferably 20 ° C, while its pH is between 4 and 8, preferably equal to 7.
- the duration of passage of the cable in the dye bath is not critical, and is of the order of 1 to 10 seconds, preferably 5 seconds.
- the cable impregnated with dye is taken up by driving rollers, and compressed between two rollers to remove the excess dye bath entrained with the cable, according to the padding technique.
- the cable is then taken up by rollers in a washing or rinsing zone which is carried out by passing the wick through one or more water tanks mounted in series.
- a flow of water is ensured in the tanks, against the current with respect to the direction of travel of the cable.
- the cable can be wrung out before being drawn into a drawing bench, when the latter is carried out in air, as in the example illustrated.
- the drawing bench is a conventional device comprising several pairs of rollers driven at different speeds and capable of applying a drawing rate of the order of 2 to 5 to the wick.
- the draw ratio is equal to 3.
- the drawn cable can then be subjected to a finishing step such as crimping. After drying it can either be stored in pots or fed into a cutting device to make short or long fibers.
- the fibers, rovings, cables or windings thus produced are subjected to a heat fixing treatment for a relatively long period.
- This heat treatment is advantageously carried out with water vapor at 120 ° C for a period equal to 10 min. During this heat treatment, the dye diffuses throughout the thickness of the filament.
- Comparative tests were also carried out by dyeing a wick identical to that used for tests 1 to 9. The conditions for these tests are collated in Table II below.
- the dyeing properties of the dyed cables were determined according to the methods described above. They are collated in Table III below:
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Coloring (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97903420A EP0934439A1 (fr) | 1996-02-09 | 1997-02-06 | Procede de teinture de filaments polyamide |
AU17985/97A AU1798597A (en) | 1996-02-09 | 1997-02-06 | Polyamide filament dyeing method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR96/01830 | 1996-02-09 | ||
FR9601830A FR2744734B1 (fr) | 1996-02-09 | 1996-02-09 | Procede de teinture de filaments polyamide |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997029235A1 true WO1997029235A1 (fr) | 1997-08-14 |
Family
ID=9489197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1997/000237 WO1997029235A1 (fr) | 1996-02-09 | 1997-02-06 | Procede de teinture de filaments polyamide |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0934439A1 (fr) |
AU (1) | AU1798597A (fr) |
FR (1) | FR2744734B1 (fr) |
WO (1) | WO1997029235A1 (fr) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB937798A (en) * | 1961-03-21 | 1963-09-25 | Monsanto Chemicals | Method for introducing colorants into polyamide fibers |
US3241906A (en) * | 1960-12-28 | 1966-03-22 | Ici Ltd | Dyeing process |
US3434189A (en) * | 1966-08-02 | 1969-03-25 | Klinger Mfg Co Ltd | Method of continuously dyeing and stretching undrawn yarn |
FR2253870A1 (fr) * | 1973-12-06 | 1975-07-04 | Wtz Trikotagen & Struempfe Veb | |
GB2023193A (en) * | 1978-06-19 | 1979-12-28 | Chevron Res | Dyeing of Polyamide Yarn and Apparatus Therefor |
JPS63105194A (ja) * | 1986-10-20 | 1988-05-10 | 東レ株式会社 | ナイロン着色原糸の製造方法 |
EP0631007A1 (fr) * | 1993-05-17 | 1994-12-28 | Hoechst Celanese Corporation | Procédé de teinture de fibre synthétique |
-
1996
- 1996-02-09 FR FR9601830A patent/FR2744734B1/fr not_active Expired - Fee Related
-
1997
- 1997-02-06 AU AU17985/97A patent/AU1798597A/en not_active Abandoned
- 1997-02-06 EP EP97903420A patent/EP0934439A1/fr not_active Withdrawn
- 1997-02-06 WO PCT/FR1997/000237 patent/WO1997029235A1/fr not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3241906A (en) * | 1960-12-28 | 1966-03-22 | Ici Ltd | Dyeing process |
GB937798A (en) * | 1961-03-21 | 1963-09-25 | Monsanto Chemicals | Method for introducing colorants into polyamide fibers |
US3434189A (en) * | 1966-08-02 | 1969-03-25 | Klinger Mfg Co Ltd | Method of continuously dyeing and stretching undrawn yarn |
FR2253870A1 (fr) * | 1973-12-06 | 1975-07-04 | Wtz Trikotagen & Struempfe Veb | |
GB2023193A (en) * | 1978-06-19 | 1979-12-28 | Chevron Res | Dyeing of Polyamide Yarn and Apparatus Therefor |
JPS63105194A (ja) * | 1986-10-20 | 1988-05-10 | 東レ株式会社 | ナイロン着色原糸の製造方法 |
EP0631007A1 (fr) * | 1993-05-17 | 1994-12-28 | Hoechst Celanese Corporation | Procédé de teinture de fibre synthétique |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Section Ch Week 8824, Derwent World Patents Index; Class A32, AN 88-165905, XP002018049 * |
Also Published As
Publication number | Publication date |
---|---|
FR2744734A1 (fr) | 1997-08-14 |
EP0934439A1 (fr) | 1999-08-11 |
FR2744734B1 (fr) | 1998-04-10 |
AU1798597A (en) | 1997-08-28 |
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