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
  • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
  • D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
  • D01F6/84—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyesters
• • 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
  • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
• • 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
  • D06P3/34—Material containing ester groups
  • D06P3/52—Polyesters
  • D06P3/54—Polyesters using dispersed dyestuffs

Definitions

• the present invention relates to the field of polymers, more particularly to the field of polyester fibers, and more specifically relates to a method of manufacturing a colored synthetic fiber, as well as its uses.
• the synthetic fibers come for the most part from petroleum and are generally popular because of their low production cost and their ease of manufacture.
• the main known synthetic fibers are, for example, polyester, polyamide, polyurethane, elastane or acrylic fibers.
• the polyester fiber is formed from a polyester resin having a structure in which a dicarboxylic acid and a diol are polymerized.
• the polyester resin comprises in particular 1% to 20% by moles of diol units derived from isosorbide and 2% to 5% by moles of diol units derived from ethylene glycol, and also comprises 1.3% by weight of an oligomer.
• an additive can be added during the preparation.
• the additive added can be a compound derived from cobalt, such as cobalt acetate, or if necessary, an organic compound such as a compound of anthroquinone type, of perinonic type, of azo type or. methinic type.
• an organic compound such as a compound of anthroquinone type, of perinonic type, of azo type or. methinic type.
• an amount of 1 to 50 ppm must necessarily be observed in order to sufficiently mask the yellowing without altering the physical properties.
• US3223752 relates to polyolefins modified to improve dyeability and spinability.
• this document describes improved fibrogenic polyolefin compositions, as well as polyolefin fibers and filaments exhibiting improved affinity for dyes, in particular disperse dyes, without their physical properties being significantly impaired.
• the improvement is obtained by combining polyolefins with polyesters modified in an amount of 1% to 20% by weight.
• a modified polyester according to this document refers to polyesters prepared from dicarboxylic acids and glycols, the modification being carried out using a mixture of acids or glycols.
• a first object of the present invention relates to a method of manufacturing a colored synthetic fiber comprising the following steps of:
• a semi-crystalline thermoplastic polyester comprising at least one unit 1, 4: 3,6-dianhydrohexitol (A), at least one aliphatic diol unit (B) other than units 1, 4: 3,6- dianhydrohexitol (A) and at least one aromatic dicarboxylic acid unit (C), in which the molar ratio (A) / [(A) + (B) j is at least 0.05 and at most 0.30 , and whose reduced viscosity in solution (35 ° C; orthochlorophenol; 5 g / L of polyester) is greater than 50 mL / g.
• Another object of the invention relates to a synthetic fiber colored with a dispersed dye, said synthetic fiber consisting essentially of semi-crystalline thermoplastic polyester comprising at least one unit 1, 4: 3,6-dianhydrohexitol (A), at least one aliphatic diol unit (B) other than the units 1, 4: 3,6-dianhydrohexitol (A), at least one aromatic dicarboxylic acid (C), in which the molar ratio (A) / [(A) + (B)] is at least 0.05 and at most 0.30, the reduced viscosity of which in solution (35 ° C; orthochlorophenol; 5 g / L of polyester) is greater than 50 mL / g.
• Another object of the invention relates to the use of the colored synthetic fiber described above in the field of furniture, textiles, or sporting goods.
• the present invention thus relates to a method of manufacturing a colored synthetic fiber comprising the following steps of:
• a semi-crystalline thermoplastic polyester comprising at least one unit 1, 4: 3,6-dianhydrohexitol (A), at least one aliphatic diol unit (B) other than units 1, 4: 3,6- dianhydrohexitol (A) and at least one aromatic dicarboxylic acid (C), in which the molar ratio (A) / [(A) + (B) j is at least 0.05 and at most 0.30, whose reduced viscosity in solution (35 ° C; orthochlorophenol; 5 g / L of polyester) is greater than 50 mL / g.
• thermoplastic polyester based on isosorbide and an aqueous solution of at least one disperse dye allows to obtain colored synthetic fibers having a improved dye quality.
• the presence of isosorbide in the polyester according to the invention makes it possible to improve the dye affinity of the synthetic fiber compared to a synthetic fiber based on polyester without isosorbide, while while also maintaining equivalent wash resistance.
• fiber as used in the present invention is synonymous with the terms filaments and yarns and thus includes continuous or discontinuous mono or multifilaments, non-twisted or entangled multifilaments, and basic yarns. . This term also refers only to a fiber of synthetic origin and therefore does not include natural fibers.
• the first step of the process according to the invention consists in providing a semi-crystalline thermoplastic polyester comprising at least one unit 1, 4: 3,6-dianhydrohexitol (A), at least one aliphatic diol unit (B ) other than units 1, 4: 3,6-dianhydrohexitol (A), and at least one unit of terephthalic acid (C), in which the molar ratio (A) / [(A) + (B)] is from 0.05 to 0.30.
• molar ratio (A) / [(A) + (B)] is meant the molar ratio of units 1, 4: 3.6- dianhydrohexitol (A) / sum of units 1, 4: 3.6 -dianhydrohexitol (A) and aliphatic diol units (B) other than units 1, 4: 3,6-dianhydrohexitol (A).
• the molar ratio (A) / [(A) + (B)] is from 0.10 to 0.28, and preferably from 0.15 to 0.25.
• the unit or monomer (A) is a 1, 4: 3,6-dianhydrohexitol and can be chosen from isosorbide, isomannide, isoidide, or a mixture thereof. Isosorbide, isomannide and isoidide can be obtained by dehydration of sorbitol, mannitol and iditol, respectively.
• the unit 1, 4: 3,6-dianhydrohexitol (A) is isosorbide. It is for example marketed by the Applicant under the brand name POLYSORB®.
• the aliphatic diol unit (B) can be a linear, branched or cyclic aliphatic diol. It can also be a saturated or unsaturated aliphatic diol.
• the aliphatic diol is a linear diol chosen from ethylene glycol, 1, 3-propanediol, 1, 4-butanediol, 1, 5-pentanediol, 1, 6-hexanediol , 1, 8-octanediol and / or 1, 10-decanediol.
• the aliphatic diol unit (B) is a saturated branched non-cyclic aliphatic diol.
• the semi-crystalline thermoplastic polyester is free from non-cyclic aliphatic diol units or comprises a molar amount of non-cyclic aliphatic diol units, relative to all of the monomer units of the polyester, less than 1% , preferably the polyester is free from a non-cyclic aliphatic diol unit.
• the aliphatic diol unit (B) is a cyclic aliphatic diol.
• TCDDM decane dimethanol
• 2,2,4 4-tetramethyl-1, 3-
• the aliphatic diol unit (B) is 1, 4-cyclohexanedimethanol.
• the aliphatic diol moiety (B) may be in the ois configuration, in the trans configuration or may be a mixture of diols in the ois and trans configuration.
• the aliphatic diol unit (B) is an unsaturated aliphatic diol such as, for example, cis-2-butene-1, 4-diol.
• the aromatic dicarboxylic acid unit (C) can be chosen from aromatic dicarboxylic acids known to those skilled in the art.
• the aromatic dicarboxylic acid can be a derivative of naphthalates, terephthalates, furanoates, thiophene dicarboxylate, pyridine dicarboxyalt or else of isophthalates or their mixtures.
• the aromatic dicarboxylic acid is a derivative of terephthalates and preferably, the aromatic dicarboxylic acid is terephthalic acid.
• the reduced viscosity in solution of said semi-crystalline thermoplastic polyester is greater than 50 mL / g.
• This reduced viscosity in solution is measured using an Ubbelohde capillary viscometer at 35 ° C in orthodichlorophenol after dissolving the polymer at 130 ° C with stirring, the concentration of polymer introduced being 5 g / L.
• the semi-crystalline thermoplastic polyester has a reduced viscosity in solution of from 50 mL / g to 120 mL / g, preferably from 60 mL / g to 100 mL / g.
• a semi-crystalline thermoplastic polyester particularly suitable for the process according to the invention comprises a molar amount of units 1, 4: 3,6-dianhydrohexitol (A) ranging from 2.5 to 14 mol%, a molar amount of aliphatic diol units (B) other than units 1, 4: 3,6-dianhydrohexitol (A) ranging from 31 to 42.5 mol%, and a molar amount of terephthalic acid units (C) ranging from 45 to 55 mol% .
• the amounts of different units in the polyester can be determined by 1 H NMR or by chromatographic analysis of the mixture of monomers resulting from methanolysis or complete hydrolysis of the polyester, preferably by 1 H NMR.
• the semi-crystalline thermoplastic polyester used according to the invention has a melting point ranging from 200 to 295 ° C, for example from 220 to 285 ° C.
• semi-crystalline thermoplastic polyesters exhibit a glass transition temperature ranging from 40 to 120 ° C, for example from 50 to 115 ° C.
• the glass transition and melting temperatures are measured by conventional methods, in particular using differential scanning calorimetry (DSC) using a heating rate of 10 ° C / min.
• DSC differential scanning calorimetry
• the sample is first of all heated under a nitrogen atmosphere in an open crucible from 10 to 320 ° C (10 ° C.min-1), cooled to 10 ° C (10 ° C. .min-1), then warmed to 320 ° C under the same conditions as the first step.
• the glass transition temperatures are then taken at the mid-point of the second heating.
• the possible melting temperatures are determined on the endothermic peak (start of the peak (in English, onset)) at the first heating.
• the measurement of this heat of fusion consists in subjecting a sample of this polyester to heat treatment at 170 ° C for 16 hours and then evaluate the heat of fusion by DSC by heating the sample to 10 ° C / min.
• the semi-crystalline thermoplastic polyester supplied according to the first step of the process can be in the form of pellets or granules.
• the semi-crystalline thermoplastic polyester is packaged in the form of granules, said granules having a residual humidity level of less than 300 ppm, preferably less than 200 ppm, such as for example approximately 75 ppm.
• These polyesters are particularly well suited for the manufacture of synthetic fibers and make it possible to obtain fibers which have a better dye affinity with disperse dyes and have good washing stability.
• the first step of the process according to the invention comprises providing a mixture of semi-crystalline thermoplastic polyester comprising at least one unit 1, 4: 3,6-dianhydrohexitol (A), at least one aliphatic diol unit (B) other than the units 1, 4: 3,6-dianhydrohexitol (A) and at least one aromatic dicarboxylic acid (C), in which the molar ratio (A) / [(A) + (B)] is at least 0.05 and at most 0.30, the reduced viscosity of which in solution (35 ° C; orthochlorophenol; 5 g / L of polyester) is greater than 50 mL / g.
• the step of preparing the synthetic fiber is carried out from said mixture.
• the second step of the process according to the invention is to prepare the synthetic fiber from the semi-crystalline thermoplastic polyester provided in the previous step.
• the synthetic fiber can be obtained according to methods known to those skilled in the art.
• synthetic fiber can be obtained by melt spinning or by solution processes (wet or dry).
• the synthetic fibers are manufactured by the melt spinning method.
• the manufacture of synthetic fibers by the melt spinning method consists first of melting the polyester in an extruder. The molten material is then sent under pressure through a die made up of a multitude of holes. On leaving the die, the filaments are cooled by air, drawn and coiled. Usually a sizing product is applied to the lower part of the spinning duct.
• the synthetic fiber obtained according to the second step of the process of the invention can be woven or knitted before the dyeing step.
• the third step of the process according to the invention consists in dyeing the synthetic fiber with an aqueous solution of at least one disperse dye.
• the aqueous solution of dispersed dye is also called a "dye bath”.
• a disperse dye is a weakly polar dye which has a relatively small size, on the order of ten microns. This dye, due to its lack of solubilizing groups, is practically insoluble in water which means that it must be applied in the form of an aqueous dispersion containing predominantly particles of dyes.
• this type of dye Prior to placing in aqueous solution, this type of dye can generally be in the form of a paste or powder.
• the disperse dye according to the invention is chosen from disperse dyes of azo type, disperse dyes of anthraquinone type, dyes of methine type, dyes of nitro type, dyes of naphthoquinone type, dyes of aminoketone type and their mixtures.
• the disperse dye is an azo type dye.
• the azo-type dye can in particular be chosen from disazo dyes or monoazo dyes derived from azobenzene such as, for example, the references Dispersed blue 165, C.l. Disperse Orange 5, C.l. Disperse Red 19, or C.l. Disperse Blue 183.
• the disperse dye is an anthraquinone type dye.
• the anthraquinone-type dye can be chosen from carmine, lizarin, purpurine, indanthrene blue, anthraquinone yellow, or anthraquinone red.
• the disperse dye is a mixture of azo-type dye as defined below and of anthraquinone-type dye as defined above.
• anthraquinone-type dyes allow a more uniform dye to be obtained because they have a lower molecular size than azo-type dyes.
• anthraquinone dyes are preferred for light shades and azo dyes are preferred for dark shades.
• the aqueous solution can comprise an amount of 0.01% to 15% of disperse dye, preferably 1 to 10% and very particularly 3 to 5%. The percentage being expressed by weight of dye relative to the total weight of the solution.
• the aqueous solution of disperse dye used for the dyeing step according to the invention can comprise from 0.1 g / L to 10 g / L of dispersing agent.
• the dispersing agent has good wettability properties, thus facilitating the dispersion of the dye in water, but above all it allows a stable dispersion to be maintained during dyeing.
• the dispersing agent can belong to two classes of compounds.
• the first concerns the condensation products of aromatic compounds containing sulphonated groups and the second concerns lignin sulphonates.
• the dyeing step is carried out by soaking in the aqueous solution of disperse dye.
• the aqueous solution of disperse dye used for the dyeing step has a high temperature, that is to say a temperature of 120 ° C to 140 ° C, preferably at a temperature of 130 ° C.
• the aqueous solution of disperse dye used is acidic.
• the term “acid” means a pH of said solution of from 3.5 to 5.5, preferably a pH of from 4 to 5.
• the soaking can advantageously be carried out for a period of 10 to 120 minutes, preferably 20 to 90 minutes, more preferably 30 to 60 minutes.
• the step of dyeing the synthetic fiber is carried out according to the following sequence: maintaining at 60 ° C for 10 min, increasing the temperature at a rate of 1.5 ° C / min up to 80 ° C then at a rate of 1 ° C / min up to 130 ° C, maintain at 130 ° C for 45 min, and finally, decrease in temperature at a rate of 2.5 ° C / min up to 'at 60 ° C.
• the selection of this time / temperature cycle allows optimum dyeing of the synthetic fiber with the dispersed dye.
• the method comprises a step of stripping the dyed synthetic fiber so as to remove the dispersed dye not fixed on said fiber.
• the stripping can be carried out by soaking the synthetic fiber for a period of 15 to 20 min in a bath at a temperature of 65 ° C to 80 ° C, said bath comprising for example a mixture of sodium hydroxide and sodium hydrosulfite.
• the skinning may optionally be followed by a hot rinse and a cold rinse.
• the colored synthetic fiber obtained according to the process of the invention is free from any polymer other than that supplied according to the first step.
• a second object of the invention relates to a synthetic fiber colored with a dispersed dye, said synthetic fiber consisting essentially of a semi-crystalline thermoplastic polyester comprising at least one unit 1, 4: 3,6-dianhydrohexitol (A ), at least one aliphatic diol unit (B) other than the units 1, 4: 3,6-dianhydrohexitol (A), at least one aromatic dicarboxylic acid (C), in which the molar ratio (A) / [(A ) + (B) j is at least 0.05 and at most 0.30, the reduced viscosity of which in solution (35 ° C; orthochlorophenol; 5 g / L of polyester) is greater than 50 mL / g .
• the dyed synthetic fiber according to the invention can be obtained according to the method described above.
• thermoplastic polyester and the dispersing dye are as described above.
• Another object of the invention a dyed synthetic fiber as defined above for use in the field of textiles, furniture, or sporting goods.
• the fibers can be used for the manufacture of textiles and nonwovens.
• the textiles can in particular be obtained by weaving or knitting.
• a nonwoven is a manufactured product consisting of a veil, a canvas, a sheet, a mat of fibers distributed directionally or by chance and whose internal cohesion is ensured by mechanical methods, physical or chemical or by a combination of these methods.
• An example of internal cohesion can be gluing and results in a nonwoven fabric being obtained, said nonwoven fabric then being able to be formed into a mat of fibers.
• the fibers can be transformed into a nonwoven according to techniques known to those skilled in the art, such as the dry process, the molten process, the wet process or flash spinning.
• the formation of the nonwoven by the dry process can in particular be carried out by calendering or by an aerodynamic process (in English “Airlaid”).
• aerodynamic process in English "Airlaid”
• the production in the molten process it can be carried out by extrusion (in English “spinbonding technology” or “spunbonded fabric") or by blow-molding (in English “melt-blown”).
• FIG. 1 Synthetic fibers colored with the light tint bath. From left to right: Synthetic fiber F (PET); Synthetic fiber D (PEI10T); Synthetic fiber A (PTI5T); Synthetic fiber B (PTI10T); Synthetic fiber C (PTT).
• FIG. 2 Synthetic fibers colored with the medium tint bath. From left to right: Synthetic fiber F (PET); Synthetic fiber D (PEI10T); Synthetic fiber A (PTI5T); Synthetic fiber B (PTI10T); Synthetic fiber C (PTT).
• Synthetic fiber F PET
• Synthetic fiber D PEI10T
• Synthetic fiber A PEI5T
• Synthetic fiber B PEI10T
• Synthetic fiber C PTT
• FIG. 3 Synthetic fibers colored with the dark tint bath. From left to right: Synthetic fiber F (PET); Synthetic fiber D (PEI10T); Synthetic fiber A (PTI5T); Synthetic fiber B (PTI10T); Synthetic fiber C (PTT).
• FIG. 4 Comparison of colorations obtained with dye baths 1 to 3 on fabrics knitted with synthetic fibers E and F. From left to right: fabrics knitted with synthetic fiber F and dyed with bath 1; fabrics knitted with synthetic fiber E and dyed with bath 1; fabrics knitted with synthetic fiber F and dyed with bath 2; fabrics knitted with synthetic fiber E and dyed with bath 2; fabrics knitted with synthetic fiber F and dyed with bath 3; fabrics knitted with synthetic fiber E and dyed with bath 3.
• Polymer A (PTIT): polv (trimethylene-co-isosorbide terephthalate). Polymer A is a semi-crystalline thermoplastic polyester according to the invention.
• the synthesis of this polymer is carried out in the melt process in 2 stages, via a transesterification and a polycondensation stage. This synthesis takes place in a 60L reactor equipped with stirring with torque measurement, a distillation column, a vacuum line and a nitrogen inlet.
• the reactor is preheated to 100 ° C before then being charged with the previously prepared reaction mixture.
• the reaction mixture consists of:
• Irganox 1010 used as an anti-oxidant.
• the reactor is then inerted by 4 vacuum / nitrogen cycles.
• the reaction medium is then heated at 220 ° C for 1 hour 30 minutes and then at 245 ° C until the end of the trans-esterification reaction.
• This first step is carried out under 1.5 bars of nitrogen.
• the polymer is poured into a water bath and then granulated.
• the polymer thus obtained exhibits a reduced viscosity in solution (IV) of 73.7 ml / g.
• the polymer granules are then subjected to a post-condensation treatment in the solid state in a 50L glass flask heated by an oil bath, stirred and under a flow of nitrogen.
• the oil bath is heated to 150 ° C.
• the granules are then cooled under nitrogen to 40 ° C to detach, if necessary, the granules attached to the walls of the flask. Then, the oil bath is warmed to 210 ° C with stirring and nitrogen flow (10L / min) for the post condensation step. These conditions are maintained for 15h.
• the final polymer denoted polymer A, exhibits a reduced viscosity in final IV solution of 102 mL / g, a molar rate of isosorbide relative to the diols of 5.2 mol%, a glass transition temperature Tg of 58. ° C, and a melting temperature Tm of 222 ° C.
• Polymer B is a semi-crystalline thermoplastic polyester according to the invention, while polymer C serves as a comparison and does not contain isosorbide. These two polymers are obtained following a process similar to polymer A and have the final properties shown in Table 1 below.
• Polymer D (PEU): polv (ethylene-co-isosorbide terephthalate) (PEU).
• PEU polymer D
• the synthesis of polymer D is carried out in the melt process in 2 stages, via esterification and a polycondensation stage. This synthesis takes place in a 100L reactor equipped with stirring with torque measurement, a distillation column, a vacuum line and a nitrogen inlet.
• the reactor is first preheated to 100 ° C before being then charged with the following reagents:
• germanium oxide used as a catalyst
• the reactor is then inerted by 4 vacuum / nitrogen cycles.
• the reaction medium is heated to 250 ° C under 2.5 bars. Esterification is continued until a conversion rate of approximately 80% is obtained.
• the pressure is then reduced over 15 minutes at atmospheric pressure (1024 hPa) for the addition of phosphoric acid via an addition pot (3.53 g of phosphoric acid dissolved in 50 g ethylene glycol).
• a vacuum ramp is then applied to reach 3 mbar in 25 minutes.
• the temperature of the reactor is increased to 265 ° C.
• the monitoring of the polycondensation is carried out by a torque measurement.
• the polymer is poured into a tank of water and then granulated.
• the polymer obtained exhibits a reduced viscosity in solution (IV) of 54 ml / g.
• the polymer granules are then subjected to a post-condensation treatment in the solid state in a 50L glass flask heated by an oil bath, stirred and under a flow of nitrogen.
• the oil bath is heated to 150 ° C.
• the granules are then cooled under nitrogen to 40 ° C to loosen, if necessary, the granules clinging to the walls of the balloon.
• the oil bath is warmed to 220 ° C, with stirring and nitrogen flow (10L / min) for the post-condensation step. These conditions are maintained for 90 hours.
• the final polymer denoted polymer D, exhibits a reduced viscosity in final solution (IV) of 106 ml / g, an isosorbide level with respect to the diols of 11.9 mol%, a Tg of 91 ° C and a Tm of 225. ° C.
• polymer E The synthesis of polymer E was carried out according to Example 3a of application WO2016 / 189239 A1.
• the polymer has the following properties: a molar rate of isosorbide relative to the diols of 15.2 mole%, a reduced viscosity in solution (IV) of 85 mL / g, a Tg of 109 ° C and a Tm of 263 ° vs.
• Polymer F is used as a comparison and does not contain isosorbide. It is a commercial poly (ethylene terephthalate) from the company Invista.
• Synthetic fibers A, B, D and E according to the invention were prepared by melt spinning on a pilot line from polymers A (PTIT), B (PTIT), D (PEIT), and respectively. E (PITg).
• Comparative synthetic fibers C and F were also prepared from polymers C (PTT) and F (PET) respectively without isosorbide.
• the extrusion temperature is 260 ° C for the polymers A (PUT), B (PUT) and C (PTT), and 300 ° C for the polymers D (PEIT), E (PITg) and F (PET).
• the die used comprises a head with 48 holes of 25 ⁇ m in diameter each, the material flow rate is 2 kg / h, the drawing speed is 1200 m / min.
• the fiber bundle then passes over four pairs of cups heated to different temperatures (between 30 ° C and 115 ° C) in order to adjust the mechanical properties and the assembly is then wound up.
• the synthetic fibers obtained with each of the polyesters A to F are then soaked in dye baths.
• the disperse dyes used are marketed by the Huntsman Company and listed below:
• Terasil 3RL-02 anthraquinone type
• Terasil WBLS azo type
• the mixture has a pH of 5 controlled by adding acetic acid to obtain the dye bath for each disperse dye.
• the synthetic polyester fibers were dyed with light, medium and dark shades. For each of the dye baths, all of the different fibers were put in the same bottle for dyeing.
• the feeding bottles are placed on an Ahiba Nuance top speed feeding bottle rotator marketed by the company Datacolor.
• the dyeing is carried out according to the time / temperature cycle having the successive steps below:
• the resistance to washing is evaluated through a color fastness test carried out according to the ISO 105-C06: 2010 standard.
• the test comprises a step of washing the textiles at 40 ° C for 30 min in 150 ml of detergent then a step of rinsing in two water baths at 40 ° C.
• Each textile is washed with a white strip of fabric composed of 6 different materials, namely wool, acrylic, polyester, polyamide, cotton and acetate.
• This white strip of fabric serves as a check and thus makes it possible to check, if applicable, whether the dye has disgorged from the textile and to know on which type (s) of material it is disgorging.
• the synthetic fibers A, B, D, E obtained with the semi-crystalline thermoplastic polyesters according to the invention absorb very much. quickly a very large part of the dye.
• the coloring obtained is perfectly uniform and has a qualitative visual aspect.
• delta L corresponds to the difference in brightness (light or dark).
• Delta a corresponds to the difference in green-red shade and finally, delta b corresponds to the difference in blue-yellow shade.
• the knits obtained with the synthetic fibers E have a better dye affinity than those obtained with the synthetic fibers F without isosorbide.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Dispersion Chemistry (AREA)
• Artificial Filaments (AREA)
• Polyesters Or Polycarbonates (AREA)
• Coloring (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=70228136

Family Applications (1)

Country Status (6)

Family Cites Families (7)

• 2019
  • 2019-12-10 FR FR1914005A patent/FR3104179B1/fr active Active
• 2020
  • 2020-12-10 EP EP20845170.8A patent/EP4073300A1/fr active Pending
  • 2020-12-10 WO PCT/FR2020/052381 patent/WO2021116614A1/fr unknown
  • 2020-12-10 US US17/757,049 patent/US20230050671A1/en active Pending
  • 2020-12-10 JP JP2022529107A patent/JP2023505424A/ja active Pending
  • 2020-12-10 KR KR1020227021653A patent/KR20220107244A/ko unknown

Also Published As

Similar Documents

Legal Events