EP4623137A1 - Filé de polyéthylène furanoate et son procédé de fabrication - Google Patents
Filé de polyéthylène furanoate et son procédé de fabricationInfo
- Publication number
- EP4623137A1 EP4623137A1 EP23809221.7A EP23809221A EP4623137A1 EP 4623137 A1 EP4623137 A1 EP 4623137A1 EP 23809221 A EP23809221 A EP 23809221A EP 4623137 A1 EP4623137 A1 EP 4623137A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- yarn
- temperature
- buckets
- pef
- filaments
- 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.)
- Pending
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
- D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins
-
- 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
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/447—Yarns or threads for specific use in general industrial applications, e.g. as filters or reinforcement
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
- D10B2401/062—Load-responsive characteristics stiff, shape retention
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/02—Reinforcing materials; Prepregs
- D10B2505/022—Reinforcing materials; Prepregs for tyres
Definitions
- the present invention relates to the field of textile yarns and their preparation process.
- Polyesters have numerous applications in the industrial and textile fields. Their versatility is such that the volumes produced each year are very large. Also, it is of interest to synthesize polyesters from monomers derived from renewable resources, and having technical characteristics allowing them to be substituted for petrosourced polyesters, such as, for example, polyethylene terephthalate (PET).
- PET polyethylene terephthalate
- polyesters from furanedicarboxylate monomers.
- the latter can in fact be obtained from renewable resources such as sugars, which makes it possible to envisage a reduction in the environmental impact of the production of these polyesters.
- the synthesis of polyester typically comprises an esterification step and a polycondensation step, possibly followed by crystallization and post-condensation steps in the solid state in order to adjust the properties of the polyester, then a shaping step. , in particular spinning when trying to obtain a thread.
- the structure, and therefore the characteristics, of the polyester obtained depend on the conduct of these different stages.
- the wires be able to withstand strong thermo-mechanical stresses and therefore have both mechanical resistance in traction and high elongation at break, high tensile stiffness and high thermal resistance.
- the document EP 3 348 679 describes for example that the association of a drawing rate greater than 6 associated with a ratio of the winding speed of the yarn to the speed at the exit of the extrusion die of the filaments ("spin draft » according to Anglo-Saxon terminology) ranging from 700 to 2000 makes it possible to obtain a PEF yarn having a high conservation modulus (the conservation modulus being defined in a manner known as the real part of the dynamic module, or complex module, which represents the response of the material to dynamic stress) and a relatively high toughness, greater than 3.0 cN/dTex.
- Document WO2014/204313 teaches the manufacture of PEF yarns having relatively high tenacities, at the cost of elongation at break.
- These yarns are obtained by spinning the PEF during a first step carried out at 90°C at a drawing rate of 2.5 followed by a second step carried out at a temperature of 100°C or 150°C at a drawing rate stretching of 1.8 (i.e. a total stretching rate of 4.5).
- the yarn according to the invention preferably has a secant modulus of 3 cN/dTex at least equal to 13 GPa, preferably at least equal to 15 GPa.
- a secant module allows the yarn according to the invention to have very good tensile rigidity, useful for its use in as a reinforcing element for rubber articles such as pneumatic or non-pneumatic tires, or conveyor belts.
- the PEF synthesis process used in the yarn according to the invention comprises a step of esterification of a composition comprising a dimethyl-2,5-furanedicarboxylate compound, denoted DMF, said composition also comprising ethylene glycol, denoted EG, this esterification step being carried out at a temperature increasing in the range from 150°C to at least 185°C with an EG/DMF molar ratio ranging from 3 to 1.3 in the presence of an acid catalyst by Lewis.
- DMF dimethyl-2,5-furanedicarboxylate compound
- EG ethylene glycol
- the esterification step produces ethylene-furanedicarboxylate oligomers from the reaction of ethylene glycol with the furanedicarboxylate compound.
- the operating conditions of this step have a determining influence on the structure of the polyester obtained.
- the EG/DMF molar ratio is preferably between 2 and 1.5. Below 1.3, the rate of progress of the reaction is significantly impacted, while above 3, the content of diethylene glycol unit (DEG) in the polyester becomes too high.
- the esterification step is carried out for a duration preferably ranging from 1 to 5 hours, preferably ranging from 2 to 4 hours.
- the esterification step is carried out at a temperature increasing in the range from 150°C to at least 185°C.
- increasing in the range from 150°C to at least 185°C it is meant that the esterification step is carried out at a temperature included in the temperature range from 150°C to at least 185°C. °C, the temperature of operation being increasing during the esterification stage.
- the implementation of an increasing temperature profile makes it possible to obtain a polyester which has, in particular, a very high melting temperature, in particular, in association with the other operating parameters, by obtaining a DEG pattern content and by a very small quantity of ester functions located at the end of the chain.
- the temperature increases continuously in the range from 150°C to at least 185°C according to a ramp less than or equal to +1°C/min, preferably less than or equal to +0.5°C/ min.
- a level can be maintained until the esterification rate is greater than 80%.
- the temperature increases in the range from 150°C to at least 185°C in steps comprised in a range from 5 to 15°C.
- each level lasts independently from 15 min to 2h30.
- the esterification step is carried out with at least three temperature levels.
- the highest temperature at which the esterification step is carried out is preferably in the range from 185°C to 205°C, preferably from 185°C to 200°C, and very preferably from 190°C. °C to 200°C. Below 185°C, the rate of progress of the reaction is significantly impacted, resulting in insufficient conversion of the ester chain ends and an insufficient final intrinsic viscosity, while above 205°C, the content of DEG pattern in polyester increases significantly.
- the duration between the end of the first stage and the start of the last stage, or between the lowest and highest temperature of the esterification step when the temperature increases continuously is at least equal to 30 min, preferably at least equal to 45 min. Indeed, it was observed that when the temperature rise was too rapid, higher DEG pattern contents were obtained.
- the esterification step can be carried out for 1 hour at 160°C, then 1 hour at 170°C and finally 2 hours at 195°C.
- the levels are respectively 10°C and 25°C and the respective duration of each of the three levels is 1h, 1h and 2h.
- the esterification step is preferably carried out at moderate pressure, ranging from 0.8 to 2 bar.
- the step is carried out under an inert atmosphere. Operation at moderate pressure, or even slight overpressure or underpressure, that is to say preferably between 800 and 1700 mbar, allows the esterification step to be carried out in the liquid phase while evacuating the reaction products. such as water.
- the esterification step is carried out in the presence of a Lewis acid catalyst.
- the Lewis acid catalyst is chosen from hafnium acetylacetonate, zirconium acetylacetonate, titanium isopropoxide (TIS) and titanium tetrabutoxide (TBT).
- TIS titanium isopropoxide
- TBT titanium tetrabutoxide
- the Lewis acid catalyst is titanium tetrabutoxide (TBT), the latter making it possible to obtain a low level of DEG units as well as a low level of decarboxylation at the end of the chain.
- the esterification step is carried out with a catalyst content ranging from 100 to 1000 ppm, preferably ranging from 150 to 500 ppm, and very preferably ranging from 200 to 450 ppm.
- the content of DEG units in the polyester formed is less than 4% mol, or even less than 3% mol, preferably less than 2% mol.
- the addition of anti-formation agents of DEG patterns as described in application WO2015/137805, for example ammonium compounds , in particular compounds of the tetraalkylammonium type did not provide any additional effect.
- the method according to the invention preferably does not comprise adding anti-DEG pattern formation agents.
- the PEF synthesis process used in the yarn according to the invention comprises a polycondensation step in a molten medium carried out at a temperature in the range from 220°C to 250°C and a pressure less than 100 mbar.
- the pressure is gradually lowered for a period of between 60 and 120 min, preferably between 80 and 100 min to reach the operating pressure of the polycondensation step.
- the pressure is less than 400 mbar, preferably less than 300 mbar and very preferably less than 200 mbar
- the temperature of the reaction medium is increased until reaching the initial operating temperature of the polycondensation step.
- the temperature rise to the initial operating temperature of the polycondensation step is carried out over a period of 15 to 45 min.
- the polycondensation step is carried out at a temperature increasing in the range from 220°C to 250°C.
- the temperature increases in the range from 225°C to 240°C in steps included in a range from 2 to 10°C.
- each level lasts independently from 15 minutes to 2.5 hours.
- the polycondensation step can be carried out for 1 hour at 230°C, then 1 hour at 240°C.
- each stage namely the temperature difference between two successive operating temperatures, is 10°C and the respective duration of each of the two stages is 1h and 2h.
- the implementation of increasing temperatures for the esterification and polycondensation steps is particularly advantageous in terms of controlling the structure of the polyester obtained. They make it possible in particular to obtain a polyester which comprises a quantity of decarboxylated chain ends below the detectability threshold.
- the polycondensation step is carried out for a duration preferably ranging from 1 to 5 hours, preferably ranging from 2 to 4 hours. This step is carried out under low pressure, preferably at a pressure less than 100 mbar, very preferably at a pressure less than 50 mbar.
- the invention also relates to a method for manufacturing a yarn made of PEF filaments comprising at least the following steps ⁇ a.
- a spinning stage in which PEF granules are fed to an extruder in which they are melted and extruded into filaments through a spinneret, then grouped together in the form of an unstretched yarn b.
- filaments are then grouped so as to form a pre-stretched multifilament yarn and pass through a step of spraying or impregnation with a sizing solution, the function of which is to limit friction or friction between filaments and on the spinning machine in order to to reduce the formation of static electricity and also to facilitate the subsequent stages of transformation of the multifilament.
- Each pair of buckets can have a different temperature and have a different speed than the previous pair, chosen according to the level of stretching desired at each stage. It is the difference in rotation speed between two successive pairs which induces the so-called “cold” stretching, as opposed to the so-called “melt” stretching of the filaments during their gravity fall between the exit of the die and the first pair of buckets.
- the speed between two successive pairs of buckets can be slightly lower in order to relax the yarn and thus limit its standard contraction, the rotation speeds increasing overall in the direction of travel of the yarn.
- each pair of buckets is regulated at a temperature ranging from 30°C to 180°C, preferably ranging from 40°C to 150°C.
- each pair of buckets except the first is regulated at a temperature above 100°C, preferably between 100°C and 150°C.
- Such temperature regulation makes it possible to obtain a yarn with very good elongation at break without degrading the tenacity. Below these values, yarns with very good tenacity can be obtained, with lower elongation at break.
- the yarn stretching step is carried out in a succession of 2 to 10 pairs of buckets, preferably 3 to 6 pairs of buckets, very preferably 4 to 6 pairs of buckets.
- the yarn is trancaned onto a take-up spool.
- These filaments are grouped into a yarn which is wound several turns around a first pair of cups at room temperature (El).
- the speed of the filament at the exit die being lower than the speed of the yarn on the first pair of buckets, the yarn has therefore undergone a first stretching.
- the yarn passes from one pair of buckets to the next (El, E2, E3, E4) according to the same trajectory of winding several turns around each pair, until a last pair (E5) which feeds a bobbin storage (F).
- the diagram shown here includes, without limitation, a total of five pairs of buckets. This is a so-called “one-step” drawing scheme because the yarn is stretched from the die outlet to the storage spool without intermediate storage on a spool. Intermediate storage could be considered after the first pair of buckets, or between subsequent pairs of buckets.
- the secant modulus is determined from a toughness/elongation curve obtained during a tensile test carried out in accordance with standard ASTM D885 _ 3 by determining the slope of the line passing through the origin and the corresponding point of the curve at a toughness of 3 cN/dTex.
- a transesterification step is fed with a composition comprising dimethylfuranedicarboxylate (DMF) and ethylene glycol (EG) with an EG/DMF molar ratio equal to 1.7.
- This composition is brought into contact with 400 ppm of titanium tetrabutoxide (TBT) catalyst.
- TBT titanium tetrabutoxide
- the transesterification step is carried out at 1.5 bar with a temperature varying from 160°C to 194°C with a temperature ramp of +0.2°C/min for 3 h, the highest temperature being maintained for a times reached.
- the pressure of the reaction medium is lowered to 200 mbar in 20 min, initially maintaining the temperature at 194°C.
- the pressure is increased to reach 230°C in 30 min while continuing to lower the pressure.
- the polycondensate is cooled quickly by coming into contact with water and cut into granules.
- the granules obtained are then dried for 5 hours at 100°C then are treated in a crystallization step in which they are brought to a temperature of 190°C for 1h30.
- a post-condensation step is carried out in the solid state by bringing the granules to a temperature of 217°C for 6 hours, then to a temperature of 227°C for 34 hours, under nitrogen flow.
- the polyester obtained at the end of this step has the following characteristics ⁇
- the melting temperature measured by applying a temperature ramp of 20 K/min as recommended in standard ISO 11357-3 of March 2018 is 242.5°C.
- the pellets are spun according to the process described below.
- the pellets are fed into a screw extruder in which they are gradually heated up.
- a positive displacement pump feeds the molten polymer into a die comprising 4 circular orifices, the temperature at the die being equal to Teiage.
- the 4 filaments are grouped into a yarn which is stretched over a series of 5 pairs of buckets then trancaned onto a receiving spool at a speed equal to the winding speed.
- the characterizations carried out on the yarn obtained are presented in Table 2. These characterizations are carried out from a sample of yarn taken from the receiving spool.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Artificial Filaments (AREA)
- Polyesters Or Polycarbonates (AREA)
- Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2212287A FR3142495B1 (fr) | 2022-11-24 | 2022-11-24 | Filé de polyéthylène furanoate et son procédé de fabrication |
| PCT/EP2023/082410 WO2024110394A1 (fr) | 2022-11-24 | 2023-11-20 | Filé de polyéthylène furanoate et son procédé de fabrication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4623137A1 true EP4623137A1 (fr) | 2025-10-01 |
Family
ID=85461790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23809221.7A Pending EP4623137A1 (fr) | 2022-11-24 | 2023-11-20 | Filé de polyéthylène furanoate et son procédé de fabrication |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP4623137A1 (fr) |
| JP (1) | JP2025536781A (fr) |
| KR (1) | KR20250100671A (fr) |
| CN (1) | CN120225738A (fr) |
| FR (1) | FR3142495B1 (fr) |
| WO (1) | WO2024110394A1 (fr) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2693373T3 (es) | 2013-06-20 | 2018-12-11 | Synvina C.V. | Procedimiento destinado a la preparación de una fibra, a una fibra y a un hilo realizado con dicha fibra |
| TR201810153T4 (tr) | 2014-03-11 | 2018-08-27 | Synvina C V | Polyester ve onun hazırlanış yöntemi. |
| JP2017053060A (ja) | 2015-09-08 | 2017-03-16 | 株式会社ブリヂストン | Pef原糸の製造方法、pef原糸及びタイヤ |
| KR102422987B1 (ko) * | 2019-11-21 | 2022-07-19 | 더 굿이어 타이어 앤드 러버 캄파니 | 타이어 텍스타일 코드 |
-
2022
- 2022-11-24 FR FR2212287A patent/FR3142495B1/fr active Active
-
2023
- 2023-11-20 WO PCT/EP2023/082410 patent/WO2024110394A1/fr not_active Ceased
- 2023-11-20 JP JP2025529941A patent/JP2025536781A/ja active Pending
- 2023-11-20 CN CN202380080109.8A patent/CN120225738A/zh active Pending
- 2023-11-20 KR KR1020257016661A patent/KR20250100671A/ko active Pending
- 2023-11-20 EP EP23809221.7A patent/EP4623137A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR3142495B1 (fr) | 2024-12-20 |
| KR20250100671A (ko) | 2025-07-03 |
| JP2025536781A (ja) | 2025-11-07 |
| CN120225738A (zh) | 2025-06-27 |
| FR3142495A1 (fr) | 2024-05-31 |
| WO2024110394A1 (fr) | 2024-05-30 |
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