EP3864200A1 - Filaments polyamide étirés par fusion - Google Patents

Filaments polyamide étirés par fusion

Info

Publication number
EP3864200A1
EP3864200A1 EP19783050.8A EP19783050A EP3864200A1 EP 3864200 A1 EP3864200 A1 EP 3864200A1 EP 19783050 A EP19783050 A EP 19783050A EP 3864200 A1 EP3864200 A1 EP 3864200A1
Authority
EP
European Patent Office
Prior art keywords
filaments
drawn
temperature
stretching
glass transition
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
Application number
EP19783050.8A
Other languages
German (de)
English (en)
Inventor
Lan DE GANS LI
Martin Wielpütz
Markus Hartmann
Dirk Heinrich BÜCKER
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.)
Evonik Operations GmbH
Original Assignee
Evonik Operations GmbH
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 Evonik Operations GmbH filed Critical Evonik Operations GmbH
Publication of EP3864200A1 publication Critical patent/EP3864200A1/fr
Pending legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D02J1/224—Selection or control of the temperature during stretching
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
    • C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
    • C08G69/10—Alpha-amino-carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
    • C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
    • C08G69/14—Lactams
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
    • C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
    • 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
    • D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
    • D01D10/02—Heat treatment
    • 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

Definitions

  • the present invention is directed to drawn filaments based on linear, branched or cyclic aliphatic or partially aromatic polyamides, the filaments having been drawn at a temperature between the glass transition temperature and the melting point and the filaments being cooled to room temperature under full tensile load.
  • Fiber-reinforced materials are mostly based on the use of glass or carbon fibers in polymers. There is therefore basically the problem of the compatibility of the fibers with the matrix material and thus the problems of bonding between the reinforcing material and the matrix. This is often a particular problem when using thermoplastics as a matrix. Furthermore, these materials are not recyclable because the separation of the fibers is very expensive.
  • polyolefins such as polyethylene or polypropylene
  • melt spinning process WO 2004/028803 A1
  • gel spinning process WO 2010/057982 A1
  • Polyolefins can easily be stretched at room temperature, the stretching speed having to be chosen relatively low due to the exothermic nature of the stretching.
  • the stretched polyolefins have the disadvantage that they shrink very much after stretching when processed at elevated temperatures and therefore first have to be equilibrated at the desired working temperature.
  • stretched polyolefins have very limited mechanical values which limit their use as reinforcing fibers.
  • the lack of thermal stability and the lack of pressure resistance (cold formability) are disadvantageous.
  • WO 2013/190149 A1 discloses ductile fibers of various thermoplastics, preferably polypropylene and polyethylene, as a component of so-called PrePregs. This includes interweaving of thermoplastic fibers with brittle fibers, in particular carbon fibers.
  • ductile fibers melts and improves the bond between the matrix and the brittle fiber.
  • partially aromatic polyamides are stretched with a stretching factor of less than 5; the stretching temperatures are preferably just as high as possible Glass transition temperature. Any shrinkage can be counteracted by heating the stretched filaments as high as possible under tensile load, this temperature being above the stretching temperature. So the filaments have to be heated twice.
  • No. 3,393,252 discloses mixtures of two non-isomorphic polyamides whose glass transition points must be below 120 ° C. and above 140 ° C., which are used to stabilize tires.
  • fibers are made by a process in which the tow rope is first drawn between multiple feed and draw rolls, followed by heating and cooling the draw filaments to anneal them under controlled tension.
  • filament means fibers, films or tapes.
  • Preferred filaments are films or tapes. Films in particular are preferably stretched in more than one direction.
  • the filaments preferably have an aspect ratio of greater than 2, more preferably greater than 10, more preferably greater than 50 and particularly preferably greater than 100.
  • the aspect ratio is defined as the ratio of width to thickness, the length being more than 5 times, preferably more than 10 times, more preferably more than 100 times and in particular more than 1000 times the width.
  • continuous filaments which e.g. have a length of 10 meters and more.
  • the object of the present invention was therefore to produce drawn filaments from aliphatic or partially aromatic thermoplastics, and to make them harmless, simple and
  • the task was solved by stretched filaments made of polyamide, the filaments being cooled under full tensile load after stretching.
  • the present invention relates to drawn filaments containing at least 80% by weight, preferably 85% by weight, more preferably 90% by weight, more preferably 95% by weight and in particular consisting of linear, branched or cyclic aliphatic or partially aromatic Polyamides,
  • Another object of the invention is the use of the drawn filaments according to the invention for the production of winding layers.
  • An advantage of the drawn filaments according to the invention is that they shrink little at elevated temperature, that is to say they have hardly any relaxation effect.
  • the drawn filaments according to the invention have high mechanical stability.
  • the mechanical stability is preferably measured in the form of a tensile strength at break in the direction of stretching.
  • maximum stress before breaking max strength
  • the drawn filaments according to the invention have high mechanical stability even at elevated temperature.
  • Embodiments should be limited. If areas, general formulas or classes of compounds are given below, these should not only refer to the corresponding areas or
  • connection that are explicitly listed, but also all sub-areas and sub-groups of connections that can be obtained by removing individual values (areas) or connections. If documents are cited in the context of the present description, their content should completely belong to the disclosure content of the present invention. If percentages are given below, they are percentages by weight unless otherwise stated. For compositions, the% data relate to the total composition, unless stated otherwise. If mean values are given below, they are mass averages (weight average) unless otherwise stated. If measurement values are given below, these measurement values were determined at a pressure of 101325 Pa and a temperature of 25 ° C, unless otherwise stated.
  • the polyamides can be produced from a combination of diamine and dicarboxylic acid, from a co-aminocarboxylic acid and / or the corresponding lactam.
  • the co-aminocarboxylic acid or the lactam or a mixture of various such monomers an arithmetic mean preferably at least 7.0 carbon atoms.
  • the arithmetic mean of the C atoms of diamine and dicarboxylic acid is preferably at least 7.0.
  • Copolyamides are also suitable; the building blocks mentioned diamine and dicarboxylic acid, w-aminocarboxylic acid and lactam can be combined as desired.
  • polyetheramides based on these polyamides and polyetheresteramides are also suitable according to the invention. Polyetheramides are made from dicarboxylic acid-regulated polyamide blocks and
  • polyether units generally contain 2 to 4 carbon atoms per ether oxygen.
  • Polyetheresteramides are known to the person skilled in the art and are commercially available in a large number of types.
  • the polyamides preferably contain a maximum of 40 and particularly preferably a maximum of 26 carbon atoms in the monomer units in the arithmetic mean.
  • the polyamides preferably contain no solvents.
  • dry means that the filaments are not brought into contact with a liquid, especially not with water.
  • the filaments therefore preferably have a maximum of 1.5% by weight of water, more preferably a maximum of 1% by weight, in particular a maximum of 0.9% by weight.
  • the water content is determined by customary methods of the prior art, preferably by Karl Fischer with a coulometer. For example, the KF Coulometer 831 from Metrohm is suitable; a suitable oven temperature is 170 ° C.
  • T m melting point
  • T g glass transition temperature
  • Xc crystallinity
  • T m , T g and AH m are determined within the scope of the present invention with the aid of the DSC, preferably determined according to EN ISO 11357-1: 2016D, more preferably as described in the examples.
  • the values refer to the polyamide of the unstretched filaments, in the 2nd heating in the DSC.
  • the stretching temperature is at least 5 ° C above the glass transition temperature.
  • the stretching temperature is at least 5 ° C below the melting temperature.
  • the filaments according to the invention are preferably drawn at a temperature above the minimum drawing temperature Trec, min, more preferably at a drawing temperature defined according to
  • Y is from 0.05 to 0.95, preferably 0.1 to 0.8, more preferably 0.2 to 0.7, particularly preferably 0.3 to 0.6.
  • the filaments according to the invention are preferably drawn by an elongation factor RF greater than or equal to 2.5, more preferably greater than or equal to 5, more preferably RF greater than or equal to 10, particularly preferably greater than or equal to 15 or greater.
  • the filaments according to the invention have preferably been drawn in free space without contact.
  • the zone in which the stretching takes place is a zone in which the atmosphere of the
  • Environment is heated, e.g. B. a kind of furnace, tube furnace or the space between two heated plates.
  • the filaments of the invention can be drawn continuously or in batches.
  • Static stretching ie stretching, in which one end of the filament remains at rest at speeds of 10 mm / min to 200 mm / min, preferably from 20 mm / min to 100 mm / min, more preferably 30 mm / min to, is preferred Stretched 80 mm / min.
  • Transport speed preferably in the range from 5 mm / min to 20,000 mm / min, preferably from 10 mm / min to 3,000 mm / min, more preferably from 50 mm / min to 2500 mm / min, more preferably 100 mm / min to 2000 mm / min, more preferably 500 mm / min to 1500 mm / min.
  • the speed of the faster running transport unit is calculated using the stretching factors.
  • the filaments according to the invention can be drawn by only one drawing operation or by several successive ones. In the latter case, the stretching temperature must be selected higher. Only one stretching process is more preferred.
  • the filaments according to the invention are cooled to below 100 ° C. after stretching. This cooling is preferably slow, preferably at least 1 second, more preferably at least 5 seconds, more preferably at least 10 seconds, particularly preferably at least 30 seconds, particularly preferably at least 1 minute.
  • the drawn filaments are preferably not exposed to water in any state of aggregation, steam is hereby expressly excluded, also the deviation from standard conditions, in particular the use of different pressures to generate different states of aggregation of water is excluded.
  • the stretched filaments according to the invention preferably have one when heated
  • the relaxation temperature is preferably above the glass transition temperature and below the melting temperature, preferably below the stretching temperature.
  • the filaments according to the invention preferably relax at most 6% with respect to the stretched length, preferably at most 5.5%, more preferably at most 5%, further more preferably at most 4.5% and particularly preferably at most 4%.
  • the filaments according to the invention more preferably relax at a relaxation temperature of 80 ° C. at most 6% in relation to the stretched length, preferably at most 5.5%, more preferably at most 5%, further more preferably at most 4.5% and particularly preferably at most 4% .
  • the filaments according to the invention are preferably not relaxed under tensile stress.
  • the drawn filaments according to the invention preferably have a length which is greater than 5 times a dimension at right angles to the length; the filaments are preferably so-called endless filaments.
  • the length of the filaments is always determined in the pulling direction.
  • filament means fibers, films or tapes. Films in particular are preferably stretched in more than one direction.
  • the individual filaments can be made into bundles like filament bundles; preferred bundles of fibers are fiber bundles and yarns.
  • the filament bundles, including fiber bundles or yarns can be processed into further composites, preferably into unidirectional or multi-directional fabrics, interweaving such as mats, and entanglements, or also mixed forms.
  • Layers can consist of filaments cut to a certain length, as well as of endless filaments in the form of windings around pipes, for example.
  • Preferred fabrics made of endless filaments are wrapping layers around hollow bodies. They are preferably unidirectional or multidirectional. Multi-directional winding layers have an angle with respect to the direction of pull of the filaments. This angle is preferably in the range from 5 to 120 °, more preferably from 30 to 90 °, particularly preferably 15 to 80 °. In the case of winding layers around pipes, these winding layers have a pitch angle with respect to the pipe center. Different winding layers preferably have different pitch angles. The winding layers around tubes are preferably designed with respect to the pitch angle in such a way that after one revolution the edges of the layer connect flush with one another.
  • Fig 1 graphical representation of the results according to Table 1;
  • Hatching vertical represents the shrinkage in the direction of stretching and cross-hatching represents the extent at right angles to the direction of stretching
  • Fig. 2 Plotting the max strength, o m [MPa] over temperature at which o m was determined, determinations for samples with different stretching factors RF]
  • PA 10.10 VESTAMID Terra DS 18 (Evonik)
  • PA 12 VESTAMID L2101 nf (Evonik)
  • the above-mentioned polyamides were made into a tape with a thickness of 150, 350 and Extruded 650 pm, cooled to 30-40 ° C.
  • the tapes were calendered at a speed of 1.4 m / min, the width was 35 mm.
  • P 1, * are samples from PA 12;
  • P 2 are samples made of trogamide
  • An endless test piece according to Example 1 was provided on a spool, on a continuously working machine (retech drawing) at one
  • Example 0 Continuous stretching process - samples P 1, * (PA12), thickness 650pm, width 10mm.
  • Test pieces of Example 2 were cut to a length of 10 cm.
  • the test pieces according to Example 2, Method 1 were cut at both ends.
  • the specimens were stored in a thermal cabinet without tensile load, individually horizontally and freely movable, at temperatures of 80 ° C and 120 ° C for 5 h.
  • Polyamide samples show little relaxation and surprisingly show increasing relaxation with increasing stretching factor.
  • the results represent the arithmetic mean of 3 test pieces.
  • Table 4 max strength, o m [MPa] for different test temperatures, results of tensile tests according to Example 4, for samples with different stretching factors

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Artificial Filaments (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Polyamides (AREA)

Abstract

L'invention concerne des filaments étirés sur la base de polyamides aliphatiques ou partiellement aromatiques linéaires, ramifiés ou cycliques, les filaments ayant été étirés à une température comprise entre la température de transition vitreuse et le point de fusion et les filaments étant ramenés par refroidissement à température ambiante sous plein effort de traction.
EP19783050.8A 2018-10-10 2019-10-09 Filaments polyamide étirés par fusion Pending EP3864200A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18199730.5A EP3636808A1 (fr) 2018-10-10 2018-10-10 Filaments de polyamide étiré
PCT/EP2019/077341 WO2020074572A1 (fr) 2018-10-10 2019-10-09 Filaments polyamide étirés par fusion

Publications (1)

Publication Number Publication Date
EP3864200A1 true EP3864200A1 (fr) 2021-08-18

Family

ID=63921499

Family Applications (2)

Application Number Title Priority Date Filing Date
EP18199730.5A Withdrawn EP3636808A1 (fr) 2018-10-10 2018-10-10 Filaments de polyamide étiré
EP19783050.8A Pending EP3864200A1 (fr) 2018-10-10 2019-10-09 Filaments polyamide étirés par fusion

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP18199730.5A Withdrawn EP3636808A1 (fr) 2018-10-10 2018-10-10 Filaments de polyamide étiré

Country Status (10)

Country Link
US (1) US20210381135A1 (fr)
EP (2) EP3636808A1 (fr)
JP (1) JP7446289B2 (fr)
KR (1) KR20210069705A (fr)
CN (1) CN112955588B (fr)
AR (1) AR116725A1 (fr)
BR (1) BR112021006566A2 (fr)
CA (1) CA3115386A1 (fr)
MX (1) MX2021004065A (fr)
WO (1) WO2020074572A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3640376A1 (fr) 2018-10-17 2020-04-22 Evonik Operations GmbH Polyéther aromatique étiré

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2298868A (en) 1940-04-03 1942-10-13 Du Pont Synthetic polyamide filaments of high impact strength and process of making same
BE464568A (fr) * 1944-09-15
GB885513A (en) * 1957-04-08 1961-12-28 Dunlop Rubber Co Hot stretching of fibres
US3393252A (en) 1967-04-19 1968-07-16 Du Pont Melt blend of polyamides
GB1150860A (en) * 1967-12-28 1969-05-07 Du Pont Polyamide Filaments and process for making them
US3869430A (en) 1971-08-17 1975-03-04 Du Pont High modulus, high tenacity poly(p-phenylene terephthalamide) fiber
US5011645A (en) * 1989-05-04 1991-04-30 E. I. Du Pont De Nemours And Company Process for preparing nylon staple fiber
US5106946A (en) * 1989-10-20 1992-04-21 E. I. Du Pont De Nemours And Company High tenacity, high modulus polyamide yarn and process for making same
US5104969A (en) * 1989-10-20 1992-04-14 E. I. Du Pont De Nemours And Company Low shrinkage, high tenacity poly(epsilon-caproamide) yarn and process for making same
CA2040133A1 (fr) * 1990-05-11 1991-11-12 F. Holmes Simons Procede de filature servant a la production de fils synthetiques resistants, a module eleve et a faible retrait
JPH05156513A (ja) * 1991-12-04 1993-06-22 Asahi Chem Ind Co Ltd 高強度ポリアミド繊維及びその製造方法
DE19705113C2 (de) * 1997-02-12 1999-04-29 Freudenberg Carl Fa Verstreckvorrichtung und Verfahren zur Herstellung verstreckter Kunststoffilamente
AR041322A1 (es) 2002-09-27 2005-05-11 Lankhorst Indutech Bv Metodo para reforzar un articulo
WO2010057982A1 (fr) 2008-11-20 2010-05-27 Dsm Ip Assets B.V. Fibre de polyéthylène filée à l'état de gel
CN102465353B (zh) * 2010-11-18 2014-04-16 上海杰事杰新材料(集团)股份有限公司 一种均聚半芳香族聚酰胺纤维及其制备方法
US11167503B2 (en) 2012-06-22 2021-11-09 Katholieke Universiteit Leuven Hybrid self-reinforced composite material
JP6561414B2 (ja) * 2014-01-17 2019-08-21 ディーエスエム アイピー アセッツ ビー．ブイ．Ｄｓｍ Ｉｐ Ａｓｓｅｔｓ Ｂ．Ｖ． ポリアミド繊維
HUE052026T2 (hu) * 2014-12-19 2021-04-28 Truetzschler Gmbh & Co Kg Eljárás és berendezés alacsony zsugorodású alifás poliamid szál elõállítására, valamint alacsony zsugorodású szál
KR20180131803A (ko) * 2017-06-01 2018-12-11 한국과학기술연구원 생분해성 스텐트 및 이의 제조방법

Also Published As

Publication number Publication date
BR112021006566A2 (pt) 2021-07-13
MX2021004065A (es) 2021-06-04
CA3115386A1 (fr) 2020-04-16
KR20210069705A (ko) 2021-06-11
AR116725A1 (es) 2021-06-09
US20210381135A1 (en) 2021-12-09
JP2022503967A (ja) 2022-01-12
CN112955588B (zh) 2024-01-05
CN112955588A (zh) 2021-06-11
EP3636808A1 (fr) 2020-04-15
WO2020074572A1 (fr) 2020-04-16
JP7446289B2 (ja) 2024-03-08

Similar Documents

Publication Publication Date Title
DE69416051T2 (de) Wasserlösliche Faser auf Polyvinylalkohol-Basis
DE60011310T2 (de) Ballistisches Material enthaltend hochfeste Polyethylenfasern
DE69027108T2 (de) Aramidemonofilament und verfahren zur herstellung
DE2847782C2 (de) Zusammengesetztes Polymermaterial
DE69031405T2 (de) Fasern aus einer Mischung von Para-Aramid und Polyvinylpyrrolidon und Verfahren zur Herstellung derselben
DE69120289T2 (de) Kompositen mit verbesserten oberflächeneigenschaften
DD297600A5 (de) Stoff aus thermoplastischen fasern und kontinuierlichen verstaerkungsfasern
EP2736691B1 (fr) Fil de fibre de renforcement flexible pre-impregne de resine
CH701648B1 (de) Heizvorrichtung und Verfahren für das Strecken von Ultrahochmolekulargewicht-Polyolefinfasern.
EP1705269B1 (fr) Matériau fibreux thermoplastique filé à partir d'une matière première contenant un polyhydroxyéther, son procédé de préparation et ses utilisations
EP2136986A1 (fr) Procédé de fabrication de bandes de polyoléfine fortement orientées, produits plats textiles et techniques fabriqués à l'aide de ce procédé et utilisation de ces produits dans des corps de protection destinés à assurer une protection entre autres contre des projectiles
DE4137406A1 (de) Hybridgarn aus polyamidfasern und verstaerkungsfasern
DE102016209102B4 (de) Thermoplastischer Kunststoff-Verbundstoff und Herstellungsverfahren für einen thermoplastischen Kunststoffverbundstoff
DE69524111T2 (de) Verfahren zur Herstellung von Poly-p-Phenylenterephtalamidpulpen
DE69023797T2 (de) Verfahren zur Herstellung von orientierten geformten Artikeln aus Mischungen von para-Aramid mit thermisch verfestigbaren Polymeren.
WO2020074572A1 (fr) Filaments polyamide étirés par fusion
DE69206975T2 (de) Verfahren zum spinnen von poly(p-phenylen terephthalamid)fasern mit hoher festigkeit und mit hoher bruchdehnung
DE2947942C2 (de) Faser für optische Übertragungen
DE69726017T2 (de) Bikomponentenfasern in mantelkernstruktur, welche fluor polymere enthalten und verfahren zu deren herstellung und benutzung
DE69718807T2 (de) WÄßRIGE KOAGULATIONSMITTEL FÜR FLÜSSIGKRISTALLLINE LÖSUNGEN AUF DER BASIS VON CELLULOSEMATERIAL
WO2020079121A1 (fr) Polyéthers aromatiques étirés
DE69610894T2 (de) Orientierte Polyamidfasern und Verfahren zu ihrer Herstellung
DE69129147T2 (de) Aramidmonofilament mit leicht strukturierter oberfläche, verfahren zur herstellung dieses monofilaments
EP3899114A1 (fr) Fluoropolymères étirés
DE2406491A1 (de) Verfahren zur herstellung von aus mehreren bestandteilen bestehenden polyamidhaltigen elementarfasern

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

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

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

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

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20210326

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20240903