EP2135982A2 - Monofilaments modifiés à l'aide de perfluoropolyéthers - Google Patents

Monofilaments modifiés à l'aide de perfluoropolyéthers Download PDF

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Publication number
EP2135982A2
EP2135982A2 EP20090007803 EP09007803A EP2135982A2 EP 2135982 A2 EP2135982 A2 EP 2135982A2 EP 20090007803 EP20090007803 EP 20090007803 EP 09007803 A EP09007803 A EP 09007803A EP 2135982 A2 EP2135982 A2 EP 2135982A2
Authority
EP
European Patent Office
Prior art keywords
monofilaments
melt
spun
mixture
polymer
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.)
Withdrawn
Application number
EP20090007803
Other languages
German (de)
English (en)
Other versions
EP2135982A3 (fr
Inventor
Hans-Joachim Brüning
Ralf Michael Haber
Holger Dr. Meid
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.)
Teijin Monofilament Germany GmbH
Original Assignee
Teijin Monofilament Germany 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 Teijin Monofilament Germany GmbH filed Critical Teijin Monofilament Germany GmbH
Publication of EP2135982A2 publication Critical patent/EP2135982A2/fr
Publication of EP2135982A3 publication Critical patent/EP2135982A3/fr
Withdrawn legal-status Critical Current

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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
    • D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
    • 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
    • D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/94—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of other polycondensation products
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]

Definitions

  • the invention relates to a process for the production of monofilaments of fiber-forming polymers which are modified with perfluoropolyethers, processes for their preparation and their use for the production of textile fabrics, in particular of woven fabrics and their use in paper machine clothing, conveyor belts, filtration screens and the like.
  • polyesters still leave much to be desired and it is particularly interesting to improve the hydrolysis resistance, but also the dirt-repellent properties and the Abriebeigenschaften. Also, such monofilaments should have the lowest possible coefficient of sliding friction.
  • polyester monofilaments are described for papermaking fabrics which have been modified by the addition of a specific copolymer.
  • the copolymer which is added in amounts of from 1.5 to 5 percent by weight, is a polynary copolymer obtained from alkenes and perfluoroalkenes, in particular from ethylene and tetrafluoroethylene.
  • perfluoroethem As the invention teaches, this document is neither disclosed nor suggested.
  • perfluorinated linear polyethers having reactive end groups at each end of the polymer chain. These end groups are COOH groups.
  • perfluoropolyethers as the invention teaches, is also not apparent from this American patent. There is also no evidence suggesting the use of such perfluoropolyethers.
  • a particular disadvantage is to be observed, namely that the mixing of these polymers is difficult and insufficient.
  • the fluoropolymers form more or less well-distributed islands and heterogeneously distributed particles, so that even in unfavorable cases thick spots in the monofilament.
  • monofilaments then occur when cleaning and eliminating residual contaminants, especially with high-pressure cleaners disadvantages such as fraying the monofilament surfaces, ie the so-called. Fibrillation, which more or less quickly become the tissues unusable.
  • fibrillating or even beginning fibrillating approaches will cause debris to adhere more tightly to the monofilament, require more cleaning time, which is costly and labor intensive, increase fibrillation and ultimately result in faster tissue replacement have to.
  • the object of the invention is therefore to provide monofilaments which do not have the disadvantages described above or are improved over the known monofilaments, which in particular have no or only a reduced tendency to fibrillation, which have a reduced roughness and thus are less prone to abrasion , have a reduced soiling tendency, which have a more homogeneous internal structure and therefore, especially when they are used in the form of tissues in paper machines used to be cleaned less frequently and also easier to clean.
  • Another object of the monofilaments of the invention is a lower sliding friction resistance. This is associated with a reduced energy consumption in the drive performance of the paper machine.
  • This object is achieved by a method for producing a monofilament from a mixture of a melt-spun, thread-forming polymer and a modifying additional polymer, which is characterized in that a mixture of one or more melt-spun yarn-forming polymers and 0.001 to 10 wt. % of a perfluorinated polyether is spun into monofilaments.
  • perfluoropolyesters are inert liquids, having molecular weights of about 500 to 6,000 and having no COOH or OH end groups which can react with the polymer to be modified, such as polyesters, polyamides or polycarbonates to form copolymers. They can be represented by the following chemical formula where n is a number corresponding to molecular weights in the range of 500 to 6,000.
  • Perfluoropolyethers are commercially available products, the perfluoropolyethers which are particularly suitable according to the invention are oleaginous inert liquids which are also pumpable.
  • Du Pont sold under the brand FLUOROGUARD ® perfluoropolyethers are very suitable. They can be obtained, for example, from Du Pont de Nemours (Belgium) BVBA, DuPont Chemical Solution Enterprise, Ketenislaan 1, Haven 1548, B-9130 Kallo, Belgium.
  • melt-spinnable yarn-forming polymers are preferably polyesters, polyamides or polycarbonates.
  • polyester polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, polyethylene naphthalate and polybutylene naphthalate are preferably used.
  • the polyamides used are preferably PA 6, PA 4.6, PA 6.6, PA 6.10, PA 6.12, PA 11 or PA 12.
  • the mixtures also contain stabilizers such as hydrolysis, thermal and / or UV stabilizers.
  • Dyes in particular pigment dyes, can also be used in the mixtures.
  • the diameter of the monofilaments may be 10 ⁇ m to 2.00 mm, preferably 0.1 mm to 1.00 mm.
  • the monofilaments having a round, a non-round cross-section, in particular an oval cross-section, but also to spin with an n-angular cross-section with n ⁇ 3.
  • FIG. 1 corresponds to.
  • Another object of the invention are monofilaments which are composed of a mixture of one or more melt-spun yarn-forming polymers containing 0.001 to 10 wt .-%, preferably 0.01 to 1 wt .-% of a perfluorinated polyether.
  • a monofilament under constant tension is pulled over a knife blade.
  • the number of double strokes is counted until the thread breaks.
  • the measure of fibrillation tendency can be the cam impact test: the number of splits after 1000 hammer blows is counted at different points of the monofilament; usually the fibrillation tendency is assessed visually after the high pressure shower test.
  • An article is therefore monofilaments which are composed of a mixture of one or more melt-spun yarn-forming polymers containing 0.001 to 10 wt .-%, preferably 0.01 to 1 wt .-% of a perfluorinated polyether.
  • the soiling tendency is reduced (possibly because of the hydrophobic surface), the sliding resistance and thus the abrasion are reduced. Due to the reduced sliding resistance also the drive power of the paper machine and thus their energy consumption is reduced.
  • Another object of the invention is the use of the outlined above monofilaments for the production of textile fabrics, in particular of textile and technical fabrics.
  • Another object of the invention is the use of textile or technical fabrics for the production of paper machine clothing, conveyor belts, filtration sieves and sieves for screen printing.
  • Melt spinnable yarn-forming polymers have been known for a long time and their preparation is well known to those of ordinary skill in the art.
  • polyesters such as polyethylene terephthalate are emphasized here.
  • Perfluorinated polyethers are also known polymers. In this context, reference is made to R ⁇ MPP Lexikon Chemie 10th, completely revised edition on page 3181; It is based on the disclosure given there and incorporated herein by reference.
  • the perfluoropolyethers are preferably added in the form of masterbatches. Suitable masterbatches are sold by RTP Company, 580 East Front Street, Winona, MN 55987, USA, e.g. B. under the type designation 1099X99974.
  • a melt is produced from the components to be spun, which is spun through a nozzle which gives the exiting monofilaments a corresponding cross-section.
  • the mixture to be spun is generally melted in an extruder and then by means of a melt pump through the nozzle pressed.
  • the shaped article is generally passed through a cooling medium with a delay of 1: 1.1 to 1: 5, preferably water at a temperature of 10 ° C to 90 ° C.
  • the yarn obtained is on or repeatedly stretched and heat-set until it has the desired dimensions, ie the desired titer.
  • the delivery rate, if necessary, the delay and the stretching are coordinated so that the obtained monofilament has a diameter of about 100 microns to 5 mm, in particular 0.1 to 2 mm.
  • nozzles nozzles with a simple round cross section or oval cross section can be used. But it is also possible threads with profiled cross section, z. Square or n-shaped, where n ⁇ 3.
  • thermal and UV light resistance conventional agents can be used.
  • monomeric and polymeric carbodiimides are suitable.
  • dyes especially pigment dyes are used.
  • the fabrics which are used in paper machine clothing are outstandingly suitable both in the wet end and in the following lots, especially in the dryer section.
  • the monofilaments are characterized by a special homogeneous structure.
  • the invention is explained in more detail by the following example:
  • the monofilament type 0.50 mm 910 CK white was used, which contains 15% of a classic fluoropolymer in PET.
  • the textile data is shown in the table.
  • On line number 20 20 polymer base polymer RT12 * RT12 * additive 4.0% RTP 1099X99974 ** 15.0% PVDF *** 0.7% stabilizer 0.7% stabilizer
  • the diameters and titers titres dtex 2818 2826 Diameter x microns 503 503 breaking strength CN / tex 34.3 33.4 N 96.8 94.4 elongation % 37.9 35.6 relative elongation at 15cN / tex % 10.5 10.5 at 20 cN / tex % 16.0 16.0 at 27 cN / tex % 22.5

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)
  • Paper (AREA)
  • Woven Fabrics (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Knitting Of Fabric (AREA)
EP20090007803 2008-06-18 2009-06-13 Monofilaments modifiés à l'aide de perfluoropolyéthers Withdrawn EP2135982A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810028617 DE102008028617A1 (de) 2008-06-18 2008-06-18 Mit Perfluorpolyethern modifizierte Monofilamente

Publications (2)

Publication Number Publication Date
EP2135982A2 true EP2135982A2 (fr) 2009-12-23
EP2135982A3 EP2135982A3 (fr) 2010-05-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090007803 Withdrawn EP2135982A3 (fr) 2008-06-18 2009-06-13 Monofilaments modifiés à l'aide de perfluoropolyéthers

Country Status (4)

Country Link
US (1) US20090318047A1 (fr)
EP (1) EP2135982A3 (fr)
JP (1) JP2010001596A (fr)
DE (1) DE102008028617A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012221053A1 (de) 2012-11-19 2014-06-05 Voith Patent Gmbh Papiermaschinenbespannung

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011160399A (ja) 2010-01-06 2011-08-18 Sony Ericsson Mobile Communications Ab スライド回転装置、スライド回転方法、及び携帯端末装置
FI20115099L (fi) 2011-01-31 2012-08-01 Metso Fabrics Oy Kenkäpuristinhihna, menetelmä sen valmistamiseksi ja käyttö kenkäpuristimessa
US20140329623A1 (en) * 2013-05-02 2014-11-06 Diadem Sports, LLC String for sports racquet and sports racquet with improved string
EP3795636A1 (fr) 2019-09-20 2021-03-24 SABIC Global Technologies B.V. Utilisation de polyéthers perfluorés pour la modification de copolymères de polycarbonate

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3847978A (en) 1968-07-01 1974-11-12 Montedison Spa Perfluorinated linear polyethers having reactive terminal groups at both ends of the chain and process for the preparation thereof
EP0506983A1 (fr) 1990-10-19 1992-10-07 Toray Industries, Inc. Monofil de polyester
EP0617743B1 (fr) 1992-09-01 1999-07-14 Rhodia Filtec AG Monofilament antisalissures pour tamis de machine a papier, son procede de fabrication et son application
DE69424510T2 (de) 1993-12-06 2001-01-18 Ausimont S.P.A., Mailand/Milano Fluormodifizierte Polyester mit verbesserter Verarbeitbarkeit

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5132455A (en) * 1982-03-31 1992-07-21 Exfluor Research Corporation Method for synthesizing perfluorinated ether compounds via polyesters
US5143963A (en) * 1989-12-06 1992-09-01 Res Development Corp. Thermoplastic polymers with dispersed fluorocarbon additives
WO1991008254A1 (fr) * 1989-12-06 1991-06-13 Res Development Corporation Polymeres thermoplastiques avec additifs de fluorocarbone disperses
US5459188A (en) * 1991-04-11 1995-10-17 Peach State Labs, Inc. Soil resistant fibers
JP3246026B2 (ja) * 1992-04-23 2002-01-15 ダイキン工業株式会社 撥水撥油性繊維
DE19511853A1 (de) * 1995-03-31 1996-10-02 Hoechst Trevira Gmbh & Co Kg Hochbelastbare Kern/Mantel-Monofilamente für technische Anwendungen
ITMI20062308A1 (it) * 2006-11-30 2008-06-01 Solvay Solexis Spa Additivi per alo-polimeri

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3847978A (en) 1968-07-01 1974-11-12 Montedison Spa Perfluorinated linear polyethers having reactive terminal groups at both ends of the chain and process for the preparation thereof
EP0506983A1 (fr) 1990-10-19 1992-10-07 Toray Industries, Inc. Monofil de polyester
EP0617743B1 (fr) 1992-09-01 1999-07-14 Rhodia Filtec AG Monofilament antisalissures pour tamis de machine a papier, son procede de fabrication et son application
DE69424510T2 (de) 1993-12-06 2001-01-18 Ausimont S.P.A., Mailand/Milano Fluormodifizierte Polyester mit verbesserter Verarbeitbarkeit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012221053A1 (de) 2012-11-19 2014-06-05 Voith Patent Gmbh Papiermaschinenbespannung

Also Published As

Publication number Publication date
US20090318047A1 (en) 2009-12-24
DE102008028617A1 (de) 2009-12-24
EP2135982A3 (fr) 2010-05-26
JP2010001596A (ja) 2010-01-07

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