EP1392897B1 - Verfahren zur herstellung von feinen monofilamenten aus polypropylen, feine monofilamente aus polypropylen sowie deren verwendung - Google Patents

Verfahren zur herstellung von feinen monofilamenten aus polypropylen, feine monofilamente aus polypropylen sowie deren verwendung Download PDF

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Publication number
EP1392897B1
EP1392897B1 EP02704535A EP02704535A EP1392897B1 EP 1392897 B1 EP1392897 B1 EP 1392897B1 EP 02704535 A EP02704535 A EP 02704535A EP 02704535 A EP02704535 A EP 02704535A EP 1392897 B1 EP1392897 B1 EP 1392897B1
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EP
European Patent Office
Prior art keywords
polypropylene
weight
monofilaments
dtex
process according
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.)
Expired - Lifetime
Application number
EP02704535A
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German (de)
English (en)
French (fr)
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EP1392897A1 (de
Inventor
Gustav Schütze
Max Kurt
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.)
ExNex AG
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Rhodia Industrial Yarns AG
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Publication of EP1392897A1 publication Critical patent/EP1392897A1/de
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Anticipated expiration legal-status Critical
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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
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • 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
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
    • D01F6/06—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins from polypropylene
    • 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
    • D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
    • 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
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • 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
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2927—Rod, strand, filament or fiber including structurally defined particulate matter
    • 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
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/2964—Artificial fiber or filament
    • Y10T428/2967—Synthetic resin or polymer

Definitions

  • the invention relates to a process for the production of fine monofilaments with improved abrasion resistance from polypropylene with a melt flow index (MFI) 230 ° C / 2.16kg of 2-16g / 10min, a monofilament of polypropylene with a melt flow index (MFI) 230 ° C / 2.16 kg of 2-16 g / 10 min with improved abrasion resistance and a titre of 5-20 dtex (0.027 mm-0.053 mm), as well as its use.
  • MFI melt flow index
  • MFI melt flow index
  • Textile fabrics made of polypropylene are gaining increasing interest in the automotive industry, mainly because of their compared to other thermoplastics relatively lighter weight and improved resistance to climatic influences and mechanical stress. In this case, particularly fine monofilaments are required, which allow a further weight reduction. Fine monofilaments are to be understood as meaning smaller than 30 dtex, in particular smaller than 25 dtex.
  • Monofilaments of pure polypropylene have the disadvantage of a strong dust formation as a result of its low abrasion resistance in the weaving process.
  • the problem of abrasion is also known in other thermoplastics.
  • EP-A2-0 784 107 calls melt-spun monofilaments of polyamide, polyester and polypropylene. Thereafter, abrasion resistant monofilaments are obtained with 70-99% by weight of filament-forming polymer and 1-30% by weight of a maleic anhydride-modified polyethylene / polypropylene rubber and other additives.
  • the examples are limited to polyamide 6 and polyethylene terephthalate and a copolyamide of PA66 and PA6 as a filament-forming polymer. Spinning speeds are not specified.
  • the relatively thick monofilaments are according to the examples, especially for paper machine screens and lawn mower wires suitable. No details are given for the preparation of relatively fine polypropylene monofilaments.
  • the starting material is a metallocene-catalyzed isotactic polypropylene having a melt flow index of less than 25 g per 10 minutes to achieve the desired shrinkage properties.
  • polypropylene granules having a high MFI value.
  • About the yarns produced are only general information. Monofilaments are not described.
  • EP-A-0028844 describes a textile multifilament polypropylene filament yarn.
  • Starting polymer is a polypropylene having a melt flow index between about 20 and 60. Under the specified spinning and stretching conditions as well as in the further processing, the problem of abrasion, which occurs in the processing of fine monofilaments, apparently not found.
  • the object of the invention is to provide an economical process for the production of fine, abrasion-resistant polypropylene monofilaments.
  • Another object of the invention is the production of fine monofilaments of polypropylene with improved resistance to abrasion during weaving.
  • Yet another object is to provide the use of a fine monofilament having good abrasion resistance for making engineering fabrics.
  • the object is achieved according to the invention in that a compound consisting of 80 to 99.9% by weight of granules and 20 to 0.1% by weight of an additive is added to the extruder, the melt being spun at a rate of at least 1200 m / min, in the Air bath cooled at room temperature, at a temperature of 110 to 150 ° C to a titre of 5-20 dtex (0.027 mm-0.053 mm) nachverstreckt and wound. It is essential here that the additive is well dispersed in the polypropylene and no difference can be detected in the resulting monofilament.
  • additives are modified polyolefins in an amount of 4.5 to 15 wt .-%, in particular 6 to 13 wt .-%, preferably 8 to 12 wt .-% polypropylene / polyethylene having a melting point> 140 ° C to use.
  • a melting point of less than 140 ° C has the disadvantage of costly dosing.
  • Use of less than 4.5% by weight and more than 15% by weight of polypropylene / polyethylene achieves unsatisfactory abrasion resistance of the monofilament. In this variant, surprisingly no further additives are required to achieve excellent abrasion resistance.
  • Suitable impact modifiers which show no softening up to 100 ° C. and are composed of linear styrene-ethylene / butylene-styrene block copolymers or linear styrene-ethylene / butylene-styrene block copolymer / styrene-ethylene / butylene-linear alloys. Biblock are constructed.
  • a plasticizer di-iso-nonyl adipate is most suitable.
  • a lubricant it is expedient to use as an additive 0.05-1.0% by weight, in particular 0.3 to 1.0% by weight, of a lubricant.
  • Metalloids of carboxylic acids, linear or branched hydrocarbons, fluoroelastomers, polydimethylsiloxanes are particularly suitable as lubricants.
  • fillers as additive.
  • fillers 0.01-0.1% by weight aerosils and 0.1-1.0% by weight calcium carbonate have proven to be particularly suitable.
  • the additive consists of a compound of a combination of 2-10% by weight of an impact modifier, 0.1-0.2% by weight Plasticizers, fillers 0.01-0.1 wt .-% Aerosil or 0.1-1.0 wt .-% calcium carbonate, 0.05-1.0 wt .-% of lubricants and 0.1-0.5 wt .-% of heat stabilizers.
  • Suitable heat stabilizers are sterically hindered phenols, phosphites and phosphonites.
  • the main polymer is a polypropylene having a melt flow index (MFI) of 230 ° C / 2.16kg of 2-16g / 10 min. and a titre of 5-20 dtex (0.027 mm-0.053 mm).
  • MFI melt flow index
  • a melt flow index of less than 2 g / 10 min has the disadvantage that too high melt spinning temperatures are required, which leads to the destruction of the polymer.
  • a melt flow index of more than 16 g / 10 minutes has the disadvantage that the resulting abrasion resistance becomes insufficient.
  • An abrasion resistance with a grade ⁇ 2 results in a monofilament, which can be easily interwoven into a textile fabric and gives a surprising cleanliness.
  • the monofilament according to the invention has a strength of at least 47 cN / tex with a maximum breaking elongation of less than 45%.
  • the monofilament according to the invention has a mechanical constant of at least 285 cN / tex.
  • the thread-forming monofilament used in all experiments was a polypropylene having a melt flow index (MFI) of 230 ° C. 12.16 kg of 12.0 g / 10 min.
  • MFI melt flow index
  • Each 5 kg of polypropylene granules are mixed using tinplate cans and a tumble mixer. The mixing was carried out according to the additive according to three different methods. The individual methods are explained under the examples. The granulate / additive mixture is added directly to the extruder and melted.
  • the granulate mixture consisting of polypropylene and modified polyolefin, PP / PE melting point> 140 ° C., is mixed for one hour.
  • the granulate mixture consisting of polypropylene and impact modifier is mixed for one hour.
  • an antistatic agent such as 0.1% Atmer 110 (trademark of Uniqema) is advantageous in these mixtures.
  • the plasticizer is added to the polypropylene granules followed by mixing for two hours.
  • the powdery additives such as fillers, lubricants, heat stabilizers, etc.
  • the granules are first rolled for half an hour with an adhesion promoter such as Basilon M100 (trademark of Bayer AG), then the remaining additives are added and mixed for a further 1.5 hours.
  • Basilon M100 trademark of Bayer AG
  • a lubricant in different amounts is added to the polymer. Same preparation as example 5.
  • test 17 contains two different lubricants (0.2 and 0.05%) and Aerosil 0.05%.
  • Experiments 18 + 19 are based on three additives 0.35% heat stabilizer, 0.3% calcium carbonate and 0.15% lubricant 4 0.5% heat stabilizer, 0.2% lubricant 4 and 0.01% aerosol
  • Fig. 1 the curve when adding a modified polypropylene / polyethylene with a melting point> 140 ° C according to. Example 2 shown.
  • the pure polypropylene shows a rating of 4 in the abrasion test, which represents unsatisfactory abrasion in the fabric. It is surprising that, with increasing addition, the abrasion can be initially improved up to an addition of 10% by weight and worsen again at higher additions.
  • FIG. 2 shows the curve when adding an impact modifier. With increasing amount of additive, the abrasion initially decreases and reaches a minimum at 5% by weight. Another raise brings no advantage.
  • Fig. 3 the curve is shown with the addition of different lubricants.
  • small amounts added initially bring a marked improvement in the abrasion behavior.
  • An increase brings no further improvement in the abrasion behavior.
  • novel fine monofilaments are suitable for abrasion-free production of screen fabrics for filtration and screen printing.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Artificial Filaments (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
EP02704535A 2001-04-24 2002-03-22 Verfahren zur herstellung von feinen monofilamenten aus polypropylen, feine monofilamente aus polypropylen sowie deren verwendung Expired - Lifetime EP1392897B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH7472001 2001-04-24
CH747012001 2001-04-24
PCT/CH2002/000171 WO2002086207A1 (de) 2001-04-24 2002-03-22 Verfahren zur herstellung von feinen monofilamenten aus polypropylen, feine monofilamente aus polypropylen sowie deren verwendung

Publications (2)

Publication Number Publication Date
EP1392897A1 EP1392897A1 (de) 2004-03-03
EP1392897B1 true EP1392897B1 (de) 2006-05-10

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EP02704535A Expired - Lifetime EP1392897B1 (de) 2001-04-24 2002-03-22 Verfahren zur herstellung von feinen monofilamenten aus polypropylen, feine monofilamente aus polypropylen sowie deren verwendung

Country Status (10)

Country Link
US (3) US6805955B2 (zh)
EP (1) EP1392897B1 (zh)
JP (1) JP2004524455A (zh)
CN (1) CN100355952C (zh)
AT (1) ATE325910T1 (zh)
DE (1) DE50206749D1 (zh)
ES (1) ES2259369T3 (zh)
PT (1) PT1392897E (zh)
TW (1) TW579394B (zh)
WO (1) WO2002086207A1 (zh)

Families Citing this family (10)

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BR0215107A (pt) * 2001-12-05 2004-11-03 Rhodia Industrial Yarns Ag Processo de fabricação de monofilamentos de polipropileno, monofilamentos de propileno e seu uso
FR2868437B1 (fr) * 2004-03-30 2006-05-26 Rhodia Chimie Sa Monofilaments a base de polypropylene a proprietes ameliorees
FR2868438B1 (fr) * 2004-03-30 2006-10-20 Rhodia Chimie Sa Monofilaments a base de polypropylene a proprietes ameliorees
CN101851793B (zh) * 2009-03-31 2011-07-20 中国水产科学研究院东海水产研究所 养殖网箱或拖网渔具纲索用改性丙纶鬃丝制备方法
CN101851798B (zh) * 2009-03-31 2011-07-20 中国水产科学研究院东海水产研究所 渔用多元共混改性丙纶单丝制备方法
CN101851796B (zh) * 2009-03-31 2012-05-30 中国水产科学研究院东海水产研究所 渔用绳索制作用耐磨共混改性聚丙烯单丝加工方法
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CA2894148A1 (en) * 2012-12-20 2014-06-26 Dsm Ip Assets B.V. Polyolefin yarns and method for manufacturing
CN104988591B (zh) * 2015-06-12 2017-01-25 浙江理工大学 一种利用增韧改性技术制备柔韧聚丙烯纺粘非织造材料的方法

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Also Published As

Publication number Publication date
US6805955B2 (en) 2004-10-19
US20040265584A1 (en) 2004-12-30
PT1392897E (pt) 2006-09-29
CN100355952C (zh) 2007-12-19
EP1392897A1 (de) 2004-03-03
DE50206749D1 (de) 2006-06-14
JP2004524455A (ja) 2004-08-12
WO2002086207A1 (de) 2002-10-31
US7214426B2 (en) 2007-05-08
US20040142169A1 (en) 2004-07-22
TW579394B (en) 2004-03-11
CN1505704A (zh) 2004-06-16
ES2259369T3 (es) 2006-10-01
ATE325910T1 (de) 2006-06-15
US20050129940A1 (en) 2005-06-16

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