US20020006263A1 - Compound for the sheaths of optical or electrical cables - Google Patents

Compound for the sheaths of optical or electrical cables Download PDF

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Publication number
US20020006263A1
US20020006263A1 US09/880,033 US88003301A US2002006263A1 US 20020006263 A1 US20020006263 A1 US 20020006263A1 US 88003301 A US88003301 A US 88003301A US 2002006263 A1 US2002006263 A1 US 2002006263A1
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US
United States
Prior art keywords
compound
compound according
sheaths
phosphoric acid
optical
Prior art date
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Application number
US09/880,033
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US6404971B2 (en
Inventor
Alfred Mehl
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BASF SE
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Nexans SA
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Publication of US20020006263A1 publication Critical patent/US20020006263A1/en
Application granted granted Critical
Publication of US6404971B2 publication Critical patent/US6404971B2/en
Assigned to BASF SE reassignment BASF SE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NEXANS
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29Protection against damage caused by extremes of temperature or by flame
    • H01B7/295Protection against damage caused by extremes of temperature or by flame using material resistant to flame
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04Polyurethanes
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G02B1/045Light guides
    • G02B1/048Light guides characterised by the cladding material
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401Optical cables
    • G02B6/4429Means specially adapted for strengthening or protecting the cables
    • G02B6/4436Heat resistant

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Organic Insulating Materials (AREA)
  • Communication Cables (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Insulated Conductors (AREA)

Abstract

A compound for the sheaths of optical or electrical cables, based on polyurethane with the addition of so-called fire retardants, wherein the fire retardant comprises a metal hydroxide and at least one phosphoric acid ester.

Description

  • This application is based on and claims the benefit of European Patent Application No. 00401675.4 filed Jun. 14, 2000, which is incorporated by reference herein. [0001]
  • BACKGROUND OF THE INVENTION
  • The invention concerns a compound polyurethane-based for the sheaths of optical or electrical cables. [0002]
  • Thermoplastic polyurethane (TPU) is a material which, due to its excellent mechanical properties, is often used as a material for sheaths for cables and lines which are subject to high mechanical stresses. However, thermoplastic polyurethane does not display any fire retardant behavior. In case of fire, the polyurethane drips off of the cable or line, respectively. [0003]
  • Through the addition of so-called fire retardants, thermoplastic polyurethane can have its fire resistance improved enough that the cables and lines produced with it meet the necessary requirements. [0004]
  • Halogenated substances in combination with antimony trioxide, as well as nonhalogenated substances such as, for example, phosphoric acid esters or a combination of such esters with nitrogenous compounds, are known as fire retardants for thermoplastic polyurethanes. [0005]
  • Halogenated substances have the disadvantage that in case of fire, compounds are produced that are both toxic and generate corrosive gases (hydrochloric acid). Compounds which contain such fire retardants therefore do not meet the requirements in regard to the corrosiveness of gases produced in case of fire (IEC [International Electrotechnical Commission] 754-2) and freedom from halogens (VDE [Association of German Electrical Engineers] 0472/section 815). [0006]
  • The halogen-free fire retardants do not produce corrosive gases in case of fire, but they have the disadvantage that, if only phosphoric acid esters are used, the fire resistance is not sufficient, or, if additional nitrogenous substances are used, considerable quantities of nitrogenous, toxic compounds such as nitrogen oxides (NO[0007] x) and hydrogen cyanide (HCN, prussic acid) are released.
  • Fire retardant silicone compositions for thermoplastics are known, e.g., from EP 0 537 013 B1, in which a fire retardant in the form of a powder, consisting of silicone oil, silicone resin, and magnesium hydroxide, all in very precise ratios to one another, is added to thermoplastics which are normally flammable. The thermoplastic can be a polyethylene, polypropylene, polycarbonate, polystyrene, polyurethane, polyamide, or another thermoplastic. The mixture can, furthermore, have salts of the phosphoric acids or, as a filler, aluminum oxide trihydrate, among other things, added to it. [0008]
  • The essential effect in regard to fire resistance is achieved in EP 0 537 013 B1 through the silicon oil, the silicon resin soluble in the silicon oil, and the magnesium hydroxide. [0009]
  • SUMMARY OF THE INVENTION
  • It is an object of the present invention to provide a TPU-based compound which contains neither halogenated nor nitrogenous substances and fulfills the prescriptions according to IEC 754-2 and VDE 0472/section 815. [0010]
  • This object is achieved by a compound wherein a metal hydroxide and at least one phosphoric acid ester are added to the compound as a fire retardant. [0011]
  • The compound according to the teaching of the invention meets the requirements in regard to fire resistance, corrosiveness, and freedom from halogens and, in case of fire, only generates a fraction of the toxic substances NO[0012] x and NCN which are released when the known products are used.
  • Further advantageous features of the invention will be apparent from the detailed description below.[0013]
  • DETAILED DESCRIPTION OF THE INVENTION
  • The invention will be described in more detail with reference to an exemplary embodiment. [0014]
  • A compound was produced from [0015]
  • 100 parts polyether urethane of Shore hardness A87 [0016]
  • 18.6 parts resorcinol-bis-diphenyl phosphate [0017]
  • 66.7 parts aluminum hydroxide and/or aluminum oxide trihydrate [0018]
  • 0.6 parts erucic acid amide [0019]
  • and the compound was granulated. The granulate was fed into an extruder and extruded at a temperature of 200° C. onto a cable core consisting of several insulated electrical lines stranded together. [0020]
  • After cooling, several samples were subjected to a fire test. No corrosive gases were released and only a small amount of toxic gases was measured. [0021]

Claims (8)

What is claimed is:
1. A compound for the sheaths of optical or electrical cables, said compound comprising a polyurethane with the addition of a fire retardant, wherein said fire retardant comprises metal hydroxide and at least one phosphoric acid ester.
2. A compound according to claim 1, wherein said polyurethane is a polyether urethane.
3. A compound according to claim 1, wherein said metal hydroxide comprises at least one of aluminum hydroxide and aluminum oxide trihydrate.
4. A compound according to claim 1, wherein said metal hydroxide comprises magnesium hydroxide.
5. A compound according to claim 1, wherein said phosphoric acid ester is a low-volatility phosphoric acid ester.
6. A compound according to claim 1, wherein said compound contains 30 to 70 parts polyether urethane, and 25 to 60 parts aluminum hydroxide and/or aluminum oxide trihydrate.
7. A compound according to claim 6, wherein resorcinol-bis-diphenyl phosphate.
8. An electrical cable or line with a sheath made of a compound according to claim 1, wherein the sheath is cross-linked, preferably cross-linked by irradiation.
US09/880,033 2000-06-14 2001-06-14 Compound for the sheaths of optical or electrical cables Expired - Lifetime US6404971B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP00401675.4 2000-06-14
EP00401675A EP1167429B1 (en) 2000-06-14 2000-06-14 Mixture for optical or electrical cable sheaths
EP00401675 2000-06-14

Publications (2)

Publication Number Publication Date
US20020006263A1 true US20020006263A1 (en) 2002-01-17
US6404971B2 US6404971B2 (en) 2002-06-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US09/880,033 Expired - Lifetime US6404971B2 (en) 2000-06-14 2001-06-14 Compound for the sheaths of optical or electrical cables

Country Status (6)

Country Link
US (1) US6404971B2 (en)
EP (1) EP1167429B1 (en)
AT (1) ATE258204T1 (en)
DE (1) DE50005081D1 (en)
DK (1) DK1167429T3 (en)
ES (1) ES2209780T3 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100047469A1 (en) * 2006-12-21 2010-02-25 Basf Se Article, especially cable sheathing, comprising thermoplastic polyurethane and crosslinked polyethylene in adhesive-bonded form
WO2011011921A1 (en) * 2009-07-31 2011-02-03 Dow Global Technologies Inc. Flame retardant thermoplastic elastomer
JP2012530801A (en) * 2009-06-18 2012-12-06 ダウ グローバル テクノロジーズ エルエルシー Color-stable halogen-free flame retardant composition
WO2013029250A1 (en) * 2011-08-31 2013-03-07 Dow Global Technologies Llc Migration-free, halogen-free, flame retardant thermoplastic polyurethane compositions
FR2987367A1 (en) * 2012-02-28 2013-08-30 Commissariat Energie Atomique FIRE PROTECTIVE MATERIAL, HIGH PRESSURE STORAGE TANK COATED WITH SUCH MATERIAL, PROCESSES FOR THEIR PREPARATION AND USES THEREOF
CN104159973A (en) * 2012-03-13 2014-11-19 巴斯夫欧洲公司 Flame-retardant thermoplastic polyurethane comprising coated metal hydroxides based on aluminum
CN105542443A (en) * 2016-01-28 2016-05-04 常熟市中联光电新材料有限责任公司 Halogen-free flame-retardant thermal plastic polyurethane cable sheath material and preparation method thereof
US9670337B2 (en) 2012-03-13 2017-06-06 Basf Se Flame-retardant thermoplastic polyurethane comprising coated metal hydroxides based on aluminum
KR101785136B1 (en) * 2010-06-03 2017-10-12 다우 글로벌 테크놀로지스 엘엘씨 Halogen-free, flame retardant tpu composite

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7367364B2 (en) * 2003-04-08 2008-05-06 Omega Flex, Inc. Fire retardant jacket for tubing
EP1491580B1 (en) * 2003-06-02 2007-09-26 Nexans Mixture for optical or electrical cable sheaths
DE10343121A1 (en) * 2003-09-16 2005-04-07 Basf Ag Thermoplastic polyurethane containing metal hydroxide
EP2199351A1 (en) 2008-12-19 2010-06-23 Sika Technology AG Fluid film based on silane-terminated polymers
CN104004343B (en) 2009-08-10 2019-03-08 联合碳化化学及塑料技术有限责任公司 Composition for thermoplastic elastomer comprising intumescence fire retardant He the flame retardancy synergists for being not based on phosphorus
JP5499177B2 (en) 2009-10-28 2014-05-21 ダウ グローバル テクノロジーズ エルエルシー Thermoplastic polyurethane composition having high insulation resistance
US9334395B2 (en) 2009-12-11 2016-05-10 Dow Global Technologies Llc Thermoplastic polymer blends comprising dynamically crosslinked polyurethane in an olefin polymer matrix
KR20170051524A (en) 2009-12-31 2017-05-11 다우 글로벌 테크놀로지스 엘엘씨 Halogen-free, flame retardant thermoplastic compositions for wire and cable applications
WO2011120225A1 (en) * 2010-03-31 2011-10-06 Dow Global Technologies Llc Migration-free, halogen-free, flame retardant thermoplastic polyurethane compositions
EP2374843A1 (en) * 2010-04-07 2011-10-12 Nexans Degradation-resistant polyurethane mixture
US9336927B2 (en) 2010-12-17 2016-05-10 Dow Global Technologies Llc Halogen-free, flame retardant composition for wire and cable applications
CA2839031C (en) 2011-06-21 2017-02-14 Dow Global Technologies Llc Halogen-free flame-retardant polymer composition comprising piperazine based intumescent flame retardant
US10109393B2 (en) 2011-08-31 2018-10-23 Dow Global Technologies Llc Halogen-free flame retardant TPU composition for wire and cable
ES2632263T3 (en) 2012-06-22 2017-09-12 Basf Se Fire retardant thermoplastic polyurethane based on polycarbonate diols
BR112014026397A2 (en) 2012-07-27 2017-06-27 Basf Se composition and use of a composition
CN105308115B (en) 2013-06-28 2018-06-12 陶氏环球技术有限责任公司 Plastics photovoltaic module frame and bracket and the composition for being used to prepare it
JP6554471B2 (en) 2013-12-20 2019-07-31 ビーエーエスエフ ソシエタス・ヨーロピアBasf Se Flame retardant thermoplastic polyurethane
US10047214B2 (en) 2013-12-20 2018-08-14 Basf Se Flame-retardant thermoplastic polyurethane
CZ2015375A3 (en) 2015-06-03 2016-12-14 Borcad Cz S.R.O. Polyurethane foam with reduced flammability, reduced smoke generation and low smoke toxicity
EP3645617A4 (en) 2017-06-29 2021-02-17 Dow Global Technologies Llc Polyolefin composition
MX2020011128A (en) 2018-05-25 2020-11-11 Union Carbide Corp Moisture-curable polyolefin formulation.
JP2023507089A (en) 2019-12-19 2023-02-21 ダウ グローバル テクノロジーズ エルエルシー Polyolefin composition
WO2022093682A1 (en) 2020-10-30 2022-05-05 Dow Global Technologies Llc Polyolefin formulation
KR20240041976A (en) 2021-08-04 2024-04-01 다우 글로벌 테크놀로지스 엘엘씨 Polyolefin formulations containing combinations of voltage stabilizer compounds
TW202307117A (en) 2021-08-04 2023-02-16 美商陶氏全球科技有限責任公司 Polyolefin formulation containing crotophenone compound
US20230175615A1 (en) * 2021-12-02 2023-06-08 Omega Flex, Inc. Arc resistant corrugated tubing system with protective jacket and fitting
WO2024002869A1 (en) 2022-06-27 2024-01-04 Basf Se Thermoplastic polyurethane (tpu) composition with improved properties

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FR2246606B3 (en) * 1973-10-09 1977-07-15 Grace W R Ltd
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DE3113385A1 (en) * 1981-04-02 1982-10-21 Bayer Ag, 5090 Leverkusen LOW-HALOGEN, THERMOPLASTIC POLYURETHANE ELASTOMER IMPROVED FLAME RESISTANCE THROUGH THE ADDITION OF A 4-SUBSTANCE ADDITIVE COMBINATION, ITS PRODUCTION AND USE
DE3904802A1 (en) * 1989-02-17 1990-08-23 Standard Elektrik Lorenz Ag POLYMER BLEND
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JPH059376A (en) * 1991-07-03 1993-01-19 Nippon Mirakutoran Kk Flame-retardant urethane composition
US5401788A (en) * 1993-03-16 1995-03-28 Daihachi Chemical Industry Co., Ltd. Organic phosphorus compounds and flame-retarded resin compositions containing the same
ATE178915T1 (en) * 1996-02-14 1999-04-15 Sika Ag FLAME RETARDANT POLYURETHANE SYSTEMS

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100047469A1 (en) * 2006-12-21 2010-02-25 Basf Se Article, especially cable sheathing, comprising thermoplastic polyurethane and crosslinked polyethylene in adhesive-bonded form
JP2012530801A (en) * 2009-06-18 2012-12-06 ダウ グローバル テクノロジーズ エルエルシー Color-stable halogen-free flame retardant composition
WO2011011921A1 (en) * 2009-07-31 2011-02-03 Dow Global Technologies Inc. Flame retardant thermoplastic elastomer
EP2459632A1 (en) 2009-07-31 2012-06-06 Dow Global Technologies LLC (formerly Known As Dow Global Technologies Inc.) Flame retardant thermoplastic elastomer
US8987597B2 (en) 2009-07-31 2015-03-24 Dow Global Technologies Llc Flame retardant thermoplastic elastomer
KR101785136B1 (en) * 2010-06-03 2017-10-12 다우 글로벌 테크놀로지스 엘엘씨 Halogen-free, flame retardant tpu composite
WO2013029250A1 (en) * 2011-08-31 2013-03-07 Dow Global Technologies Llc Migration-free, halogen-free, flame retardant thermoplastic polyurethane compositions
CN103874735A (en) * 2011-08-31 2014-06-18 陶氏环球技术有限责任公司 Migration-free, halogen-free, flame retardant thermoplastic polyurethane compositions
US9080038B2 (en) 2011-08-31 2015-07-14 Dow Global Technologies Llc Migration-free, halogen-free, flame retardant thermoplastic polyurethane compositions
KR101825258B1 (en) 2011-08-31 2018-02-02 다우 글로벌 테크놀로지스 엘엘씨 Migration-free, halogen-free, flame retardant thermoplastic polyurethane compositions
FR2987367A1 (en) * 2012-02-28 2013-08-30 Commissariat Energie Atomique FIRE PROTECTIVE MATERIAL, HIGH PRESSURE STORAGE TANK COATED WITH SUCH MATERIAL, PROCESSES FOR THEIR PREPARATION AND USES THEREOF
US10765897B2 (en) 2012-02-28 2020-09-08 Commissariat A L'energie Atomique Et Aux Energies Alternatives Fire protection material, high-pressure storage tank coated with said material, methods for preparing same, and uses thereof
CN104159974A (en) * 2012-03-13 2014-11-19 巴斯夫欧洲公司 Flame-retardant thermoplastic polyurethane comprising coated metal hydroxides based on aluminium
US9670337B2 (en) 2012-03-13 2017-06-06 Basf Se Flame-retardant thermoplastic polyurethane comprising coated metal hydroxides based on aluminum
CN104159973A (en) * 2012-03-13 2014-11-19 巴斯夫欧洲公司 Flame-retardant thermoplastic polyurethane comprising coated metal hydroxides based on aluminum
CN105542443A (en) * 2016-01-28 2016-05-04 常熟市中联光电新材料有限责任公司 Halogen-free flame-retardant thermal plastic polyurethane cable sheath material and preparation method thereof

Also Published As

Publication number Publication date
ATE258204T1 (en) 2004-02-15
US6404971B2 (en) 2002-06-11
DK1167429T3 (en) 2004-03-08
EP1167429B1 (en) 2004-01-21
ES2209780T3 (en) 2004-07-01
DE50005081D1 (en) 2004-02-26
EP1167429A1 (en) 2002-01-02

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