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US20050080170A1 - Flame-retardant molded component - Google Patents

Flame-retardant molded component Download PDF

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Publication number
US20050080170A1
US20050080170A1 US10/999,755 US99975504A US2005080170A1 US 20050080170 A1 US20050080170 A1 US 20050080170A1 US 99975504 A US99975504 A US 99975504A US 2005080170 A1 US2005080170 A1 US 2005080170A1
Authority
US
United States
Prior art keywords
weight percent
flame retardant
nylon
monofilament
melamine cyanurate
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.)
Abandoned
Application number
US10/999,755
Inventor
Lee Martin
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.)
Federal Mogul Technology Ltd
Original Assignee
T&N Technology Ltd
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 T&N Technology Ltd filed Critical T&N Technology Ltd
Priority to US10/999,755 priority Critical patent/US20050080170A1/en
Assigned to T&N TECHNOLOGY LIMITED reassignment T&N TECHNOLOGY LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MARTIN, LEE HAMILTON
Publication of US20050080170A1 publication Critical patent/US20050080170A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • C08K5/00Use of organic ingredients
    • C08K5/49Phosphorus-containing compounds
    • C08K5/51Phosphorus bound to oxygen
    • C08K5/53Phosphorus bound to oxygen bound to oxygen and to carbon only
    • C08K5/5317Phosphonic compounds, e.g. R—P(:O)(OR')2
    • C08K5/5333Esters of phosphonic acids
    • 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
    • C08K5/00Use of organic ingredients
    • C08K5/16Nitrogen-containing compounds
    • C08K5/34Heterocyclic compounds having nitrogen in the ring
    • C08K5/3467Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
    • C08K5/3477Six-membered rings
    • C08K5/3492Triazines
    • C08K5/34928Salts
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00General methods for the manufacture of artificial filaments or the like
    • D01F1/02Addition of substances to the spinning solution or to the melt
    • D01F1/07Addition of substances to the spinning solution or to the melt for making fire- or flame-proof filaments

Definitions

  • This invention is concerned with a flame-retardant molded component.
  • the invention is particularly applicable to monofilaments for formation into braided sleeves used to protect electrical wires or pipes.
  • molded components from polymers such as nylon 6.
  • polymers such as nylon 6.
  • the monofilaments have a diameter of about 0.25 mm to about 3.25 mm.
  • polyamides e.g., nylon 6 or nylon 66
  • polymers with flame retardancy properties by filling them with flame-retardant materials.
  • Typical applications include molded containers for electrical equipment and coatings for electrical wires.
  • Melamine cyanurate is a known flame retardant filler for use in polyamindes for such applications. In the event of fire, the melamine cyanurate decomposes giving off flame-retardant gases. However, as the proportion of melamine cyanurate increases, the flexibility and surface quality of the material decreases making the material prone to cracking.
  • Polyphosphonates are known as flame-retardant fillers in some polymeric matrices. However, they are not effective enough when used alone to enable a molded component to pass-flame retardancy tests.
  • the invention provides a flame-retardant molded component comprising a matrix-forming polymer material, characterized in that the component also comprises 5 to 20 percent of melamine cyanurate and a 3 to 10 weight percent of polyphosphonate.
  • a component according to the invention it is found that the presence of both melamine cyanurate and a polyphosphonate enables a greater proportion of melamine cyanurate to be included before the flexibility and surface quality become unacceptable. Furthermore, since the polyphosphonate itself has flame retardancy properties, the quantity of melamine cyanurate required is reduced.
  • the polyphosphonate also acts as a plasticizer improving the mechanical properties of the component and assisting the dispersion of the melamine cyanurate. In particular, it is found that the component can be molded in the form of a successful flame-retardant monofilament.
  • the quantity of polyphosphonate is 3 to 10 weight percent.
  • the matrix of a component according to the invention is preferably formed from nylon 6, but nylon 12 or 66 are also preferable. Also possible are poly(ethylene terephthalate) and poly(ethylene naphthalate).
  • the polyphosphonate is preferably an organopolyphosphate called Amguard P45 and obtainable from Albright & Wilson.
  • nylon 6 85 weight percent nylon 6 was compounded with 10 weight percent of melamine cyanurate in the form of particles averaging 10 microns in diameter and with 5 percent of Amguard P45.
  • the mixture was extruded as a monofilament having a diameter of 3.25 mm.
  • This monofilament was braided into a protective sleeve in a conventional manner.
  • the sleeve achieved the UL1441 VW-1 requirements for electrical sleeving and passed the UL94 Vo standard for flame retardancy at 0.8 mm thickness.
  • the monofilaments had good flexibility and surface quality.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Artificial Filaments (AREA)
  • Insulating Bodies (AREA)
  • Organic Insulating Materials (AREA)

Abstract

A sleeve for the protection of electrical wires or pipes formed from a flame-retardant nylon or polyester monofilament wherein the monofilament is formed by a process comprising the steps of compounding a mixture consisting essentially of 5 to 20 weight percent melamine cyanurate and 3 to 10 weight percent of an organopolyphosphonate, with the balance being polymer; and extruding as a monofilament the compounded mixture.

Description

    CROSS-REFERENCE TO RELATED APPLICATION
  • This application is a continuation of U.S. patent application Ser. No. 10/179,135, filed Jun. 25, 2002, which is a continuation of U.S. patent application Ser. No. 09/171,611, filed Oct. 22, 1998, now U.S. Pat. No. 6,410,621, which was a U.S. National Stage application of International Application No. PCT/GB97/01171, filed Apr. 29, 1997, which, in turn, claims priority benefit of British Application No. 9609606.0, filed May 8, 1996. The disclosures of all the aforementioned applications are incorporated herein by reference.
  • FIELD OF THE INVENTION
  • This invention is concerned with a flame-retardant molded component. The invention is particularly applicable to monofilaments for formation into braided sleeves used to protect electrical wires or pipes.
  • BACKGROUND OF THE INVENTION
  • It is well-known to form molded components from polymers such as nylon 6. For example, braided sleeves used for protecting wires or pipe from abrasion damage, for example in an engine compartment of a vehicle, are often formed from monofilaments of nylon 6. The monofilaments have a diameter of about 0.25 mm to about 3.25 mm.
  • It is also well-known to provide polyamides, e.g., nylon 6 or nylon 66, or other polymers with flame retardancy properties by filling them with flame-retardant materials. Typical applications include molded containers for electrical equipment and coatings for electrical wires. Melamine cyanurate is a known flame retardant filler for use in polyamindes for such applications. In the event of fire, the melamine cyanurate decomposes giving off flame-retardant gases. However, as the proportion of melamine cyanurate increases, the flexibility and surface quality of the material decreases making the material prone to cracking. For this reason, providing sufficient melamine cyanurate for the required flame retardancy renders the material unsuitable for many uses, for example, for forming into the above-mentioned monofilaments. For this reason, the protective sleeves referred to above are not formed from flame-retardant monofilaments despite the obvious fire risks present in engine compartments.
  • Polyphosphonates are known as flame-retardant fillers in some polymeric matrices. However, they are not effective enough when used alone to enable a molded component to pass-flame retardancy tests.
  • SUMMARY AND OBJECTS OF THE INVENTION
  • It is an object of the present invention to provide a flame-retardant molded component which combines good flame-retardancy properties with good flexibility and good surface quality.
  • DETAILED DESCRIPTION OF THE INVENTION
  • The invention provides a flame-retardant molded component comprising a matrix-forming polymer material, characterized in that the component also comprises 5 to 20 percent of melamine cyanurate and a 3 to 10 weight percent of polyphosphonate.
  • In a component according to the invention, it is found that the presence of both melamine cyanurate and a polyphosphonate enables a greater proportion of melamine cyanurate to be included before the flexibility and surface quality become unacceptable. Furthermore, since the polyphosphonate itself has flame retardancy properties, the quantity of melamine cyanurate required is reduced. The polyphosphonate also acts as a plasticizer improving the mechanical properties of the component and assisting the dispersion of the melamine cyanurate. In particular, it is found that the component can be molded in the form of a successful flame-retardant monofilament.
  • Preferably, the quantity of polyphosphonate is 3 to 10 weight percent.
  • The matrix of a component according to the invention is preferably formed from nylon 6, but nylon 12 or 66 are also preferable. Also possible are poly(ethylene terephthalate) and poly(ethylene naphthalate).
  • The polyphosphonate is preferably an organopolyphosphate called Amguard P45 and obtainable from Albright & Wilson.
  • There now follows a detailed description of an example which is illustrative of the invention.
  • In the example, 85 weight percent nylon 6 was compounded with 10 weight percent of melamine cyanurate in the form of particles averaging 10 microns in diameter and with 5 percent of Amguard P45. The mixture was extruded as a monofilament having a diameter of 3.25 mm. This monofilament was braided into a protective sleeve in a conventional manner. The sleeve achieved the UL1441 VW-1 requirements for electrical sleeving and passed the UL94 Vo standard for flame retardancy at 0.8 mm thickness. The monofilaments had good flexibility and surface quality.

Claims (7)

1. A sleeve for the protection of electrical wires or pipes comprising flame retardant polyester monofilament formed by a process comprising the steps of compounding a mixture consisting essentially of 5 to 20 weight percent melamine cyanurate and 3 to 10 weight percent of an organopolyphosphonate, with the balance being a polymer selected from the group consisting of poly(ethylene terephthalate) and poly(ethylene naphthalate); and extruding as a monofilament said compounded mixture.
2. The flame retardant sleeve of claim 1, wherein the flame retardant polyester monofilament comprises from 5 to 15 weight percent of melamine cyanurate.
3. The flame retardant sleeve of claim 1, wherein the flame retardant polyester monofilament comprises 10 weight percent of melamine cyanurate and 5 weight percent of organopolyphosphonate.
4. A sleeve for the protection of electrical wires or pipes comprising flame retardant nylon monofilament formed by a process comprising the steps of compounding a mixture consisting essentially of 5 to 20 weight percent melamine cyanurate and 3 to 10 weight percent of an organopolyphosphonate, with the balance being a polymer selected from the group consisting of Nylon 6, Nylon 12 and Nylon 66; and extruding as a monofilament said compounded mixture.
5. The flame retardant sleeve of claim 4, wherein the flame retardant nylon monofilament comprises from 5 to 15 weight percent of melamine cyanurate.
6. The flame retardant sleeve of claim 4, wherein the flame retardant nylon monofilament comprises 10 weight percent of melamine cyanurate and 5 weight percent of organopolyphosphonate.
7. The flame retardant sleeve of claim 4, wherein the flame retardant nylon monofilament polymer is Nylon 6.
US10/999,755 1996-05-08 2004-11-30 Flame-retardant molded component Abandoned US20050080170A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/999,755 US20050080170A1 (en) 1996-05-08 2004-11-30 Flame-retardant molded component

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GBGB9609606.0A GB9609606D0 (en) 1996-05-08 1996-05-08 Fire-resistant monofilament
GB9609606.0 1996-05-08
US09/171,611 US6410621B1 (en) 1996-05-08 1997-04-29 Flame-retardant moulded component
US10/179,135 US6828365B2 (en) 1996-05-08 2002-06-25 Flame-retardant molded component
US10/999,755 US20050080170A1 (en) 1996-05-08 2004-11-30 Flame-retardant molded component

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US10/179,135 Continuation US6828365B2 (en) 1996-05-08 2002-06-25 Flame-retardant molded component

Publications (1)

Publication Number Publication Date
US20050080170A1 true US20050080170A1 (en) 2005-04-14

Family

ID=10793361

Family Applications (3)

Application Number Title Priority Date Filing Date
US09/171,611 Expired - Fee Related US6410621B1 (en) 1996-05-08 1997-04-29 Flame-retardant moulded component
US10/179,135 Expired - Fee Related US6828365B2 (en) 1996-05-08 2002-06-25 Flame-retardant molded component
US10/999,755 Abandoned US20050080170A1 (en) 1996-05-08 2004-11-30 Flame-retardant molded component

Family Applications Before (2)

Application Number Title Priority Date Filing Date
US09/171,611 Expired - Fee Related US6410621B1 (en) 1996-05-08 1997-04-29 Flame-retardant moulded component
US10/179,135 Expired - Fee Related US6828365B2 (en) 1996-05-08 2002-06-25 Flame-retardant molded component

Country Status (7)

Country Link
US (3) US6410621B1 (en)
EP (1) EP0898594B1 (en)
JP (1) JP2000509738A (en)
DE (1) DE69701040T2 (en)
ES (1) ES2140230T3 (en)
GB (1) GB9609606D0 (en)
WO (1) WO1997042264A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102939357A (en) * 2010-06-16 2013-02-20 费德罗-莫格尔动力系公司 Flame-retardant compound, continuous materials and products constructed therefrom and methods of manufacture thereof
US8604105B2 (en) 2010-09-03 2013-12-10 Eastman Chemical Company Flame retardant copolyester compositions

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9609606D0 (en) * 1996-05-08 1996-07-10 T & N Technology Ltd Fire-resistant monofilament
NL1006525C2 (en) * 1997-07-10 1999-01-12 Dsm Nv Halogen-free flame-retardant thermoplastic polyester composition.
FR2851581B1 (en) * 2003-02-21 2007-04-06 Rhodianyl FIBERS, FIBERS, FILAMENTS AND FIRE RETARDED TEXTILE ARTICLES
US20070228343A1 (en) * 2004-05-13 2007-10-04 Michael Roth Flame Retardants
US20080237194A1 (en) * 2004-07-09 2008-10-02 S & C Electric Co. Metal-hydrate containing arc-extinguishing compositions and methods
US20060006144A1 (en) * 2004-07-09 2006-01-12 S & C Electric Co. Arc-extinguishing composition and articles manufactured therefrom
US8268916B2 (en) * 2006-09-25 2012-09-18 Federal-Mogul World Wide, Inc. Flame-retardant compound and method of forming a continuous material therefrom
US20080075983A1 (en) * 2006-09-25 2008-03-27 Ming-Ming Chen Flame-retardant filament and method of manufacture thereof and protective sleeves constructed therefrom
US20090043013A1 (en) * 2007-07-16 2009-02-12 Frx Polymers, Llc Flame retardant engineering polymer compositions
WO2010026230A1 (en) * 2008-09-05 2010-03-11 Thor Gmbh Flame-retardant composition comprising a phosphonic acid derivative
US8697786B2 (en) 2010-06-16 2014-04-15 Federal Mogul Powertrain, Inc. Flame-retardant compound, continuous materials and products constructed therefrom and methods of manufacture thereof
TW201439222A (en) 2013-01-22 2014-10-16 Frx Polymers Inc Phosphorus-containing epoxy compound and composition derived therefrom
US9879137B2 (en) 2013-08-08 2018-01-30 Polyone Corporation Flame retardant poly(hexamethylene adipamide)
US9879136B2 (en) 2013-08-08 2018-01-30 Polyone Corporation Flame retardant poly(hexano-6-lactam)

Citations (7)

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Publication number Priority date Publication date Assignee Title
US4035442A (en) * 1976-05-20 1977-07-12 E. I. Du Pont De Nemours And Company Polyester filaments flame retarded with end-capped poly(m-phenylene cyclohexylphosphonate)
US4257931A (en) * 1980-01-29 1981-03-24 American Cyanamid Company Flame retardant poly(butylene terephthalate) compositions comprising melamine pyrophosphate and a phosphonate
US4788259A (en) * 1986-04-22 1988-11-29 Bayer Aktiengesellschaft Flame-proof polyamides
US4866114A (en) * 1987-09-30 1989-09-12 Basf Aktiengesellschaft Self-extinguishing, thermoplastic polyphenylene ether/polyamide molding materials and their use for the production of moldings
US5837760A (en) * 1994-03-16 1998-11-17 Elastogran Gmbh Self-extinguishing thermoplastic polyurethanes and their preparation
US5859147A (en) * 1993-12-23 1999-01-12 Ems-Inventa Ag Amorphous, transparent polyamide compositions and articles having reduced flammability
US6410621B1 (en) * 1996-05-08 2002-06-25 T&N Technology Limited Flame-retardant moulded component

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US4199534A (en) * 1978-04-20 1980-04-22 Stauffer Chemical Company Poly (oxyorganophosphate/phosphonate) and process for preparing
DE3149454A1 (en) * 1981-12-14 1983-06-23 Chemische Werke Hüls AG, 4370 Marl METHOD FOR THE PRODUCTION OF POLYACRYLNITRILE POLYPHOSPHONIC ACID AND THEIR USE AS A FLAME RETARDANT
DE3800672A1 (en) * 1988-01-13 1989-07-27 Bayer Ag FLAME-RETARDED POLYETHYLENE TEREPHTHALATE MOLDINGS
IT1251154B (en) * 1991-08-07 1995-05-04 Enichem Sintesi PENTAERITRIL PHOSPHONATES AND THEIR USE IN SELF-EXTINGUISHING THERMOPLASTIC POLYMER COMPOSITIONS
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JPH073134A (en) * 1993-06-16 1995-01-06 Toray Ind Inc Flame-retardant polyester resin composition
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4035442A (en) * 1976-05-20 1977-07-12 E. I. Du Pont De Nemours And Company Polyester filaments flame retarded with end-capped poly(m-phenylene cyclohexylphosphonate)
US4257931A (en) * 1980-01-29 1981-03-24 American Cyanamid Company Flame retardant poly(butylene terephthalate) compositions comprising melamine pyrophosphate and a phosphonate
US4788259A (en) * 1986-04-22 1988-11-29 Bayer Aktiengesellschaft Flame-proof polyamides
US4866114A (en) * 1987-09-30 1989-09-12 Basf Aktiengesellschaft Self-extinguishing, thermoplastic polyphenylene ether/polyamide molding materials and their use for the production of moldings
US5859147A (en) * 1993-12-23 1999-01-12 Ems-Inventa Ag Amorphous, transparent polyamide compositions and articles having reduced flammability
US5837760A (en) * 1994-03-16 1998-11-17 Elastogran Gmbh Self-extinguishing thermoplastic polyurethanes and their preparation
US6410621B1 (en) * 1996-05-08 2002-06-25 T&N Technology Limited Flame-retardant moulded component
US6828365B2 (en) * 1996-05-08 2004-12-07 T&N Technology Limited Flame-retardant molded component

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102939357A (en) * 2010-06-16 2013-02-20 费德罗-莫格尔动力系公司 Flame-retardant compound, continuous materials and products constructed therefrom and methods of manufacture thereof
US8604105B2 (en) 2010-09-03 2013-12-10 Eastman Chemical Company Flame retardant copolyester compositions
US8969443B2 (en) 2010-09-03 2015-03-03 Eastman Chemical Company Flame retardant copolyester compositions

Also Published As

Publication number Publication date
EP0898594A1 (en) 1999-03-03
ES2140230T3 (en) 2000-02-16
GB9609606D0 (en) 1996-07-10
WO1997042264A1 (en) 1997-11-13
JP2000509738A (en) 2000-08-02
US20020156160A1 (en) 2002-10-24
US6828365B2 (en) 2004-12-07
DE69701040D1 (en) 2000-02-03
DE69701040T2 (en) 2000-07-13
EP0898594B1 (en) 1999-12-29
US6410621B1 (en) 2002-06-25

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Legal Events

Date Code Title Description
AS Assignment

Owner name: T&N TECHNOLOGY LIMITED, ENGLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MARTIN, LEE HAMILTON;REEL/FRAME:016044/0294

Effective date: 19981005

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION