+

WO1996034055A1 - Compositions de polyester - Google Patents

Compositions de polyester Download PDF

Info

Publication number
WO1996034055A1
WO1996034055A1 PCT/US1996/004757 US9604757W WO9634055A1 WO 1996034055 A1 WO1996034055 A1 WO 1996034055A1 US 9604757 W US9604757 W US 9604757W WO 9634055 A1 WO9634055 A1 WO 9634055A1
Authority
WO
WIPO (PCT)
Prior art keywords
weight
aromatic polyester
polyester
composition according
thermoplastic elastomer
Prior art date
Application number
PCT/US1996/004757
Other languages
English (en)
Inventor
Phu D. Nguyen
Stephen L. Tondre
Alan S. Yeung
Original Assignee
Raychem Corporation
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 Raychem Corporation filed Critical Raychem Corporation
Priority to EP96910766A priority Critical patent/EP0822961A1/fr
Priority to JP8532540A priority patent/JPH11504365A/ja
Publication of WO1996034055A1 publication Critical patent/WO1996034055A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/443—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds
    • H01B3/445—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds from vinylfluorides or other fluoroethylenic compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/302—Polyurethanes or polythiourethanes; Polyurea or polythiourea
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/42—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes polyesters; polyethers; polyacetals
    • H01B3/421—Polyesters
    • H01B3/422—Linear saturated polyesters derived from dicarboxylic acids and dihydroxy compounds

Definitions

  • This invention relates to novel polyester compositions and insulated electrical conductors, especially insulated wires for use as lead wires in refrigeration systems and other hermetically sealed electrical apparatus (often called “hermetic lead wires”) .
  • polyester compositions including compositions which can be melt-shaped, e.g. melt-extruded around a conductor to provide an insulating coating.
  • U.S. Patent No. 5,225,635 discloses a hermetic lead wire in which the insulation comprises an insulating layer made by melt-extruding a composition containing chlorosulfonated polyethylene, an acid acceptor, a filler, and a peroxide crosslinking agent.
  • compositions can be made by modifying polytetramethylene terephthalate (also referred to as PTMT, polybutylene terephthalate, and PBT) or a like aromatic polyester by addition thereto of a second polymer which has a recrystallization temperature greater than 150°C and is a polyester block copolymer.
  • PTMT polytetramethylene terephthalate
  • PBT polybutylene terephthalate
  • a second polymer which has a recrystallization temperature greater than 150°C and is a polyester block copolymer.
  • Such compositions have an excellent combination of resistance to deterioration by refrigerants and retention of physical properties when subjected to heat aging, and are particularly suitable for use as insulation on hermetic lead wires.
  • this invention provides a polymeric composition which comprises
  • thermoplastic aromatic polyester which consists essentially of 70 to 100% by weight of tetramethylene terephthalate units and 0 to 30% of other units which are randomly copolymerized with the tetramethylene terephthalate units, and
  • the ratio by weight of the second polymer (2) to the aromatic polyester (1) being from 0.05:1 to 0.35:1.
  • the invention provides an insulated electrical device which comprises a metal conductor, preferably a wire, and an insulating jacket comprising a melt-shaped layer of a composition according to the first preferred aspect of the invention.
  • the invention provides an electrical assembly which comprises a hermetically sealed enclosure containing a refrigerant liquid and an insulated electrical conductor within the enclosure and contacted by the refrigerant, wherein said conductor is as defined in the second preferred aspect of the invention.
  • the invention is chiefly described herein by reference to thermoplastic polyester compositions which can be melt shaped, preferably melt extruded around a conductor, e.g. a solid or stranded wire, to provide an insulating coating around the wire.
  • the wire size is 4 to 38 AWG, preferably 10 to 30 AWG.
  • the wire is to be used as a hermetic lead wire, it is preferably a stranded wire.
  • coating is used herein to denote a coating which is the sole insulating coating around the conductor; or a coating which is one of several insulating coatings around the conductor (the polyester composition being the innermost coating, or the outermost coating, or an intermediate coating or two or more of these coatings) ; or an insulating jacket around two or more conductors each having an individual insulating coating around it.
  • the thickness of the coating is generally 0.05 to 0.8 mm (0.002 to 0.030 inch), preferably 0.08 to 0.4 mm (0.003 to 0.015 inch).
  • the invention is also applicable to other melt-shaped configurations, e.g. tubing and molded parts, and to compositions which can be shaped in other ways, and to compositions whose prime function is not to provide electrical insulation. Parts and percentages given in this specification are by weight unless otherwise noted.
  • Component (1) of the composition is an aromatic polyester which contains 70 to 100%, preferably 95 to 100%, particularly 100%, by weight of tetramethylene terephthalate units, and in which any other units are randomly copolymerized with the tetramethylene terephthalate units.
  • Such other units can be, for example, other alkylene terephthalate units, e.g. ethylene terephthalate units, or aliphatic polyester units.
  • the polyester block copolymer used in this invention is preferably a thermoplastic elastomer (TPE) comprising aromatic polyester blocks and aliphatic polyester blocks.
  • TPE thermoplastic elastomer
  • the melting point of the TPE is preferably greater than
  • the percentage by weight of aromatic polyester blocks is generally 10 to 90%, preferably 37 to 90%, particularly 70 to 90%.
  • the aromatic and aliphatic polyester blocks can be linked together, for example, through ester groups and/or urethane groups, for example through a urethane group of the formula
  • the repeating units in the aliphatic polyester blocks have the formula -0- (CH 2 ) q -O.CO- (CH 2 ) r -C0 wherein each of q and r, which may be the same or different, is at least 2, preferably 2 to 6, particularly 4. Preferably all the repeating units are the same.
  • Suitable block polyesters are available from DSM Engineering Plastics under the trade name "Arnitel”, e.g. Arnitel UM550, UM551, and UX4854, and are described in U.S. Patent No. 4,483,970 (Huntjens et al. , assigned to Akzo N.V.), the disclosure of which is incorporated herein by reference.
  • the ratio by weight of the polyester block copolymer to the aromatic polyester is preferably 0.05:1 to 0.35:1, particularly 0.15:1 to 0.30:1, especially 0.22:1 to 0.27:1.
  • the polymeric component of the compositions preferably consists essentially of the polyester block copolymer and the aromatic polyester, but can also contain one or more other polymers (e.g. other polyesters, including homopolymers and random and block copolymers, such as polyethylene terephthalate) , preferably in amount less than 20%, particularly less than 10%, based on the weight of the TPE.
  • other polymers e.g. other polyesters, including homopolymers and random and block copolymers, such as polyethylene terephthalate
  • compositions can contain non-polymeric ingredients, generally in amount less than 20%, preferably less than 10%, particularly less than 4%, by weight based on the weight of the composition.
  • additives can be inorganic or organic, and include antioxidants, stabilizers, processing aids, coloring agents, fillers and flame retardants, including antimony trioxide, e.g. in amount 3-15%, and brominated flame retardants, e.g. in amount 5 to 15%.
  • suitable additives reference may be made to the documents incorporated herein by reference.
  • the composition preferably has less than 0.8%, particularly less than 0.6%, especially less than 0.35% extractables when subjected to the Freon extraction test described below.
  • Such compositions can for example be obtained by blending an aromatic polyester which has less than 0.3% extractables with a polyester block copolymer which has more than 1.2% extractables in the Freon extraction test.
  • the composition preferably has a similarly low level of extractables in a test which is the same as the Freon extraction test except that the Freon 22 is replaced by the refrigerant actually used.
  • the melt-extruded insulating jacket preferably has an initial elongation of at least 200%, particularly at least 300%, especially at least 360%, and an elongation of at least 200%, particularly at least 300%, especially at least 360%, after aging for 168 hours at 156°C.
  • TPE 1 is the TPE sold by DSM Engineering Plastics under the trade name Arnitel UX4854.
  • TPE 2 is the TPE sold by DSM Engineering Plastics under the tradename Arnitel UM551V.
  • Arnitel UX4854 and UM551V are believed to be TPE's as defined above in which Ar is a phenylene group, each of p, q and r is 4, and the aromatic and aliphatic polyester blocks are linked together through a urethane group of the formula
  • PBT is the polybutylene terephthalate sold by Hoechst
  • WT10, BK10, RD10, RD11, and OR10 are the color concentrates sold by Wilson Color Inc. under the tradenames Wilson-89-WT-10, Wilson-89-BK-10, Wilson-89-RD-10, Wilson-89-RD-ll, and Wilson-89-OR-10, respectively.
  • Resistance to Heat Agin ⁇ is measured by the method of ASTM D 3032, Section 14. The results given are the average times to failure (in hours) for ten specimens aged at the indicated temperature. The Table also includes estimated minimum times for aging at 125°C (with 18k etc. meaning 18,000 hours etc).
  • Extractables is measured by the CFC Extraction Test described in NEMA Publication MW1000, paragraph 3.55.
  • Elon ⁇ ation% and Tensile Strength are measured by the method of ASTM D 3032, Section 14, both initially and after aging for 168 hours at 156°C ("aged" in Table).

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Organic Insulating Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Polyesters Or Polycarbonates (AREA)

Abstract

Compositions polymères renfernant un polyester aromatique thermoplastique, de préférence du polybutylènetéréphthalate et un copolymère bloc de polyester dont la température de recristallisation est supérieure à 150 °C, de préférence un élastomère thermoplastique renfermant des blocs de polyester aromatiques et des blocs de polyester aliphatiques. Le rapport du copolymère bloc au polyester aromatique se situe entre 0,05 à 1 et 0,35 à 1, de préférence entre 0,15 à 1 et 0,30 à 1. Ces compositions se révèlent particulièrement utiles comme isolants sur les câbles conducteurs étanches utilisés dans les systèmes de réfrigération.
PCT/US1996/004757 1995-04-26 1996-04-04 Compositions de polyester WO1996034055A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP96910766A EP0822961A1 (fr) 1995-04-26 1996-04-04 Compositions de polyester
JP8532540A JPH11504365A (ja) 1995-04-26 1996-04-04 ポリエステル組成物

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US42938495A 1995-04-26 1995-04-26
US08/429,384 1995-04-26

Publications (1)

Publication Number Publication Date
WO1996034055A1 true WO1996034055A1 (fr) 1996-10-31

Family

ID=23703002

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/004757 WO1996034055A1 (fr) 1995-04-26 1996-04-04 Compositions de polyester

Country Status (5)

Country Link
EP (1) EP0822961A1 (fr)
JP (1) JPH11504365A (fr)
CA (1) CA2219122A1 (fr)
MX (1) MX9708230A (fr)
WO (1) WO1996034055A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002077100A3 (fr) * 2001-03-21 2003-02-06 Kimberly Clark Co Compositions renforçant la liaison thermique
KR100423233B1 (ko) * 2001-03-21 2004-03-18 엘지전선 주식회사 고강도 난연성 절연물
WO2008066977A2 (fr) 2006-11-27 2008-06-05 Sabic Innovative Plastics Ip B.V. Mélanges de polyester, leurs procédés de fabrication et articles formés à partir de ces mélanges
EP2410616B1 (fr) * 2009-05-27 2014-03-26 Omron Corporation Dispositif électronique résistant à l'huile et son procédé de fabrication

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994016014A1 (fr) * 1993-01-14 1994-07-21 Raychem Corporation Compositions de polyester pour isolation de fils
WO1996002591A1 (fr) * 1994-07-14 1996-02-01 Raychem Corporation Compositions de polyesters

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994016014A1 (fr) * 1993-01-14 1994-07-21 Raychem Corporation Compositions de polyester pour isolation de fils
WO1996002591A1 (fr) * 1994-07-14 1996-02-01 Raychem Corporation Compositions de polyesters

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002077100A3 (fr) * 2001-03-21 2003-02-06 Kimberly Clark Co Compositions renforçant la liaison thermique
GB2390368A (en) * 2001-03-21 2004-01-07 Kimberly Clark Co Compositions for enhanced thermal bonding
KR100423233B1 (ko) * 2001-03-21 2004-03-18 엘지전선 주식회사 고강도 난연성 절연물
GB2390368B (en) * 2001-03-21 2005-04-20 Kimberly Clark Co Compositions for enhanced thermal bonding
US6946195B2 (en) 2001-03-21 2005-09-20 Kimberly-Clark Worldwide, Inc. Compositions for enhanced thermal bonding
WO2008066977A2 (fr) 2006-11-27 2008-06-05 Sabic Innovative Plastics Ip B.V. Mélanges de polyester, leurs procédés de fabrication et articles formés à partir de ces mélanges
EP2410616B1 (fr) * 2009-05-27 2014-03-26 Omron Corporation Dispositif électronique résistant à l'huile et son procédé de fabrication

Also Published As

Publication number Publication date
CA2219122A1 (fr) 1996-10-31
JPH11504365A (ja) 1999-04-20
EP0822961A1 (fr) 1998-02-11
MX9708230A (es) 1998-06-30

Similar Documents

Publication Publication Date Title
EP1923429B1 (fr) Composition de résine ignifuge, et câble électrique et tube isolant l utilisant
EP0224281B1 (fr) Revêtement ignifugé
EP0989147B1 (fr) Résine polyester thermoplastique et fil isolé, câble isolé électriquement et tuyau thermorétractable produits à partir de cette résine
US6087591A (en) Insulated electrical conductors
EP0414748B1 (fr) Composition polymere
EP0182629B1 (fr) Fil et câble électrique
WO1993008234A1 (fr) Compositions thermoplastiques a base de terephtalate de polybutylene destines aux revetements de cables
US5824412A (en) Thermoplastic polybutylene terephthalate compositions for wire coating applications
JPH039140B2 (fr)
EP0754343B1 (fr) Fil d'acier et cable isoles
EP0822961A1 (fr) Compositions de polyester
EP0568923B1 (fr) Câble fonctionnant à hautes températures
WO1996035216A1 (fr) Compositions elastomeres thermoplastiques et conducteurs electriques isoles
US4592955A (en) Insulating covering for strand material
JP3025275B2 (ja) 電線およびケーブル
EP0679171B1 (fr) Fil isole
EP0222507A1 (fr) Pièces moulées de polymères réticulés
JPH03297011A (ja) 薄肉絶縁電線
JPH052927A (ja) 耐熱難燃絶縁電線およびその製造方法
EP0322405A2 (fr) Fil et câble électrique
JPS61228052A (ja) 樹脂組成物
JPH044511A (ja) 絶縁電線
JPH05242732A (ja) 難燃性電気絶縁物及び絶縁電線

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CA JP MX

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 1996910766

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2219122

Country of ref document: CA

Ref country code: CA

Ref document number: 2219122

Kind code of ref document: A

Format of ref document f/p: F

ENP Entry into the national phase

Ref country code: JP

Ref document number: 1996 532540

Kind code of ref document: A

Format of ref document f/p: F

WWP Wipo information: published in national office

Ref document number: 1996910766

Country of ref document: EP

WWR Wipo information: refused in national office

Ref document number: 1996910766

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1996910766

Country of ref document: EP

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载