DE19641396A1 - Flexible insulation for high voltage electric cable or wire with high and migration resistance - Google Patents

Flexible insulation for high voltage electric cable or wire with high and migration resistance

Info

Publication number
DE19641396A1
DE19641396A1 DE19641396A DE19641396A DE19641396A1 DE 19641396 A1 DE19641396 A1 DE 19641396A1 DE 19641396 A DE19641396 A DE 19641396A DE 19641396 A DE19641396 A DE 19641396A DE 19641396 A1 DE19641396 A1 DE 19641396A1
Authority
DE
Germany
Prior art keywords
parts
weight
mixture
ethylene
polyethylene
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.)
Granted
Application number
DE19641396A
Other languages
German (de)
Other versions
DE19641396B4 (en
Inventor
Dieter Alt
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.)
Prysmian Cavi e Sistemi Energia SRL
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DE19641396A priority Critical patent/DE19641396B4/en
Publication of DE19641396A1 publication Critical patent/DE19641396A1/en
Application granted granted Critical
Publication of DE19641396B4 publication Critical patent/DE19641396B4/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H01B3/441—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 alkenes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/14—Peroxides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/54—Silicon-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/54—Silicon-containing compounds
    • C08K5/541—Silicon-containing compounds containing oxygen
    • C08K5/5425—Silicon-containing compounds containing oxygen containing at least one C=C bond
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2312/00—Crosslinking
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
    • C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
    • C08L2666/04—Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof

Landscapes

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

Abstract

Curable, unplasticised insulating mixture for electric cables and wires is based on an ethylene-propylene rubber (EPR) and a minor fraction of polyethylene. It contains (a) 100 parts weight amorphous ethylene-propylene co- or terpolymer (EPM or EPDM) with an ethylene content of 55-65% and Mooney viscosity < 25; (b) 5-20 parts weight polyethylene with a density < 0.92 g/cm<3>; (c) 50-150 parts weight calcined kaolin as filler; and (d) about 1-3 parts weight vinylsilane.

Description

Die Erfindung liegt auf dem Gebiet der elektrischen Kabel und Leitungen und ist bei der Herstellung einer vernetzbaren Iso­ liermischung auf EPR-Basis anzuwenden.The invention is in the field of electrical cables and Lines and is in the process of producing a cross-linkable iso Applying mixture based on EPR.

Als Werkstoff für die Isolierung elektrischer Kabel und Lei­ tungen werden häufig Olefin-Polymere (wie z. B. Polyethylen, PE) Oder Olefin-Copolymere (wie z. B. Ehylen-Propylen-Kaut­ schuk, EPR) und Abmischungen aus diesen Kunststoffen ver­ wendet. Beispielsweise ist für kunststoffisolierte Stark­ stromkabel des Mittelspannungsbereiches eine vernetzbare Iso­ liermischung bekannt, die aus PE und EPR in Anteilen zwischen etwa 80 : 20 und 20 : 80 besteht. Als EPR-Anteil wird ein kri­ stallines Ethylen-Propylen-Copolymerisat mit 78% Ethylenge­ halt verwendet. Der Anteil an PE erhöht die mechanische Fe­ stigkeit und Härte der Mischung. Diese Mischung enthält keine Weichmacher und im wesentlichen auch keinen Füllstoff (DE 31 11 524 A1).As a material for the insulation of electrical cables and lei olefin polymers (such as polyethylene, PE) or olefin copolymers (such as ethylene-propylene chew schuk, EPR) and mixtures of these plastics ver turns. For example, Stark is for plastic insulated Power cable of the medium voltage range a networkable iso lier mixture known from PE and EPR in proportions between about 80:20 and 20:80. A kri stalline ethylene-propylene copolymer with 78% ethylene just used. The proportion of PE increases the mechanical Fe strength and hardness of the mixture. This mixture does not contain any Plasticizer and essentially no filler (DE 31 11 524 A1).

Als Umhüllung für elektrische Kabel und Leitungen ist weiter­ hin eine unvulkanisierte Mischung auf der Basis eines Ethy­ len-Propylen-Copolymerisates mit einem kleineren Anteil eines Polyethylen bekannt, die mit größeren Anteilen einer Gleitmit­ telkombination und eines Füllstoffes versehen ist (DE 23 05 444 B1).As a covering for electrical cables and wires is further towards an unvulcanized mixture based on an Ethy len-propylene copolymer with a smaller proportion of one Polyethylene known with a larger proportion of a glide telkombination and a filler is provided (DE 23 05 444 B1).

Im übrigen ist es auch üblich, vernetzbare Isoliermischungen auf EPR-Basis zu verwenden, die keine weitere Polymerkompo­ nente, dafür aber gewisse Weichmacheranteile enthalten. Bei den verwendeten EPR-Sorten kann es sich sowohl um amorphe Ty­ pen (Ethylengehalt kleiner 65%, Anwendungsbereich: elektri­ sche Isolierung im Niederspannungsbereich) als auch um kri­ stalline Typen (Ethylengehalt größer 65%, Anwendungsbereich:
Hochspannungs-Elektrokabelisolierung) handeln. Die Moone-Vis­ kosität dieser EPR-Typen liegt zwischen 20 und 70. Bei ei­ nigen Anwendungen wird eine besonders flexible Isolation ge­ wünscht. Diese hohe Flexibilität ist bisher nur durch den Zu­ satz von Weichmachern erreichbar (Produktinformation der Fa. DuPont). - Der Nachteil einer mit Weichmachern angereicherten Isoliermischung auf EPR-Basis liegt darin, daß die für bei­ spielsweise Hochspannungsleitungen notwendige Gleich- bzw. Wechselspannungsfestigkeit nicht mit ausreichender Sicherheit erreichbar ist. Bei hohen elektrischen Anforderungen an die Isoliermischungen ist es daher üblich, die Anforderungen be­ züglich der Flexibilität herabzusetzen.In addition, it is also common to use crosslinkable insulating mixtures based on EPR, which do not contain any further polymer components, but do contain certain plasticizer components. The EPR grades used can be both amorphous types (ethylene content less than 65%, application area: electrical insulation in the low-voltage range) and crystalline types (ethylene content greater than 65%, application area:
High-voltage electrical cable insulation). The Moone viscosity of these EPR types is between 20 and 70. For some applications, a particularly flexible insulation is desired. This high degree of flexibility has so far only been achieved by adding plasticizers (product information from DuPont). - The disadvantage of an EPR-based insulating mixture enriched with plasticizers is that the DC or AC voltage strength required for example in high-voltage lines cannot be achieved with sufficient certainty. In the case of high electrical requirements for the insulation mixtures, it is therefore customary to reduce the requirements with regard to flexibility.

Ausgehend von einer vernetzbaren, weichmacherfreien Isolier­ mischung für elektrische Kabel und Leitungen auf der Basis eines Ehtylen-Propylen-Kautschuks mit einem kleineren Anteil eines Polyethylens liegt der Erfindung die Aufgabe zugrunde, die Mischung so zu modifizieren, daß ein flexibler Werkstoff entsteht, der auch hochspannungstechnischen Anforderungen ge­ nügt.Starting from a cross-linkable, plasticizer-free insulation mixture for electrical cables and wires on the base a ethylene-propylene rubber with a smaller proportion of a polyethylene, the invention is based on the object to modify the mixture so that a flexible material arises, which also ge high-voltage requirements is enough.

Zur Lösung dieser Aufgabe ist gemäß der Erfindung vorgesehen, daß die Mischung die folgenden Komponenten enthält: AufTo achieve this object, the invention provides that the mixture contains the following components: On

  • 1) 100 Gew.-Teile eines amorphen Ehtylen-Propylen-Co- oder Terpolymerisats (EPM oder EPDM) mit einem Ehtylengehalt von 55 bis 65%, dessen Mooney-Viskosität kleiner 25 ist,1) 100 parts by weight of an amorphous ethylene-propylene-Co or Terpolymers (EPM or EPDM) with an ethylene content from 55 to 65%, whose Mooney viscosity is less than 25,
  • 2) 5 bis 20 Gew.-Teile eines Polyethylens mit einer Dichte kleiner 0,92 g/cm³,2) 5 to 20 parts by weight of a density polyethylene less than 0.92 g / cm³,
  • 3) 50 bis 150 Gew.-Teile eines Füllstoffes in Form eines kalzinierten Kaolins und3) 50 to 150 parts by weight of a filler in the form of a calcined kaolin and
  • 4) etwa 1 bis 3 Gew.-Teile eines Vinylsilans.4) about 1 to 3 parts by weight of a vinyl silane.

Durch die Verwendung eines EPR-Kautschucks mit einem im obe­ ren Bereich des amorphen Zustandes liegenden Ethylengehalt und durch Zusatz einer gewissen Menge eines Polyethylens/PE geringer Dichte wird der Werkstoff auch ohne Zusatz von Weichmachern hinreichend flexibel. Der Anteil an PE kann da­ bei innerhalb des angegebenen Bereiches variiert und dadurch die gewünschte Härte (Shore A) eingestellt werden. - Die ge­ ringe Viskosität des verwendeten EPR-Kautschucks erleichtert das Verarbeiten im Extruder. Der Einsatz dieser speziellen EPR-Type, die im Handel beispielsweise unter dem Warenzeichen "Nordel 2522" der Fa. DuPont erhältlich ist, ermöglicht auch die Verwendung von calciniertem Kaolin als Füllstoff, ohne daß dadurch die geforderten elektrischen Eigenschaften unter­ schritten werden. Zur Verbesserung der Feuchteresistenz und der Zugfestigkeit wird der Mischung weiterhin ein Vinylsilan zugegeben. Alternativ dazu kann auch ein silanisiertes Kaolin als Füllstoff verwendet werden.By using an EPR rubber with one in the above ren range of the amorphous state ethylene content and by adding a certain amount of a polyethylene / PE The material becomes low density even without the addition of Plasticizers sufficiently flexible. The proportion of PE can be there varies within the specified range and thereby the desired hardness (Shore A) can be set. - The ge rings viscosity of the EPR rubber used relieved processing in the extruder. The use of this special EPR-Type, which is commercially available, for example, under the trademark "Nordel 2522" from DuPont is also possible the use of calcined kaolin as a filler without that thereby the required electrical properties under be paced. To improve moisture resistance and the tensile strength of the mixture continues to be a vinyl silane admitted. Alternatively, a silanized kaolin can be used can be used as filler.

Flexible elektrische Leitungen, wie sie beispielsweise als Hochspannungsleitungen für Röntgengeräte benötigt werden und deren Isolierung aus einer gemäß der Erfindung hergestellten Abmischung bestehen, weisen eine hohe Lehnigkeit von größer 650 auf (d. h. ein 60 cm langes Leitungsstück biegt sich durch das eigene Gewicht um einen Winkel größer 65° durch). Die nach VDE 0472 § 603 Prüfart L gemessene statische Flexibili­ tät liegt innerhalb des für solche Leitungen vorgesehenen Be­ reiches. Bei der Prüfung dieser Eigenschaft wird ein Lei­ tungsstück von 3 m Länge mit dem einen Ende an einer Schiene befestigt; das andere Ende wird - von einem Minimalabstand von 20 cm ausgehend - nach außen bewegt, bis sich eine an beiden Leitungsenden senkrecht verlaufende Schlaufe bildet. Der Abstand der beiden senkrecht verlaufenden Schlaufenenden auf der Schiene ist bei erfindungsgemäß isolierten Leitungen kleiner als 55 cm und liegt damit innerhalb des geforderten Bereiches. Flexible electrical lines, such as as High voltage lines are needed for X-ray machines and their isolation from a manufactured according to the invention Mixing exist, have a high leanness of greater 650 on (i.e. a 60 cm length of pipe bends your own weight through an angle greater than 65 °). The Static flexibility measured according to VDE 0472 § 603 test type L. act is within the intended for such lines Be rich. When examining this property, a lei piece of 3 m long with one end on a rail attached; the other end is - from a minimum distance starting from 20 cm - moved outwards until one comes on forms a vertical loop at both ends of the cable. The distance between the two vertical loop ends is on the rail in lines insulated according to the invention smaller than 55 cm and is therefore within the required Area.  

Nachfolgend wird noch ein Ausführungsbeispiel einer gemäß der Erfindung ausgebildeten Isoliermischung angegeben:An exemplary embodiment of a device according to FIG Insulation mixture designed according to the invention:

100 Gew.-Teile EPR,
10 Gew.-Teile PE,
100 Gew.-Teile calciniertes Kaolin,
2 Gew.-Teile Silan,
2-4 Gew.-Teile Peroxid (100%ig).100 parts by weight of EPR,
10 parts by weight of PE,
100 parts by weight of calcined kaolin,
2 parts by weight of silane,
2-4 parts by weight of peroxide (100%).

Eine derartige Mischung hat eine Shore A-Härte von 70 ± 5, weist die für Hochspannungsleitungen, insbesondere Röntgen­ leitungen, geforderten hohen Werte elektrischer Festigkeit auf und ist migrationsfest.Such a mixture has a Shore A hardness of 70 ± 5, has the for high-voltage lines, especially X-ray cables, required high values of electrical strength and is migration-proof.

Claims (2)

1. Vernetzbare, weichmacherfreie Isoliermischung für elektri­ sche Kabel und Leitungen auf der Basis eines Ethylen- Propylen-Kautschuks (EPR) und mit einem kleineren Anteil ei­ nes Polyethylens, dadurch gekennzeichnet, daß die Mischung die folgenden Komponenten enthält:
  • 1) 100 Gewichtsteile eines amorphen Ethylen-Propylen-Co- oder Terpolymerisats (EPM oder EPDM) mit einem Ethylenge­ halt von 55 bis 65%, dessen Mooney-Viskosität < 25 ist,
  • 2) 5 bis 20 Gewichtsteile eines Polyethylens mit einer Dich­ te < 0,92 g/cm³,
  • 3) 50 bis 150 Gewichtsteile eines Füllstoffes in Form eines calcinierten Kaolins und
  • 4) etwa 1 bis 3 Gewichtsteile eines Vinylsilans.
1. Crosslinkable, plasticizer-free insulation mixture for electrical cables and wires based on an ethylene-propylene rubber (EPR) and with a smaller proportion of egg nes polyethylene, characterized in that the mixture contains the following components:
  • 1) 100 parts by weight of an amorphous ethylene-propylene copolymer or terpolymer (EPM or EPDM) with an ethylene content of 55 to 65%, the Mooney viscosity of which is <25,
  • 2) 5 to 20 parts by weight of a polyethylene with a density <0.92 g / cm³,
  • 3) 50 to 150 parts by weight of a filler in the form of a calcined kaolin and
  • 4) about 1 to 3 parts by weight of a vinyl silane.
2. Isoliermischung nach Anspruch 1, dadurch gekennzeichnet, daß die Komponenten 3 und 4 der Mischung durch ein silani­ siertes, calciniertes Kaolin ersetzt sind.2. insulating mixture according to claim 1, characterized, that components 3 and 4 of the mixture through a silani Seated, calcined kaolin are replaced.
DE19641396A 1996-09-27 1996-09-27 Crosslinkable insulation mixture for electrical cables and wires Expired - Fee Related DE19641396B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19641396A DE19641396B4 (en) 1996-09-27 1996-09-27 Crosslinkable insulation mixture for electrical cables and wires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19641396A DE19641396B4 (en) 1996-09-27 1996-09-27 Crosslinkable insulation mixture for electrical cables and wires

Publications (2)

Publication Number Publication Date
DE19641396A1 true DE19641396A1 (en) 1998-04-02
DE19641396B4 DE19641396B4 (en) 2007-08-16

Family

ID=7808127

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19641396A Expired - Fee Related DE19641396B4 (en) 1996-09-27 1996-09-27 Crosslinkable insulation mixture for electrical cables and wires

Country Status (1)

Country Link
DE (1) DE19641396B4 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10004887A1 (en) * 2000-02-04 2001-08-23 Daume Karin Maschinenteile Device for contacting in particular elongated, for example substantially cylindrical bodies, for example pipes or cables
WO2006100465A1 (en) * 2005-03-23 2006-09-28 Imerys Minerals Limited Infrared absorbing polymer compositions and films
EP2117010A1 (en) * 2007-03-06 2009-11-11 Swcc Showa Cable Systems Co., Ltd. Resin composition for insulation, and wire/cable using the same
EP2395516A1 (en) * 2009-02-05 2011-12-14 Swcc Showa Cable Systems Co., Ltd. Cable for high-voltage electronic device
WO2014029447A1 (en) * 2012-08-24 2014-02-27 Abb Research Ltd A high voltage direct current cable product

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1569351B2 (en) * 1964-11-09 1973-10-31 Dart Industries Inc., Los Angeles, Calif. (V.St.A.) Process for the preparation of a mixture of an ethylene propylene Copoly mensates and a linear polyethylene
DE3813200A1 (en) * 1988-04-20 1989-11-02 Kabelmetal Electro Gmbh Thermoplastically processable plastic mixture
CH674277A5 (en) * 1986-09-20 1990-05-15 Kabelmetal Electro Gmbh
EP0249010B1 (en) * 1986-05-17 1993-11-18 Kali Und Salz Aktiengesellschaft Fire-retarding thermoplastic moulding compositions based on polymer blends of polypropylene and magnesium hydroxide

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1569351B2 (en) * 1964-11-09 1973-10-31 Dart Industries Inc., Los Angeles, Calif. (V.St.A.) Process for the preparation of a mixture of an ethylene propylene Copoly mensates and a linear polyethylene
EP0249010B1 (en) * 1986-05-17 1993-11-18 Kali Und Salz Aktiengesellschaft Fire-retarding thermoplastic moulding compositions based on polymer blends of polypropylene and magnesium hydroxide
CH674277A5 (en) * 1986-09-20 1990-05-15 Kabelmetal Electro Gmbh
DE3813200A1 (en) * 1988-04-20 1989-11-02 Kabelmetal Electro Gmbh Thermoplastically processable plastic mixture

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Hoechst-Wachse, Gewinnung, Eigenschaften, Anwendung, Ein Leitfaden für Wachsverwender der Fa. Hoechst AG *
KATZ,Harry A.: Handbook of Fillers for Plastics, Van Nostrand Reinhold Company, New York, 1987, S.143-155 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10004887A1 (en) * 2000-02-04 2001-08-23 Daume Karin Maschinenteile Device for contacting in particular elongated, for example substantially cylindrical bodies, for example pipes or cables
US6534714B2 (en) 2000-02-04 2003-03-18 Karin Daume Maschinenteile, Gmbh & Co. Kg Device for the electrically conducting contacting of an electrically conducting part of an outer surface of a tube, a cable, or the like, in particular a coaxial cable's outer conductor bared in sections
WO2006100465A1 (en) * 2005-03-23 2006-09-28 Imerys Minerals Limited Infrared absorbing polymer compositions and films
EP2117010A1 (en) * 2007-03-06 2009-11-11 Swcc Showa Cable Systems Co., Ltd. Resin composition for insulation, and wire/cable using the same
EP2117010A4 (en) * 2007-03-06 2012-06-27 Swcc Showa Cable Sys Co Ltd Resin composition for insulation, and wire/cable using the same
EP2395516A1 (en) * 2009-02-05 2011-12-14 Swcc Showa Cable Systems Co., Ltd. Cable for high-voltage electronic device
EP2395516A4 (en) * 2009-02-05 2013-06-19 Swcc Showa Cable Sys Co Ltd Cable for high-voltage electronic device
US9214261B2 (en) 2009-02-05 2015-12-15 Swcc Showa Cable Systems Co., Ltd. Cable for high-voltage electronic device
WO2014029447A1 (en) * 2012-08-24 2014-02-27 Abb Research Ltd A high voltage direct current cable product

Also Published As

Publication number Publication date
DE19641396B4 (en) 2007-08-16

Similar Documents

Publication Publication Date Title
DE2021172C3 (en) Electric cable for high and extra high voltage, especially with polyethylene insulation
EP0025091B1 (en) Water-proof high voltage insulation for electric cables and process for its manufacture
DE69826986T2 (en) EXTRUDED SELF-REGULATING CABLES AND THEIR MANUFACTURE
DE19641396A1 (en) Flexible insulation for high voltage electric cable or wire with high and migration resistance
EP0158040B1 (en) Flame-retardant insulation composition for electrical cables and conductors
DE1465485A1 (en) Waterproof cable coupling
DE1947071A1 (en) Electric cables
DE2904955B2 (en) Slidable end termination for shielded power cable cores with sector-shaped core cross-section
DE2118135B2 (en) Conductive polymer mixture
DE3312794A1 (en) Polymer-insulated electrical power cable, in particular high-voltage cable
AT394115B (en) AIR CABLE WITH A SOFT CONTAINING A WAVE GUIDE AND METHOD FOR PRODUCING THE SAME
DE1665329B2 (en) SHIELDED ELECTRIC CABLE
EP1176612A2 (en) Flexible electrical cable for trailing chains
DE3001647A1 (en) RADIATION CROSSLINKED, POLYMERIC, ELECTRICAL INSULATING MATERIAL
EP0298246B1 (en) Track-resistant insulating shaped parts
DE1801077C3 (en) High voltage cables
EP1234855A1 (en) Polymer blend of a fluoropolymer and a sulphur-containing polymer
DE3347196A1 (en) Electrical insulation
DE2362183C3 (en) High voltage cable with plastic insulation
DE965143C (en) Plastic-insulated electrical cable with great mobility, especially television camera cable
EP0259653B1 (en) Plastic insulation comprising a voltage stabilizer
DE2139599C3 (en) Electrical cable, preferably high voltage cable
DE1665330A1 (en) Shielded cable or cable provided with a protective layer
DE2419965A1 (en) High-tension cable comprising synthetic-rubber layers - has internal conductive ethylene/propylene rubber-layer, surrounded by crosslinked polyethylene
DE2242455A1 (en) Polyethylene insulation crosslinked with peroxides - contg zinc oxide and antioxidants for improved stability

Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8127 New person/name/address of the applicant

Owner name: PIRELLI CAVI E SISTEMI S.P.A., MAILAND/MILANO, IT

8128 New person/name/address of the agent

Representative=s name: HOFFMANN * EITLE, 81925 MUENCHEN

8110 Request for examination paragraph 44
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: PRYSMIAN CAVI E SISTEMI ENERGIA S.R.L., MAILAN, IT

R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee

Effective date: 20110401