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WO1993024935A1 - Cables telephoniques - Google Patents

Cables telephoniques Download PDF

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Publication number
WO1993024935A1
WO1993024935A1 PCT/US1993/004871 US9304871W WO9324935A1 WO 1993024935 A1 WO1993024935 A1 WO 1993024935A1 US 9304871 W US9304871 W US 9304871W WO 9324935 A1 WO9324935 A1 WO 9324935A1
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WO
WIPO (PCT)
Prior art keywords
methyl
article
butyl
mixture
parts
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.)
Ceased
Application number
PCT/US1993/004871
Other languages
English (en)
Inventor
Michael John Keogh
Geoffrey David Brown
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.)
Union Carbide Chemicals and Plastics Technology LLC
Original Assignee
Union Carbide Chemicals and Plastics Technology LLC
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 Union Carbide Chemicals and Plastics Technology LLC filed Critical Union Carbide Chemicals and Plastics Technology LLC
Publication of WO1993024935A1 publication Critical patent/WO1993024935A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/2806—Protection against damage caused by corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/2813—Protection against damage caused by electrical, chemical or water tree deterioration
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable

Definitions

  • This invention relates to wire and cable and the insulation and jacketing therefor and, more particularly, to telephone cable.
  • a typical telephone cable is constructed of twisted pairs of metal conductors for signal transmission. Each conductor is insulated with a polymeric material. The desired number of transmission pairs is assembled into a circular cable core, which is protected by a cable sheath incorporating metal foil and/or armor in combination with a polymeric jacketing material. The sheathing protects the transmission core against mechanical and, to some extent, environmental damage.
  • a watertight cable is provided by filling the air spaces in the cable interstices with a hydrocarbon cable filler grease. While the cable filler grease extracts a portion of the antioxidants from the insulation, the watertight cable will not exhibit premature oxidative failure as long as the cable maintains its integrity.
  • antioxidants which will resist cable filler grease extraction to the extent necessary to prevent premature oxidative failure and ensure the 30 to 40 year service life desired by industry.
  • An object of this invention is to provide a grease-filled cable construction containing antioxidants, which will resist extraction and be maintained at a satisfactory
  • the article of manufacture comprises, as a first component, a plurality of electrical conductors, each surrounded by one or more layers of a mixture comprising (a) one or more polyolefins and (b) the reaction product(s) of an anhydride of an unsaturated aliphatic diacid and one or more functionalized hindered amines and/or functionalized hindered phenols; and, as a second component, hydrocarbon cable filler grease within the interstices between said surrounded conductors.
  • the article of manufacture comprises first and second components; however, the mixture of the first component contains absorbed hydrocarbon cable filler grease or one or more of the hydrocarbon constituents thereof and, in another embodiment, the article of manufacture is comprised only of the first component wherein the mixture contains hydrocarbon cable filler grease or one or more of the hydrocarbon constituents thereof.
  • the polyolefins used in this invention are generally thermoplastic resins, which are crosslinkable. They can be homopolymers or copolymers produced from two or more comonomers, or a blend of two or more of these polymers, conventionally used in film, sheet, and tubing, and as jacketing and/or insulating materials in wire and cable applications.
  • the monomers useful in the production of these homopolymers and copolymers can have 2 to 20 carbon atoms, and preferably have 2 to 12 carbon atoms.
  • alpha-olefins such as ethylene, propylene, 1-butene, 1-hexene, 4-methyl-1-pentene, and 1-octene
  • unsaturated esters such as vinyl acetate, ethyl acrylate, methyl acrylate, methyl methacrylate, t-butyl acrylate, n-butyl acrylate, n-butyl methacrylate, 2-ethylhexyl acrylate, and other alkyl acrylates
  • diolefins such as 1,4-pentadiene, 1,3-hexadiene, 1,5-hexadiene, 1,4-octadiene, and ethylidene norbornene, commonly the third monomer in a terpolymer
  • other monomers such as styrene, p-methyl styrene, alpha-methyl styrene, p-chloro styrene, vinyl
  • the homopolymers and copolymers referred to can be non-halogenated, or halogenated in a conventional manner, generally with chlorine or bromine.
  • halogenated polymers are polyvinyl chloride, polyvinylidene chloride, and polytetrafluoroethylene.
  • the homopolymers and copolymers of ethylene and propylene are preferred, both in the non-halogenated and halogenated form. Included in this preferred group are terpolymers such as ethylene/propylene/diene monomer rubbers.
  • ethylene polymers are as follows: a high pressure homopolymer of ethylene; a copolymer of ethylene and one or more alpha-olefins having 3 to 12 carbon atoms; a homopolymer or copolymer of ethylene having a hydrolyzable silane grafted to their backbones; a copolymer of ethylene and a hydrolyzable silane; or a copolymer of an alpha-olefin having 2 to 12 carbon atoms and an unsaturated ester having 4 to 20 carbon atoms, e.g., an ethylene/ethyl acrylate or vinyl acetate copolymer; an ethylene/ethyl acrylate or vinyl acetate/hydrolyzable silane terpolymer; and ethylene/ethyl acrylate or vinyl acetate
  • copolymers having a hydrolyzable silane grafted to their
  • polypropylene homopolymers and copolymers of propylene and one or more other alpha-olefins wherein the portion of the copolymer based on propylene is at least about 60 percent by weight based on the weight of the copolymer can be used to provide the polyolefin of the invention.
  • the polypropylene can be prepared by conventional processes such as the process described in United States patent 4,414,132.
  • the alpha-olefins in the copolymer are preferably those having 2 or 4 to 12 carbon atoms.
  • the homopolymer or copolymers can be crosslinked or cured with an organic peroxide, or to make them hydrolyzable, they can be grafted with an alkenyl trialkoxy silane in the presence of an organic peroxide which acts as a free radical generator or catalyst.
  • Useful alkenyl trialkoxy silanes include the vinyl trialkoxy silanes such as vinyl trimethoxy silane, vinyl triethoxy silane, and vinyl triisopropoxy silane.
  • the alkenyl and alkoxy radicals can have 1 to 30 carbon atoms and preferably have 1 to 12 carbon atoms.
  • the hydrolyzable polymers can be moisture cured in the presence of a silanol condensation catalyst such as dibutyl tin dilaurate, dioctyl tin maleate, stannous acetate, stannous octoate, lead naphthenate, zinc octoate, iron 2-ethyl hexoate, and other metal carboxylates.
  • a silanol condensation catalyst such as dibutyl tin dilaurate, dioctyl tin maleate, stannous acetate, stannous octoate, lead naphthenate, zinc octoate, iron 2-ethyl hexoate, and other metal carboxylates.
  • homopolymers and copolymers of propylene wherein propylene is the primary comonomer may be referred to herein as polyethylene and polypropylene, respectively.
  • Anhydrides of unsaturated aliphatic diacids having 4 to 20 carbon atoms, and preferably 4 to 10 carbon atoms, can be used for the reaction with the hindered phenol and/or hindered amine.
  • the reaction product can be formed in two ways. In situ formation can be accomplished by mixing the polyolefin, the anhydride, and the hindered phenol and/or hindered amine together at a temperature in the range of about 100°C to about 260°C. The second method is to first mix the anhydride with the hindered phenol and/or hindered amine at a temperature in the range of about 100°C to about 260°C and then compound the reaction product with the polyolefin.
  • the mole ratio of anhydride to hindered phenol and/or hindered amine can be in the range of about 1 to about 10 moles of anhydride per mole of total hindered phenol and hindered amine and is preferably in the range of about 1 to about 5 moles of anhydride per mole of total hindered phenol and hindered amine.
  • the other components of the insulation mixture can be present in about the following proportions:
  • anhydride shall be considered to include acyclic and cyclic anhydrides and dianhydrides, which can be saturated or unsaturated. Examples are maleic anhydride, itaconic anhydride, nadic anhydride, succinic anhydride, methylsuccinic anhydride, phthalic anhydride, hexahydrophthalic anhydride, 4-methylphthalic anhydride, hexahydro-4-methylphthalic anhydride; methyl-5-norbornene-2,3-dicarboxylic anhydride; 1,2,4-benzene-tricarboxylicanhydride; and 1,2,4,5-benzenetetracarboxylic anhydride (pyromellitic anhydride). Excess anhydride, if present after reaction, can be removed by devolatilization at temperatures in the range of about 200°C to about 250°C using a vacuum, if necessary.
  • reaction product of anhydride and hindered phenol and/or hindered amine can have the following structural formulas: wherein R is:
  • R 4 is hydrogen or methyl
  • R 5 is a direct bond or a diradical having 1 to 4 carbon atoms
  • R 2 and R 3 are independently tert-butyl or tert-amyl
  • a is an integer from 0 to 4.
  • X is 1,2 ethyl; 1,2 propyl; 1,2-cyclohexyl; 4-methyl-1,2 cyclohexyl;
  • M is an alkali metal or an alkaline earth metal and b is 1 or 2.
  • R 4 is hydrogen
  • R 5 is a direct bond
  • a is an integer from 0 to 2.
  • Hydrocarbon cable filler grease is a mixture of hydrocarbon compounds, which is semisolid at use temperatures. It is known industrially as "cable filling compound".
  • a typical requirement of cable filling compounds is that the grease has minimal leakage from the cut end of a cable at a 60 °C or higher temperature rating.
  • Another typical requirement is that the grease resist water leakage through a short length of cut cable when water pressure is applied at one end.
  • cost competitiveness minimal detrimental effect on signal transmission; minimal detrimental effect on the physical characteristics of the polymeric insulation and cable sheathing materials; thermal and oxidative stability; and cable fabrication processability.
  • Cable fabrication can be accomplished by heating the cable filling compound to a temperature of approximately 100°C. This liquefies the filling compound so that it can be pumped into the multiconductor cable core to fully impregnate the interstices and eliminate all air space.
  • thixotropic cable filling compounds using shear induced flow can be processed at reduced temperatures in the same manner.
  • a cross section of a typical finished grease-filled cable transmission core is made up of about 52 percent insulated wire and about 48 percent interstices in terms of the areas of the total cross section. Since the interstices are completely filled with cable filling compound, a filled cable core typically contains about 48 percent by volume of cable filling compound.
  • the cable filling compound or one or more of its hydrocarbon constituents enter the insulation through absorption from the interstices.
  • the insulation absorbs about 3 to about 30 parts by weight of cable filling compound or one or more of its hydrocarbon constituents, in toto, based on 100 parts by weight of polyolefin.
  • a typical absorption is in the range of a total of about 5 to about 25 parts by weight per 100 parts by weight of polyolefin.
  • hydrocarbon cable filler grease examples include petrolatum; petrolatum/polyolefin wax mixtures; oil modified thermoplastic rubber (ETPR or extended thermoplastic rubber); paraffin oil; naphthenic oil; mineral oil; the aforementioned oils thickened with a residual oil, petrolatum, or wax; polyethylene wax; mineral oil/rubber block copolymer mixture; lubricating grease; and various mixtures thereof, all of which meet industrial requirements similar to those typified above.
  • cable filling compounds extract insulation antioxidants and, as noted above, are absorbed into the polymeric insulation. Since each cable filling compound contains several hydrocarbons, both the absorption and the extraction behavior are preferential toward the lower molecular weight hydrocarbon wax and oil constituents. It is found that the insulation composition with its antioxidant not only has to resist extraction, but has to provide sufficient stabilization (i) to mediate against the copper conductor, which is a potential catalyst for insulation oxidative degradation; (ii) to counter the effect of residuals of chemical blowing agents present in cellular and cellular/solid (foam/skin) polymeric foamed insulation; and (iii) to counter the effect of absorbed constituents from the cable filling compound.
  • Functionalized hindered phenols useful in the invention, can be, among others, hydrazides, hydrazones, semicarbazides, oxamides, carbazates, or ami no and amine compounds.
  • hydrazides hydrazones
  • semicarbazides oxamides
  • carbazates or ami no and amine compounds.
  • the preferred hindered phenol is 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionhydrazide.
  • Functionalized hindered amines useful in the invention, can be, among others, piperidines functionalized with amines, hydrazines, hydrazides, carboxamides, oxamides, succinamides, or malonamides.
  • piperidines functionalized with amines hydrazines, hydrazides, carboxamides, oxamides, succinamides, or malonamides.
  • the preferred hindered amine is:
  • the polyolefin can be one polyolefin or a blend of polyolefins.
  • the reaction product can be one or a mixture of reaction products of anhydride and hindered phenol and/or hindered amine.
  • the reaction product can be present in the mixture with free hindered phenol or free hindered amine and can also be used in combination with disulfides, phosphites or other non-phenolic or non-amine antioxidants in molar ratios of about 1:1 to about 1:2 for additional oxidative and thermal stability, but, of course, it must be determined to what extent these latter compounds are extracted by the grease since this could affect the efficacy of the combination.
  • the following conventional additives can be added in conventional amounts if desired: ultraviolet absorbers, antistatic agents, pigments, dyes, fillers, slip agents, fire retardants, stabilizers, crosslinking agents, halogen scavengers, smoke inhibitors, crosslinking boosters, processing aids, e.g., metal carboxylates, lubricants, plasticizers, viscosity control agents, and blowing agents such as azodicarbonamide.
  • the fillers can include, among others, magnesium hydroxide and alumina trihydrate. As noted, other antioxidants and/or metal
  • deactivators can also be used, but for these or any of the other additives, resistance to grease extraction must be considered. 1,2-Bis(3,5-di-tert-butyl-4-hydroxy-hydrocinnamoyl)hydrazine added as an adjunct metal deactivator and antioxidant is desirable.
  • Polyethylene I is a copolymer of ethylene and 1-hexene. The density is 0.946 gram per cubic centimeter and the melt index is 0.9 gram per 10 minutes.
  • Antioxidant A is tetrakis[methylene(3,5-di-tert-butyl-4-hydroxyhydrocinnamate)]methane.
  • Antioxidant B is 1,2-bis(3,5-di-tert-butyl-4-hydroxy-hydrocinnamoyl)hydrazine
  • Antioxidant C is N-(2,2,6,6-tetramethyl-4-piperidinyD-N'aminooxamide
  • Antioxidant D is 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic hydrazide
  • 10 mil polyethylene plaques are prepared for oxidation induction time (OIT) testing.
  • the plaques are prepared from a mixture of polyethylene I and the antioxidants mentioned in Table II.
  • the plaques are prepared from a mixture of polyethylene I and reaction products prepared in situ as in (iii) above, i.e., in example 28, a mixture of polyethylene I, antioxidant D, and maleic anhydride, and in examples 30 and 31, a mixture of polyethylene I, antioxidant C, and 4-methylphthalic anhydride and hexahydro-4-methylphthalic anhydride, respectively.
  • a laboratory procedure simulating the grease filled cable application is used to demonstrate performance.
  • Resin samples incorporating specified antioxidants are prepared as above.
  • the samples are first pelletized and then formed into approximately 10 mil (0.010 inch) thick test plaques using ASTM D-1928 methods as a guideline.
  • Initial oxygen induction time is measured on these test plaques.
  • a supply of hydrocarbon cable filler grease is heated to about 80°C and well mixed to insure uniformity.
  • a supply of 30 millimeter dram vials are then each filled to approximately 25 millimeters with the cable filler grease. These vials are then cooled to room temperature for subsequent use.
  • An oil extended thermoplastic rubber (ETPR) type cable filler grease is the hydrocarbon cable filler grease used in these examples. It is a typical cable filling compound.
  • Each ten mil test plaque is then cut to provide about twenty approximately one-half inch square test specimens.
  • each vial is reheated to about 70°C to allow for the easy insertion of the test specimens.
  • the specimens are inserted into the vial one at a time together with careful wetting of all surfaces with the cable filler grease.
  • the vials are loosely capped and placed in a 70°C circulating air oven.
  • Specimens are removed after 2 and 4 weeks, the surfaces are wiped dry with tissue, and the specimens are tested for OIT. In examples 27, 28, 32, and 33, after 4 weeks, the remaining specimens are removed, wiped dry, and placed in a static air chamber at 90°C. At various intervals, specimens are removed and tested for OIT.
  • OIT testing is accomplished in a differential scanning calorimeter with an OIT test cell.
  • the test conditions are: uncrimped aluminum pan; no screen; heat up to 200°C under nitrogen, followed by a switch to a 50 milliliter flow of oxygen.
  • Oxidation induction time (OIT) is the time interval between the start of oxygen flow and the exothermic
  • OIT is reported in minutes; the greater the number of minutes, the better the OIT.
  • OIT is used as a measure of the oxidative stability of a sample as it proceeds through the cable filler grease exposure and the oxidative aging program. Relative performance in the grease filled cable applications can be predicted by comparing initial sample OIT to OIT values after 70°C cable filler grease exposure and 90°C oxidative aging.
  • Product yield (%) is the percent by weight of actual product based on the theoretical yield.
  • wt. % is the percent by weight of antioxidant based on the weight of polyethylene I.
  • Examples 16 to 27 and 29 are conducted with a mixture of polyethylene I and antioxidant(s), which are not prepared in situ, and oil.
  • Examples 28, 30, and 31 are conducted with a mixture of polyethylene I and antioxidant(s), which are prepared in situ, as in (iii) above, and oil.
  • a mixture of antioxidants C and D in a molar ratio of 1:1 is added to phthalic anhydride in a molar ratio of 1:1 under conditions favorable to produce a mixture of the reaction product of C and anhydride and D and anhydride.
  • the composition of the mixture is controlled by adjusting the C/D stoichiometry.
  • the antioxidants are mixed with polyethylene I in total amount of 0.40 percent by weight based on the weight of the resin 10 mil films are prepared, and the OIT testing procedure is followed as above. The results are as follows: OIT (minutes)
  • a mixture of antioxidants C and D in a molar ratio of 1:1 is added to 1,2,4,5-benzenetetra-carboxylic anhydride in a molar ratio of 1:1 under conditions favorable to produce three different products, C-anhydride-D, C-anhydride-C, and D-anhydride-D.
  • the composition of the mixture is controlled by adjusting the C/D molar ratio.
  • the antioxidants are mixed with polyethylene I in a total amount of 0.40 percent by weight based on the weight of the resin, 10 mil films are prepared, and the OIT testing procedure is followed as above. The results are as follows:

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Organic Insulating Materials (AREA)

Abstract

Articles de production industrielle comprenant (1) une série de conducteurs électriques enveloppés chacun dans une ou plusieurs couches d'un mélange comprenant: (a) une ou plusieurs polyoléfines et (b) le ou les produits de réaction d'un anhydride de diacide aliphatique insaturé et d'une ou plusieurs amines empêchées fonctionnalisées et/ou d'un ou plusieurs phénols empêchés fonctionnalisés; et (2) une graisse hydrocarbure pour le remplissage du câble dans les interstices entre les conducteurs ainsi enveloppés.
PCT/US1993/004871 1992-05-26 1993-05-24 Cables telephoniques Ceased WO1993024935A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US88815792A 1992-05-26 1992-05-26
US888,157 1992-05-26

Publications (1)

Publication Number Publication Date
WO1993024935A1 true WO1993024935A1 (fr) 1993-12-09

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PCT/US1993/004871 Ceased WO1993024935A1 (fr) 1992-05-26 1993-05-24 Cables telephoniques

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WO (1) WO1993024935A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0675506A1 (fr) * 1994-03-30 1995-10-04 Union Carbide Chemicals & Plastics Technology Corporation Câbles téléphoniques
US5766761A (en) * 1996-12-11 1998-06-16 Union Carbide Chemicals & Plastics Technology Corporation Telephone cables
WO1998032321A1 (fr) * 1997-01-24 1998-07-30 Union Carbide Chemicals & Plastics Technology Corporation Cables telephoniques
WO2000058975A1 (fr) * 1999-03-25 2000-10-05 Ciba Specialty Chemicals Holding Inc. Composition stabilisee d'isolement de cables de telecommunications
RU2373245C1 (ru) * 2008-04-09 2009-11-20 Открытое акционерное общество "Научно-производственная фирма "Спектр ЛК" (ОАО "НПФ "Спектр ЛК") Уралкидное пленкообразующее
CN108484434A (zh) * 2018-03-15 2018-09-04 江苏极易新材料有限公司 抗氧化剂1024的合成工艺

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2070723A1 (fr) * 1969-11-28 1971-09-17 Nitto Electric Ind Co
FR2188264A1 (fr) * 1972-06-07 1974-01-18 Pirelli
EP0057994A2 (fr) * 1981-01-19 1982-08-18 The Dow Chemical Company Stratifié plastique-métal; feuille pour blinder et armer des câbles et câbles éléctriques fabriqués avec de telles feuilles
FR2511382A1 (fr) * 1981-08-14 1983-02-18 Ciba Geigy Ag Derives polymeres et oligomeres de l'acide malonique, procede pour leur production et polymeres organiques stabilises par de tels agents de protection a l'egard de la lumiere
EP0214099A2 (fr) * 1985-08-28 1987-03-11 Ciba-Geigy Ag Stabilisation de polymères d'éthylène réticulés
FR2602780A1 (fr) * 1986-08-14 1988-02-19 Vector Cables Sa Composition amelioree a base de polymethyl-pentene

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2070723A1 (fr) * 1969-11-28 1971-09-17 Nitto Electric Ind Co
FR2188264A1 (fr) * 1972-06-07 1974-01-18 Pirelli
EP0057994A2 (fr) * 1981-01-19 1982-08-18 The Dow Chemical Company Stratifié plastique-métal; feuille pour blinder et armer des câbles et câbles éléctriques fabriqués avec de telles feuilles
FR2511382A1 (fr) * 1981-08-14 1983-02-18 Ciba Geigy Ag Derives polymeres et oligomeres de l'acide malonique, procede pour leur production et polymeres organiques stabilises par de tels agents de protection a l'egard de la lumiere
EP0214099A2 (fr) * 1985-08-28 1987-03-11 Ciba-Geigy Ag Stabilisation de polymères d'éthylène réticulés
FR2602780A1 (fr) * 1986-08-14 1988-02-19 Vector Cables Sa Composition amelioree a base de polymethyl-pentene

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0675506A1 (fr) * 1994-03-30 1995-10-04 Union Carbide Chemicals & Plastics Technology Corporation Câbles téléphoniques
US5766761A (en) * 1996-12-11 1998-06-16 Union Carbide Chemicals & Plastics Technology Corporation Telephone cables
WO1998032321A1 (fr) * 1997-01-24 1998-07-30 Union Carbide Chemicals & Plastics Technology Corporation Cables telephoniques
WO2000058975A1 (fr) * 1999-03-25 2000-10-05 Ciba Specialty Chemicals Holding Inc. Composition stabilisee d'isolement de cables de telecommunications
US6228495B1 (en) 1999-03-25 2001-05-08 Ciba Specialty Chemicals Corporation Stabilized telecommunication cable insulation composition
AU752917B2 (en) * 1999-03-25 2002-10-03 Ciba Specialty Chemicals Holding Inc. Stabilized telecommunication cable insulation composition
RU2373245C1 (ru) * 2008-04-09 2009-11-20 Открытое акционерное общество "Научно-производственная фирма "Спектр ЛК" (ОАО "НПФ "Спектр ЛК") Уралкидное пленкообразующее
CN108484434A (zh) * 2018-03-15 2018-09-04 江苏极易新材料有限公司 抗氧化剂1024的合成工艺
CN108484434B (zh) * 2018-03-15 2019-03-26 江苏极易新材料有限公司 抗氧化剂1024的合成工艺

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Publication number Publication date
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