WO1999029769A1 - Piece moulee gonflee constituee de plastiques polyolefiniques - Google Patents

Piece moulee gonflee constituee de plastiques polyolefiniques Download PDF

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Publication number
WO1999029769A1
WO1999029769A1 PCT/EP1998/007751 EP9807751W WO9929769A1 WO 1999029769 A1 WO1999029769 A1 WO 1999029769A1 EP 9807751 W EP9807751 W EP 9807751W WO 9929769 A1 WO9929769 A1 WO 9929769A1
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WO
WIPO (PCT)
Prior art keywords
component
components
organic liquid
component according
organic
Prior art date
Application number
PCT/EP1998/007751
Other languages
German (de)
English (en)
Inventor
Johannes Andres
Siegfried Kopannia
Original Assignee
Henkel Kommanditgesellschaft Auf Aktien
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 Henkel Kommanditgesellschaft Auf Aktien filed Critical Henkel Kommanditgesellschaft Auf Aktien
Publication of WO1999029769A1 publication Critical patent/WO1999029769A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/14—Insulating conductors or cables by extrusion
    • 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
    • C08K5/01—Hydrocarbons
    • 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
    • C08L23/10—Homopolymers or copolymers of propene
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
    • 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
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof

Definitions

  • the invention is in the field of plastics processing.
  • a dimensionally stable material based on polyolefin plastics is proposed which, upon contact with organic liquid components or preparations which contain such components, does not swell or does not swell in a disturbing manner. It is further proposed to use this material as a covering for electrical or optical conductors, in particular for optical fibers, which are filled with a cable filling compound based on an organic liquid component.
  • the inner sheathing of such communication cables often consists of polyesters such as polybutylene terephthalate (PBT).
  • PBT offers favorable technical properties for this application.
  • polyesters are generally subject to hydrolytic cleavage and their properties can deteriorate over time.
  • polyolefin plastics are easier to handle and therefore more economical to use.
  • polypropylene in particular is a durable mass plastic with good mechanical properties.
  • Another object of the invention was to find a suitable manufacturing process for sheaths for cables with optical fibers or electrical conductors, which are filled with an organic cable filling compound and at least predominantly consist of polyolefin plastics, in particular polypropylene.
  • the invention thus relates to a dimensionally stable component made of polyolefin plastics in continuous contact with organic liquid components or materials containing such components, characterized in that it contains 1 to 20% by weight of an organic medium which is liquid under the conditions of use of the component as a swelling agent.
  • Another object of the invention is a process for the production of a component made of polypropylene, characterized in that polypropylene and, if desired, customary auxiliaries are introduced in granular form and the desired amount of the organic liquid component or egg preparation which contains such a liquid component is applied to it and thereafter Feed mixture to an extruder and then processed in the usual way to the molded part.
  • the invention is based in general on the observation that organic liquids, such as those used in cable filling compounds, are only taken up by sources of polyolefin plastics, in particular polypropylene, up to a certain saturation limit. Tests have shown that the saturation limit is in the range below 20% by weight, measured in the range of the operating temperature of the component. In its most general embodiment, the invention intends to use this principle and proposes to use such a saturated material which contains 1 to 15% by weight of a liquid, organic medium and does not or do not swell when in contact with this or a similar organic medium changed only marginally.
  • the invention preferably proposes to swell polyolefin plastics and in particular polypropylene with those organic liquid components which are present as liquid substances in cable filling compounds.
  • the invention proposes incorporating the entire cable filling compound into the plastic in such an amount that the proportion of the organic liquid component in the swollen polymer is 1 to 15% by weight.
  • the molded part according to the invention can be manufactured from different types of polyolefins.
  • Polypropylene homopolymers for example atactic, syndiotactic or isotactic isopropylene, are initially suitable according to the invention.
  • Preferred is polypropylene with a certain proportion of isotactic linkages, in particular isotactic polypropylene, which has been produced with the help of Ziegler Natta or magnesium chloride catalysts.
  • copolymers of propylene with other olefins in particular copolymers of propylene with ethylene and / or butene or other olefins with up to 8 C atoms, can also be used.
  • polypropylene with other polyolefins and, if desired, processing aids and the like such as fillers, pigments, lubricants and stabilizers such as antioxidants and light stabilizers, as are customary in polyolefins for use in the cable industry, are also suitable.
  • processing aids and the like such as fillers, pigments, lubricants and stabilizers such as antioxidants and light stabilizers, as are customary in polyolefins for use in the cable industry, are also suitable.
  • thermoplastically processable i. H. they must not be networked to such an extent that melting is no longer possible.
  • a liquid, organic component or a preparation which contains such a component is added to the polyolefin as a swelling agent.
  • a preferred liquid, organic medium in the sense of the invention is mineral oils. Preferred mineral oils are described, for example, in GB 2 100 281 A mentioned at the beginning. For example, liquid mineral oil fractions with a boiling point between 330 and 390 ° C and a density in the range of 0.828 to 0.880 at 20 ° C can be used. Such mineral oils are generally referred to as light oil. Mineral oil fractions with a density of 0.860 to 0.905 at 25 ° C, which are generally referred to as heavy oils, can also be used.
  • oligomerization products of olefins and / or diolefins can also be used as organic liquid products.
  • Liquid products with a low molecular weight for example with a molecular weight of 200 to 3,000, are preferred here.
  • Particularly branched products are suitable as oligomers, for example polyolefins or polydiolefins.
  • Suitable polyolefins are e.g.
  • oligomers from olefins such as octene, nonene, decene and their homologues with up to 20, preferably up to 16 carbon atoms, for example their homopolymers and / or copolymers with a degree of polymerization of 2 to 50, preferably 3 to 20 and especially 3 to 10.
  • star-shaped oligomers of alpha olefins are particularly preferred.
  • An example of an alpha-olefin oligomer can be, for example, an oligomer mixture of three to four molecules of decene 1, optionally after hydrogenation of the remaining double bond.
  • a particularly suitable product contains 34% C30, 43% C40, 20% C50.
  • Low molecular weight polymers of butadiene, isoprene or their copolymers can also be used.
  • Copolymers of the olefins mentioned with styrene can also be used.
  • the prerequisite in all cases is that the preparations are liquid at room temperature.
  • types of polybutadiene modified with terminal hydroxyl groups are suitable.
  • fatty acid derivatives are understood here to mean, on the one hand, very generally esters of fatty acids, and on the other hand also their chemical reaction products, for example fatty alcohols and the liquid or pasty compounds which can be prepared therefrom.
  • Suitable fatty acid derivatives are, for example, triglycerides and in particular castor oil. Pentaerythritol esters and / or trimethyolpropane esters are also suitable.
  • the dimerization products of fatty alcohols of chain length 8 to 18 are suitable as fatty acid derivatives. So-called Guerbet alcohols can be used as dimerization products on the one hand, and the C 36 dimer fatty alcohols which can be prepared from dimer fatty acids on the other hand.
  • organic liquid components are long-chain polyols of other provenance.
  • polyether alcohols for example polyoxyethylene, polyoxypropylene or polytetrahydrofuran, can be used.
  • organic liquid components mentioned can each be used as such. However, it is often preferred to use a mixture, for example a mixture of mineral oil with branched, star-shaped substances, as is described in DE 41 36 617 for a cable filling compound.
  • the organic liquid component such that it is as similar as possible to the liquid which is to be stored in the component afterwards.
  • the components according to the invention made of polypropylene can be manufactured in a simple manner.
  • the starting granulate customary for the processing of polypropylene which in addition to the polymer often contains all the auxiliary substances to be used in bound or admixed form, can be charged with the liquid, organic medium.
  • the liquid component can, if desired, be fed into an extruder under pressure.
  • the point of admixture can be varied within wide limits. It is only necessary to ensure that there is sufficient mixing after the mixing point. With this procedure, it is often preferred not to use the liquid component but a preparation of higher viscosity which contains it, for example a cable filling compound.
  • the polyolefin mixed with the liquid is easy to process. Often the added liquid components also act as release agents and processing aids.
  • the tube is loaded with one or more glass fiber cores and at the same time a cable filling compound is filled in the invention is practiced in such a way that either the organic liquid component on which the cable filling compound is based is added to the polyolefin granules or that this liquid component is added in the amount proposed according to the invention before the end of the extrusion process.
  • the polyolefin components produced according to the invention have proven to be stable in storage in practice. Tensions and twists caused by changes in the length of the polypropylene tube compared to the glass fiber vein due to swelling processes were practically not observed.
  • Polypropylene moldings were stored in a polyalphaolefin (hydrogenated) with a predominant proportion of a mixture of trimers, tetramers and pentamers from decene. After approximately 40 days, the weight of the molded parts asymtotically approached a limit of approximately 115% (approximately 15% weight gain). The swollen moldings were in the presence: a wire filling compound based on the above. Liquid mechanically and chemically stable and no longer changed their linear expansion when stored.

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Organic Insulating Materials (AREA)

Abstract

Un composant indéformable constitué de plastiques polyoléfiniques, qui est en contact permanent avec des constituants liquides organiques ou des matériaux contenant de tels constituants, s'obtient en ajoutant au plastique polyoléfinique, avant le traitement, jusqu'à 20 % en poids d'un constituant liquide organique comme agent gonflant.
PCT/EP1998/007751 1997-12-10 1998-12-01 Piece moulee gonflee constituee de plastiques polyolefiniques WO1999029769A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19754839.3 1997-12-10
DE19754839A DE19754839A1 (de) 1997-12-10 1997-12-10 Gequollenes Formteil aus Polyolefinkunststoffen

Publications (1)

Publication Number Publication Date
WO1999029769A1 true WO1999029769A1 (fr) 1999-06-17

Family

ID=7851416

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/007751 WO1999029769A1 (fr) 1997-12-10 1998-12-01 Piece moulee gonflee constituee de plastiques polyolefiniques

Country Status (2)

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DE (1) DE19754839A1 (fr)
WO (1) WO1999029769A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE653842A (fr) * 1963-10-01 1965-02-01
DE2215591A1 (de) * 1971-04-01 1972-10-12 British Insulated Callenders Verfahren zur Behandlung von Kunststoff, insbesondere in Bandform, und geschichtetes Band oder Kabel
JPH02153952A (ja) * 1988-12-05 1990-06-13 Fujikura Ltd 半導電性樹脂組成物
EP0541007A1 (fr) * 1991-11-07 1993-05-12 Henkel KGaA Charge de remplissage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE653842A (fr) * 1963-10-01 1965-02-01
DE2215591A1 (de) * 1971-04-01 1972-10-12 British Insulated Callenders Verfahren zur Behandlung von Kunststoff, insbesondere in Bandform, und geschichtetes Band oder Kabel
JPH02153952A (ja) * 1988-12-05 1990-06-13 Fujikura Ltd 半導電性樹脂組成物
EP0541007A1 (fr) * 1991-11-07 1993-05-12 Henkel KGaA Charge de remplissage

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 9030, Derwent World Patents Index; AN 90-226933, XP002101065 *
PATENT ABSTRACTS OF JAPAN vol. 014, no. 406 (C - 0754) 4 September 1990 (1990-09-04) *

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Publication number Publication date
DE19754839A1 (de) 1999-06-17

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