DE4033116A1 - Fire-resistant polymer materials for high-temp. applications - contain high- or low-pressure polyethylene@, polypropylene@ or polystyrene, with dried water-glass and/or dried lignin and/or zeolite - Google Patents

Fire-resistant polymer materials for high-temp. applications - contain high- or low-pressure polyethylene@, polypropylene@ or polystyrene, with dried water-glass and/or dried lignin and/or zeolite

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Publication number
DE4033116A1
DE4033116A1 DE19904033116 DE4033116A DE4033116A1 DE 4033116 A1 DE4033116 A1 DE 4033116A1 DE 19904033116 DE19904033116 DE 19904033116 DE 4033116 A DE4033116 A DE 4033116A DE 4033116 A1 DE4033116 A1 DE 4033116A1
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Germany
Prior art keywords
temp
dried
polypropylene
polystyrene
pressure polyethylene
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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.)
Withdrawn
Application number
DE19904033116
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German (de)
Inventor
Tchavdar Georgiev Tchoparinov
Mihail Naydenov Maleev
Mitko Gospodinov Marinov
Davidko Velinov Davidkov
Ilija Ivanov Popov
Dimiter Venelinov Popov
Peter Ivanov Sirakov
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INST PRILOSCHNA MINERALOGIA BA
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INST PRILOSCHNA MINERALOGIA BA
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Priority to DE19904033116 priority Critical patent/DE4033116A1/en
Publication of DE4033116A1 publication Critical patent/DE4033116A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
    • 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
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02—Homopolymers or copolymers of hydrocarbons
    • C08L25/04—Homopolymers or copolymers of styrene
    • C08L25/06—Polystyrene
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/0003—Linings or walls
    • F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/02—Polysilicates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L97/00—Compositions of lignin-containing materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/16—Introducing a fluid jet or current into the charge
    • F27D2003/168—Introducing a fluid jet or current into the charge through a lance
    • F27D2003/169—Construction of the lance, e.g. lances for injecting particles

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Polymer materials with high fire resistance (I), contain prim. or sec. thermoplastics and fillers for parts which are used at high temp., e.g. in metallurgical processes. (I) contain 60-97 wt.% high- or low-pressure polyethylene, polypropylene or polystyrene, or a mixt. contg. 0.1-75 wt.% of each component (II), and 3-40 wt.% dried water-glass (III) and/or 1-30 wt.% dried lignin and/or 5-30 wt.% temp.-activated zeolite. (I) are produced, e.g. in the form of tubes, by drying (III) at 100-210 deg.C, grinding to 0.3-1 mm particle size, mixing with polymer (II) and extruding at 90-200 deg C (i.e. at least 10-15 deg C below the drying temp. for III). USE/ADVANTAGE - (I) are useful, e.g. for the prodn. of protecting tubes for probes for the periodic measurement of temp. in steel prodn.. Fire resistant materials can be simply produced and do not required special conditions for storage. (0/0)

Description

Die Erfindung betrifft eine Polymermasse von erhöhter Feuer­ festigkeit. Diese Masse kann im Metallhüttenwesen zur Ferti­ gung von Werkstücken und Anlagen, welche kurze Zeit hoher Temperatur ausgesetzt sind, verwendet werden, z. B. zur Fer­ tigung von Schutzrohren für Sonden zum Messen der Tempera­ tur von Stahl periodisch bei der Stahlerzeugung, wobei die Qualität des Stahls untersucht wird.The invention relates to a polymer mass of increased fire strength. This mass can be used in the metallurgical supply of workpieces and systems that are higher for a short time Exposed to temperature, e.g. B. Fer Protection tubes for probes for measuring the tempera structure of steel periodically in steel production, the Quality of the steel is examined.

Es sind mehrere Verfahren zur Erhöhung der Feuerfestigkeit von Polymeren bekannt wie:There are several methods of increasing fire resistance of polymers known as:

Füllung der Polymeren mit Füllstoffen, welche eine verminderte Brennbar­ keit aufweisen wie z. B. Asbest, Kaolin, Zement usw. Diese Füllung ist aber ungeeignet für Schutzrohre, die im Metall­ hüttenwesen verwendet werden, da in den meisten Fällen diese Füllstoffe die Rolle von eigenartigen Dochten spielen, die zur Verbreitung der Flamme beitragen (Enzyklopädie der Poly­ mere 1974, 3.2, Seite 409).Filling the polymers with fillers, which have a reduced flammability have speed such. B. asbestos, kaolin, cement, etc. This Filling is unsuitable for protective tubes in the metal Metallurgy is used because in most cases this Fillers play the role of peculiar wicks that contribute to the spread of the flame (encyclopedia of poly mere 1974, 3.2, page 409).

Füllen von Polypropylen mit anorganischen Füllstoffen (Calciummetasilikat, Talk, Siliziumdioxid, Glimmer usw. und organischen Verbindungen (Dekabromdiphenyloxid oder Deka­ chlordodekahydromethanbenzocyclooktan) und von modifiziertem Polypropylen mit Maleinsäureanhydrid. Zu dieser Masse können noch Ethylenpropylenkautschuk, Antipyrene, Diantimontrioxid, Antimontrichlorid, Pigmente, antiadhäsiver Schmierstoff, Thermostabilisatoren und andere Zusätze zugegeben werden. Diese Masse wird in trockener Form in einer erhitzten Trommel bei 100°C gemischt, danach im Extruder geschmolzen und zuletzt granuliert. Man erhält ein Material mit erhöhter Dehnungsfe­ stigkeit, Schlagfestigkeit und Feuerfestigkeit (Referativnÿ Jurnal 1985, 13T15Π und 16Π).Filling polypropylene with inorganic fillers (Calcium metasilicate, talc, silicon dioxide, mica etc. and organic compounds (decabromodiphenyl oxide or Deka chlordodekahydromethanbenzocyclooctane) and of modified Polypropylene with maleic anhydride. To this mass still ethylene propylene rubber, antipyrene, diantimony trioxide,  Antimony trichloride, pigments, anti-adhesive lubricant, Thermal stabilizers and other additives are added. This mass is dry in a heated drum mixed at 100 ° C, then melted in the extruder and finally granulated. A material with increased elongation is obtained strength, impact resistance and fire resistance (Referativnÿ Jurnal 1985, 13T15Π and 16Π).

  • - Einführen von Antipyrenen in Polymere: Roter Phosphor, Chlor, Brom, Tetrabromphthalsäure, ihre Derivate und verschie­ dene Derivate von Bromphenol. Bei Anwendung der letzten drei werden im voraus in das Polymer Atome von Chlor, Brom, Phos­ phor, Stickstoff, Bor und einiger Metalle wie Calcium, Barium und Magnesium eingeführt. Dieses Verfahren als auch das vor­ her beschriebene sind sehr schwer zur Massenproduktion geeig­ net, da man einer komplizierten technologischen Ausrüstung be­ darf (Enzyklopädie der Polymere 1974, 3.2, Seite 409).- introduction of antipyrenes into polymers: red phosphorus, Chlorine, bromine, tetrabromophthalic acid, their derivatives and various derivatives of bromophenol. Using the last three In the polymer atoms of chlorine, bromine, phos phor, nitrogen, boron and some metals such as calcium, barium and magnesium introduced. This procedure as well as that before Described here are very difficult to mass produce net, since you have a complex technological equipment may (Encyclopedia of Polymers 1974, 3.2, page 409).
  • - Anstreichen der Kunststoffwerkstücke mit Wasserglas. Es wird eine Oberflächenschicht, welche das Werkstück schützt, erzeugt. Dieses Verfahren ist aber unwirksam, da nach Erhitzen auf höhere Temperaturen ein Ablösen des Oberflächenüberzugs vom Werkstück erfolgt (Enzyklopädie der Polymere 1974, 3.2, Seite 409).- Painting the plastic workpieces with water glass. It becomes a surface layer that protects the workpiece, generated. However, this procedure is ineffective because after heating detachment of the surface coating at higher temperatures from the workpiece (Encyclopedia of Polymers 1974, 3.2, Page 409).

Zur Zeit werden Schutzrohre für Sonden, welche zur Messung der Temperatur des Stahls in Konvertern und Elektroöfen benutzt werden, aus Karton imprägniert mit Wasserglas angefertigt, wo­ bei ihre Erzeugung einer komplizierten technologischen Ausrü­ stung bedarf. Weiterhin werden spezielle Lagerbedingungen für ihre gute Aufbewahrung benötigt wegen der hygroskopischen Ei­ genschaften des Kartons. Ihre Lebensdauer ist also beschränkt.Protective tubes for probes, which are used to measure the Temperature of the steel used in converters and electric furnaces are made of cardboard impregnated with water glass, where in their production of complex technological equipment need. Furthermore, special storage conditions for their good storage needs because of the hygroscopic egg cardboard properties. So their lifespan is limited.

Der Erfindung liegt die Aufgabe zugrunde, eine Polymermasse mit erhöhter Feuerfestigkeit zu entwickeln, insbesondere für die Metallurgie und auf ihrer Basis Schutzrohre bei verein­ fachter Technologie und Ausrüstung mit Hilfe eines hochpro­ duktiven Verfahrens anzufertigen, wobei die Lagerzeit unbe­ grenzt ist.The invention has for its object a polymer mass to develop with increased fire resistance, especially for the metallurgy and on the basis of protective tubes at Verein  specialist technology and equipment with the help of a highly pro ductive process to prepare, the storage time unbe is bordered.

Diese Aufgabe wird wie aus den nachstehenden Ansprüchen er­ sichtlich gelöst durch eine Masse, die primäre und sekundäre thermoplastische Polymere und Füllstoffe enthält, nämlich: Hochdruckpolyethylen oder Niederdruckpolyethylen, Polypropy­ len oder Polystyrol in einer Menge von 60 bis 97 Gew.-% oder ein Gemisch derselben in einer Menge von jeweils 0,1 bis 75 Gew.-% jeder Komponente des Gemisches, sowie getrocknetes Wasserglas in einer Menge von 3 bis 40 Gew.-% und/oder ge­ trocknetes Lignin in einer Menge von 1 bis 30 Gew.-% und/oder temperaturaktiviertes Zeolith in einer Menge von 5 bis 30 Gew.-%.This task is as from the claims below visibly solved by a mass, the primary and secondary contains thermoplastic polymers and fillers, namely: High pressure polyethylene or low pressure polyethylene, polypropy len or polystyrene in an amount of 60 to 97 wt .-% or a mixture thereof in an amount of 0.1 to 75% by weight of each component of the mixture, as well as dried Water glass in an amount of 3 to 40 wt .-% and / or ge dried lignin in an amount of 1 to 30% by weight and / or temperature activated zeolite in an amount of 5 to 30 % By weight.

Das Wasserglas wird im vorhinein bei 100 bis 210°C bis zum festen Rest getrocknet und letzterer wird dann bis zu einer Teilchengröße von 0,3 bis 1 mm gemahlen. Die durch Zusatz des Polymers erhaltene Polymermasse wird nach guter Homogenisie­ rung bei 90 bis 200°C extrudiert und in an sich bekannter Weise zu Kunststoffrohren verarbeitet. Die Temperatur der Extrusion der Rohre soll mindestens um 10 bis 15°C niedriger als die Temperatur bei der Trocknung des Wasserglases sein.The water glass is in advance at 100 to 210 ° C to solid rest dried and the latter is then up to a Particle size from 0.3 to 1 mm ground. By adding the Polymer mass obtained polymer is after good homogenization tion extruded at 90 to 200 ° C and in known per se Way processed into plastic pipes. The temperature of the Extrusion of the pipes should be at least 10 to 15 ° C lower than the temperature when the water glass is drying.

Die Vorteile der erfindungsgemäßen Lösung sind folgende: Es wird eine einfache und hochproduktive Ausrüstung bei der Anfertigung der Rohre eingesetzt. Die Aufbewahrung der Schutz­ rohre im Lager kann bei viel strengeren Aufbewahrungsbedin­ gungen erfolgen im Vergleich zu der Aufbewahrung von Kar­ tonschutzrohren. Während für die Aufbewahrung der Karton­ schutzrohre trockene und leicht lüftbare Lagerhäuser benö­ tigt werden, sind für die Kunststoffrohre nur geschlossene Lagerhäuser notwendig. Die Tauglichkeitsdauer beträgt bei Kartonschutzrohren nur 6 Monate, während sie bei den Poly­ merschutzrohren unbeschränkt ist. Gegebenenfalls können auch sekundäre Polymere verwendet werden. Die vorgeschlagene Tech­ nologie ist ökologisch und naturfreundlich. Eine beispielhafte Ausführung wird in der angeführten Tabelle dargestellt.The advantages of the solution according to the invention are as follows: It will be a simple and highly productive equipment at the Production of the pipes used. Storage of protection Pipes in stock can be stored in much stricter conditions conditions compared to the storage of cards clay pipes. While for the storage of the cardboard thermowells need dry and easily ventilated warehouses are only closed for the plastic pipes Warehouses necessary. The suitability period is at Cardboard protection tubes only 6 months, while the Poly  protection pipes is unlimited. If necessary, too secondary polymers are used. The proposed tech nology is ecological and nature-friendly. An exemplary Execution is shown in the table below.

Tabelle table

ErgebnisseResults

Die erhaltenen Schutzrohre wurden unter Betriebsbedingungen getestet, wobei das Kartonschutzrohr für Sonden zum Messen der Temperatur des Stahls im Konverter konsekutiv durch ein Schutzrohr der gefertigten Rohre, z. B. Ausführung mit Num­ mern von 1 bis 5, ersetzt wird. Mit Ausnahme der Rohre des Beispiels ohne Wasserglas als Füllstoff haben alle anderen Rohre die notwendige Zeit im Konverter durchgehalten, um die Temperatur des Stahls (fast 15 Sek. bei einer Temperatur von 1600°C) zu messen. Bei Herausnahme aus dem Konverter sind die Rohre leicht erweicht und ihre Oberfläche ein bißchen karbo­ nisiert. Sie brennen nicht und sind nicht mit der Eisensonde verklebt. The protective tubes obtained were under operating conditions tested, the cardboard protective tube for probes for measuring the Temperature of the steel in the converter consecutively by one Protective tube of the manufactured pipes, e.g. B. Execution with Num numbers from 1 to 5. With the exception of the pipes of the Everyone else, for example, without water glass as a filler Pipes held the necessary time in the converter to the Steel temperature (almost 15 seconds at a temperature of 1600 ° C). When they are removed from the converter, they are Pipes slightly softened and their surface a bit carbo nized. They do not burn and are not with the iron probe glued.  

Bei dem durchgeführten Vergleich zwischen den Schutzrohren der vier Beispiele, welche die Prüfung bestanden haben, ist hervorzuheben, daß sie keine Differenz in ihren funktionellen Eigenschaften sowie in ihrem Verhalten bei hoher Temperatur aufwiesen mit der einzigen Ausnahme, daß mit Erhöhung des Gehalts an Wasserglas und der Dicke der Rohrwand sich das Er­ weichen verringerte infolge der hohen Temperatur.In the comparison made between the protective tubes of the four examples that passed the exam to emphasize that they have no difference in their functional Properties as well as in their behavior at high temperature with the only exception that with increasing the Content of water glass and the thickness of the pipe wall soft decreased due to the high temperature.

Es sind parallele Messungen der Temperatur des Stahls im Konverter mit der Sonde, die mit einem Schutzrohr aus Karton versehen ist und zur Zeit in Betrieb ist, durchgeführt wor­ den. Es ist festgestellt worden, daß kein Unterschied in der gemessenen Temperatur besteht.There are parallel measurements of the temperature of the steel in the Converter with the probe, with a protective tube made of cardboard is provided and is currently in operation the. It has been found that there is no difference in the measured temperature.

Es sind zusätzliche Prüfungen mit denselben Rohren in Elektro­ öfen durchgeführt worden, und es wurden Temperaturen um 1800°C gemessen.There are additional tests with the same tubes in electrical ovens were carried out, and temperatures were around Measured at 1800 ° C.

Claims (1)

Polymermasse mit erhöhter Feuerfestigkeit für Werkstücke, die bei hoher Temperatur verwendet werden, z. B. im Metall­ hüttenwesen, die primäre oder sekundäre thermoplastische Polymere und Füllstoffe enthält, dadurch gekenn­ zeichnet, daß sie Hochdruckpolyethylen, Nieder­ druckpolyethylen, Polypropylen oder Polystyrol in einer Menge von 60 bis 97 Gew.-% oder ein Gemisch derselben in einer Menge von jeweils 0,1 bis 75 Gew.-% jeder Komponente des Gemisches, sowie getrocknetes Wasserglas in einer Menge von 3 bis 40 Gew.-% und/oder getrocknetes Lignin in einer Menge von 1 bis 30 Gew.-% und/oder temperaturaktiviertes Zeolith in einer Menge von 5 bis 30 Gew.-% enthält.Polymer mass with increased fire resistance for workpieces that are used at high temperature, e.g. B. metallurgy, which contains primary or secondary thermoplastic polymers and fillers, characterized in that they are high-pressure polyethylene, low-pressure polyethylene, polypropylene or polystyrene in an amount of 60 to 97 wt .-% or a mixture thereof in an amount of each 0.1 to 75% by weight of each component of the mixture, and also dried water glass in an amount of 3 to 40% by weight and / or dried lignin in an amount of 1 to 30% by weight and / or temperature-activated zeolite in contains an amount of 5 to 30 wt .-%.
DE19904033116 1990-10-18 1990-10-18 Fire-resistant polymer materials for high-temp. applications - contain high- or low-pressure polyethylene@, polypropylene@ or polystyrene, with dried water-glass and/or dried lignin and/or zeolite Withdrawn DE4033116A1 (en)

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DE19904033116 DE4033116A1 (en) 1990-10-18 1990-10-18 Fire-resistant polymer materials for high-temp. applications - contain high- or low-pressure polyethylene@, polypropylene@ or polystyrene, with dried water-glass and/or dried lignin and/or zeolite

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DE19904033116 DE4033116A1 (en) 1990-10-18 1990-10-18 Fire-resistant polymer materials for high-temp. applications - contain high- or low-pressure polyethylene@, polypropylene@ or polystyrene, with dried water-glass and/or dried lignin and/or zeolite

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0589461A1 (en) * 1992-09-23 1994-03-30 SAVA KRANJ industrija gumijevih, usnjenih in kemicnih, izdelkov n. o. sol. o. Refractory material, process for its preparation and its utilisation

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Publication number Priority date Publication date Assignee Title
DE2420093A1 (en) * 1973-04-25 1974-11-28 Ishikawa Takashi HEAT-RESISTANT AND FIRE-RESISTANT SYNTHETIC RESIN MATERIALS CONTAINING INORGANIC SUBSTANCES AND METHOD FOR MANUFACTURING THE SAME
EP0007608A1 (en) * 1978-08-01 1980-02-06 Degussa Aktiengesellschaft Thermoplastic masterbatch for the manufacture of plastic films with antiblocking properties
EP0094121A1 (en) * 1982-05-07 1983-11-16 ENICHEM POLIMERI S.p.A. Thermoplastic compositions based on non-polar organic polymers and zeolites in acid form, which have strong adhesion to metals, and composite objects obtainable therefrom
DE3502372A1 (en) * 1985-01-25 1986-07-31 Kataflox Patent-Verwaltungsgesellschaft mbH, 7500 Karlsruhe Flameproofing agent for plastics
FR2611732A1 (en) * 1987-03-06 1988-09-09 Tecnocolor Sas Celebrano A C Process for obtaining the biodegradability of disposable products made of plastic

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2420093A1 (en) * 1973-04-25 1974-11-28 Ishikawa Takashi HEAT-RESISTANT AND FIRE-RESISTANT SYNTHETIC RESIN MATERIALS CONTAINING INORGANIC SUBSTANCES AND METHOD FOR MANUFACTURING THE SAME
EP0007608A1 (en) * 1978-08-01 1980-02-06 Degussa Aktiengesellschaft Thermoplastic masterbatch for the manufacture of plastic films with antiblocking properties
EP0094121A1 (en) * 1982-05-07 1983-11-16 ENICHEM POLIMERI S.p.A. Thermoplastic compositions based on non-polar organic polymers and zeolites in acid form, which have strong adhesion to metals, and composite objects obtainable therefrom
DE3502372A1 (en) * 1985-01-25 1986-07-31 Kataflox Patent-Verwaltungsgesellschaft mbH, 7500 Karlsruhe Flameproofing agent for plastics
FR2611732A1 (en) * 1987-03-06 1988-09-09 Tecnocolor Sas Celebrano A C Process for obtaining the biodegradability of disposable products made of plastic

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* Cited by examiner, † Cited by third party
Title
06823Y/04 zu JP 51-144458 *
51454U-A zu SU 364638 *
85-281028/45 zu JP 60-192742 *
86-301618/46 zu JP 61-223-046 *
Derwent-Abstract: 72414T - AEL zu JP 4721464 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0589461A1 (en) * 1992-09-23 1994-03-30 SAVA KRANJ industrija gumijevih, usnjenih in kemicnih, izdelkov n. o. sol. o. Refractory material, process for its preparation and its utilisation

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