DE2048310A1 - Flame retardant concentrate for finishing polypropylene - Google Patents

Flame retardant concentrate for finishing polypropylene

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Publication number
DE2048310A1
DE2048310A1 DE19702048310 DE2048310A DE2048310A1 DE 2048310 A1 DE2048310 A1 DE 2048310A1 DE 19702048310 DE19702048310 DE 19702048310 DE 2048310 A DE2048310 A DE 2048310A DE 2048310 A1 DE2048310 A1 DE 2048310A1
Authority
DE
Germany
Prior art keywords
weight
parts
polypropylene
concentrate
flame retardant
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
DE19702048310
Other languages
German (de)
Other versions
DE2048310B2 (en
DE2048310C3 (en
Inventor
Heinz Dr 6700 Ludwigs hafen Hofmann Alfred Dr 6712 Bobenheim Roxheim Walther Hans 5047 Wesseling Muller Tamm
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority claimed from DE19702048310 external-priority patent/DE2048310C3/en
Priority to DE19702048310 priority Critical patent/DE2048310C3/en
Priority to FR7132544A priority patent/FR2109757A5/fr
Priority to BE772578A priority patent/BE772578A/en
Priority to IT5314371A priority patent/IT939485B/en
Priority to JP7595071A priority patent/JPS5421382B1/ja
Priority to GB4549571A priority patent/GB1354714A/en
Publication of DE2048310A1 publication Critical patent/DE2048310A1/en
Publication of DE2048310B2 publication Critical patent/DE2048310B2/en
Publication of DE2048310C3 publication Critical patent/DE2048310C3/en
Application granted granted Critical
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
    • 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
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/02—Halogenated hydrocarbons
    • 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
    • C08K5/05—Alcohols; Metal alcoholates
    • C08K5/053—Polyhydroxylic alcohols
    • 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
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/52—Phosphorus bound to oxygen only
    • C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
    • C08K5/526—Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/10—Homopolymers or copolymers of propene
    • C08J2323/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Fireproofing Substances (AREA)

Description

"~. 204831Ö"~. 204831Ö

Badische Anilin- & Soda-Fabrik AGBadische Anilin- & Soda-Fabrik AG

30.9.1970 O.Z. 27 054 17.11.1970 9/30/1970 OZ 27 054 11/17/1970

Flammschatzmittei-Konzentrat zum Einarbeiten in Polypropylen Flammschatzmittei concentrate for working in polypropylene

HammSchutzmittel-Konzentrate zum Einarbeiten in Polypropylen sind in einer Vielzahl von Varianten bekannt und haben sich in der Praxis mehr oder minder gut bewährt. Typische''Nachteile der bekannten Konzentrate sind z.B., daß sie nur-relativ schwer in das Polypropylen eingearbeitet werden können, daß sie beimHamm protective agent concentrates for incorporation into polypropylene are known in a large number of variants and have proven themselves more or less well in practice. Typical '' disadvantages of the known concentrates are, for example, that they are only relatively heavy can be incorporated into the polypropylene that they at

Einarbeiten in das Polypropylen zu Verfärbungen führen, daß sie das Polypropylen schwerer verarbeitbar machen, daß sie in den Verarbeitungsmaschinen Korrosion verursachen, daß ihre Wirksamkeit zu wünschen übrig läßt, daß sie aus den resultierenden Fertigprodukten ausschwitzen, die Fertigprodukte spröde machen und/oaer die Lichtechtheit der Fertigprodukte stark vermindern.Incorporation into the polypropylene lead to discoloration that they make the polypropylene more difficult to process that they in the Processing machines cause corrosion that their effectiveness leaves something to be desired from the resulting Exuding finished products, which make the finished products brittle and / or which greatly reduce the lightfastness of the finished products.

Der vorliegenden Erfindung lag die Aufgabe zugrunde, ein Flammschutzmittel-Konzentrat aufzuzeigen, das mit den vorerwähnten lachteilen nicht oder in erheblich geringerem Maße belastet ist.The object of the present invention was to provide a flame retardant concentrate to show that the aforementioned drawbacks are not burdened or are burdened to a much lesser extent.

Es wurde gefunden, daß diese Aufgabe gelöst werden kann durch ein Konzentrat, das zusammengesetzt ist aus 7 speziell ausgewählten Substanzen in einer bestimmten quantitativen Zusammensetzung. Bei einigen dieser Substanzen handelt es sich um Individuen, die als solche bereits als Bestandteil von Flammschutzmitteln bekannt geworden sind; - Gegenstand der vorliegenden Erfindung ist demgegenüber jedoch ein Flammschutzmittel-Konzentrat mit einer neuen spezifischen Zusammensetzung.It has been found that this object can be achieved by a concentrate which is composed of 7 specially selected Substances in a certain quantitative composition. Some of these substances are individuals known as such have already become known as a component of flame retardants; - The subject of the present invention is on the other hand but a flame retardant concentrate with a new specific composition.

Dementsprechend isb der Gegenstand der vorliegenden Erfindung ein Flammschutzmittel-Konzentrat zum Einarbeiten in Polypropylen. Das erfindungsgemäße Konzentrag ist dadurch gekennzeichnet, daß es ein inniges Gemisch aus
1) 100 Gewichtsteilen Polyäthylen mit einer Dichte von 0,918 bisAccordingly, the subject matter of the present invention is a flame retardant concentrate for incorporation into polypropylene. The concentrate according to the invention is characterized in that it is an intimate mixture of
1) 100 parts by weight of polyethylene with a density of 0.918 to

0,921 g/cm3 und einem Schmelzindex nach DIU" 53 735 (Mi1I 190/2,16) γόη 1,1 bis 1,8 g/10 min,0.921 g / cm 3 and a melt index according to DIU "53 735 (Mi 1 I 190 / 2.16) γόη 1.1 to 1.8 g / 10 min,

528/70 209815/1616 528/70 209815/1616

O.Z. 27 054O.Z. 27 054

2) 96 bis 111 Gewichtsteilen 1,2,5»6,9,lO-Eexabromcyclpdodecan,2) 96 to 111 parts by weight 1.2.5 »6.9, 10-Eexabromcyclpdodecan,

3) 45 bis 57 Gewichtsteilen Antimontrioxid,3) 45 to 57 parts by weight of antimony trioxide,

4) 14 bis 18 Gewichtsteilen Pentaerythrit,4) 14 to 18 parts by weight of pentaerythritol,

5) 9 bis 12 Gewichtsteilen Trisnonylphenylphosph.it,5) 9 to 12 parts by weight Trisnonylphenylphosph.it,

6) 9 bis 12 Gewichtsteilen 3,5-Di-tert.-butyl-4-hydroxy-ßphenylpropionsäurestearylester und6) 9 to 12 parts by weight of 3,5-di-tert-butyl-4-hydroxy-β-phenylpropionic acid stearyl ester and

7) 7 bis 12 Gewichtsteilen eines Stoffes mit der allgemeinen Formel7) 7 to 12 parts by weight of a substance with the general formula

CECE

GEGE

worin η steht für eine Zahl von 1 bis 3 (bezogen auf das mittlere Molekulargewicht des Stoffes).where η stands for a number from 1 to 3 (based on the mean Molecular weight of the substance).

Zu den einzelnen Komponenten des neuen Brandschutzmittel-Konzentrats ist das Folgende zu sagen: Die Komponenten (1) bis (6) sind handelsübliche Stoffe. Die Komponente (7) ist ebenfalls an sich bekannt; sie kann erhalten werden, z.B. aus p-Diisopropylbenzol durch Polyrekombinationsreaktionen, wie sie in den Arbeiten von Y.V. Korshak und Mitarbeitern in "Polymer Science U.S.S.R.", Band 1 (1960), Seiten 341 bis und Band 3 (1962), Seiten 925 bis 935, beschrieben sind.To the individual components of the new fire protection concentrate the following is to be said: Components (1) to (6) are commercially available substances. The component (7) is also known per se; it can be obtained, for example, from p-diisopropylbenzene by poly recombination reactions such as them in the work of Y.V. Korshak and coworkers in "Polymer Science U.S.S.R.", Volume 1 (1960), pages 341 bis and Volume 3 (1962), pages 925 to 935.

Das Herstellen des Konzentrats kann in einschlägig üblicher Weise erfolgen, z.B. durch inniges Mischen seiner Komponenten mittels eines Mischextruders (zweckmäßige Mischtemperaturen: 120 bis 1800C, zweckmäßige Mischdauer: 3 bis 8 Minuten), wobei man das Konzentrat unmittelbar anschließend in die - meist erwünschte - Form eines Granulats bringen kann.The production of the concentrate may be carried out in the relevant conventional manner, for example by intimate mixing of its components by means of a mixing extruder (appropriate mixing temperatures: 120 to 180 0 C, suitable mixing time: 3 to 8 minutes) to obtain immediately thereafter the concentrate in the - desired mostly - Can bring the form of granules.

209815/1616209815/1616

■--■■ O.Z. 27 054■ - ■■ O.Z. 27 054

3 20Λ83103 20Λ8310

Das Ausrüsten von Polypropylen mit dem neuen Brandschutzmittel-Konzentrat kann ebenfalls in einschlägig üblicher Weise erfolgen. Im allgemeinen wird man Polypropylen-G-ranulat mit der gewünschten Menge an Konzentrat-Granulat gleichmäßig vermischen; dieses Granulat-Gemisch kann dann - sofern in der Weiterverarbeiturigsmaschine eine gute Homogenisierung der Formmasse erfolgt - ohne weiteres in der für ein Polypropylen-Granulat üblichen Weise zu den gewünschten Folgeprodukten weiterverarbeitet werden. Würde in der Weiterverarbeitungsmaschine keine ausreichende Homogenisierung erfolgen, empfiehlt es sich, aus dem Granulat-Gemisch in einem vorgeschalteten, besonderen Arbeitsgang eine homogene Formmasse herzustellen. - Die Menge an Brandschutzmittel-Konzentrat wird zweckmäßigerweise so gewählt, daß auf 100 Gewichtsteile Polypropylen 2 bis 20, vorzugsweise 3 bis ä 10, Gewichtsteile des Konzentrats entfallen.Equipping polypropylene with the new fire retardant concentrate can also be carried out in the relevant customary manner. In general, polypropylene granules will be mixed uniformly with the desired amount of concentrate granules; This granulate mixture can then - if the molding compound is well homogenized in the further processing machine - be further processed into the desired secondary products in the manner customary for a polypropylene granulate. If there would be insufficient homogenization in the further processing machine, it is advisable to produce a homogeneous molding compound from the granulate mixture in an upstream, special operation. - The amount of fire retardant concentrate is expediently chosen such that 2 to 20, preferably 3 to 10, etc., parts by weight for every 100 parts by weight of polypropylene of the concentrate.

Beispielexample

Ein Gemisch ausA mixture of

1) 100 Gewichtsteilen Polyäthylen mit einer Dichte von 0,920 g/ cm5 und einem Schmelzindex nach DIlT 53 735 (MPI 190/2,16) von 1,4 g/10 min,1) 100 parts by weight of polyethylene with a density of 0.920 g / cm 5 and a melt index according to DIlT 53 735 (MPI 190 / 2.16) of 1.4 g / 10 min,

2) 100 Gewichtsteilen 1,2,5,6,9,10-Hexabromcyclododecan,2) 100 parts by weight 1,2,5,6,9,10-hexabromocyclododecane,

3) 54 Gewichtsteilen Antimontrioxid,3) 54 parts by weight of antimony trioxide,

4) 15,5 Gewichtsteilen Pentaerythrit,4) 15.5 parts by weight of pentaerythritol,

5) 11 Gewichtsteilen Irisnonylphenylphosph.it,5) 11 parts by weight of iris nonylphenylphosph.ite,

6) 9 Gewichtsteilen 3,5-Di-tert.-butyl-4-hydroxy-ß-phenylpropionsäurestearylester und6) 9 parts by weight of 3,5-di-tert-butyl-4-hydroxy-β-phenylpropionic acid stearyl ester and

7) 12 Gewichtsteilen eines Stoffes mit der Formel7) 12 parts by weight of a substance with the formula

-4-209815/1616 -4-209815 / 1616

O.ZO.Z

CECE

(wobei der Index 2 bezogen ist auf das mittlere Molekulargewicht des Stoffes),(where the index 2 is based on the average molecular weight of the substance),

wird durch einen Mischextruder geführt (Mischtemperatur: etwa 1550C, Mischdauer: etwa 4 Minuten) und unmittelbar nach dem Extrudieren granuliert.is performed by a mixing extruder (mixing temperature: about 155 0 C, mixing time: approximately 4 minutes) immediately after extrusion and pelletized.

5,5 Gewichtsteile des so erhaltenen Brandschutzmittel-Konzentrats werden mit 100 Gewichtsteilen eines handelsüblichen Polypropylen-Granulats gleichmäßig vermischt. Hierauf wird zunächst bei einer Massetemperatur von 1800C homogenisiert und dann durch Extrusion bei einer Massetemperatur von 1850C ein Rohr hergestellt. In dem so erhaltenen Rohr entwickelt das erfindungsgemäße Konzentrat deutlich bessere Eigenschaften als vergleichbare bekannte Konzentrate.5.5 parts by weight of the fire retardant concentrate obtained in this way are uniformly mixed with 100 parts by weight of commercially available polypropylene granules. This will be first homogenized at a melt temperature of 180 0 C and then produced by extrusion at a melt temperature of 185 0 C a pipe. In the tube obtained in this way, the concentrate according to the invention develops significantly better properties than comparable known concentrates.

-5 --5 -

209815/1616209815/1616

Claims (7)

. - 5 Patentanspruch Flammschutzmittel-Konzentrat zum Einarbeiten in Polypropylen, dadurch gekennzeichnet, daß das Konzentrat ein inniges Gemisch ist aus. - 5 Patent claim Flame retardant concentrate for incorporation into polypropylene, characterized in that the concentrate is an intimate mixture of 1) 100 G-ewieht at eilen Polyäthylen mit einer Dichte von 0,918 bis 0,921 g/cm5 und einem Schmelzindex nach Ulli 53 735 (MFI 190/2,16) von 1,1 bis 1,8 g/10 min,1) 100 g weight at eilen polyethylene with a density of 0.918 to 0.921 g / cm 5 and a melt index according to Ulli 53 735 (MFI 190 / 2.16) of 1.1 to 1.8 g / 10 min, 2) 96 bis 111 Gewichtsteilen 1,2,5,6,9-1O-Hexabromcyclododecan,2) 96 to 111 parts by weight 1,2,5,6,9-10-hexabromocyclododecane, 3) 45 bis 57 Gewichtsteilen Antimontrioxid,3) 45 to 57 parts by weight of antimony trioxide, 4) 14 bis 18 Gewichtsteilen Pentaerythrit,4) 14 to 18 parts by weight of pentaerythritol, 5) 9 bis 12 Gewichts teil en Trisnonylphenylphosph.it,5) 9 to 12 parts by weight Trisnonylphenylphosph.it, 6) 9 bis 12 Gewichtsteilen 3,5-Di-tert.-butyl-4-hydroxy-ß-phenylpropionsäureetearylester und6) 9 to 12 parts by weight of 3,5-di-tert-butyl-4-hydroxy-β-phenylpropionic acid tearyl ester and 7) 7 bis 12 Gewichtateilen eines Stoffes mit der allgemeinen Formel7) 7 to 12 parts by weight of a substance with the general formula GHGH -C-C worin η steht für eine Zahl von 1 bis 3 (bezogen auf das mittlere Molekulargewicht des Stoffes).where η stands for a number from 1 to 3 (based on the average molecular weight of the substance). Badische Anilin- & Soda-Fabrik AGBadische Anilin- & Soda-Fabrik AG 209815/1616209815/1616
DE19702048310 1970-10-01 1970-10-01 Flame retardant concentrate for polypropylene Expired DE2048310C3 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE19702048310 DE2048310C3 (en) 1970-10-01 Flame retardant concentrate for polypropylene
FR7132544A FR2109757A5 (en) 1970-10-01 1971-09-09
BE772578A BE772578A (en) 1970-10-01 1971-09-14 FIRE-RETARDING CONCENTRATE FOR POLYPROPYLENE
IT5314371A IT939485B (en) 1970-10-01 1971-09-28 CONCENTRATE OF FIRE-RETARDANT AGENT FOR THE APPRETTING OF POLYPROPYLENE
JP7595071A JPS5421382B1 (en) 1970-10-01 1971-09-30
GB4549571A GB1354714A (en) 1970-10-01 1971-09-30 Flame-proofing concentrate for polypropylene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702048310 DE2048310C3 (en) 1970-10-01 Flame retardant concentrate for polypropylene

Publications (3)

Publication Number Publication Date
DE2048310A1 true DE2048310A1 (en) 1972-04-06
DE2048310B2 DE2048310B2 (en) 1975-10-23
DE2048310C3 DE2048310C3 (en) 1976-06-24

Family

ID=

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2300114A1 (en) * 1973-01-03 1975-01-16 Basf Ag SELF-EXTINGUISHING STYRENE POLYMERISATE
DE2338711A1 (en) * 1973-07-31 1975-02-13 Basf Ag FIRE PROTECTION CONCENTRATE FOR EQUIPMENT OF POLYPROPYLENE
DE3313485A1 (en) * 1983-04-14 1984-10-18 Zeißig, Ortwin M., 4330 Mülheim Flame-retardant and antistatic polyolefin film
EP0226467A2 (en) * 1985-12-12 1987-06-24 Techlon Fibers Corporation Flame retardant polyolefin material and method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2300114A1 (en) * 1973-01-03 1975-01-16 Basf Ag SELF-EXTINGUISHING STYRENE POLYMERISATE
DE2338711A1 (en) * 1973-07-31 1975-02-13 Basf Ag FIRE PROTECTION CONCENTRATE FOR EQUIPMENT OF POLYPROPYLENE
DE3313485A1 (en) * 1983-04-14 1984-10-18 Zeißig, Ortwin M., 4330 Mülheim Flame-retardant and antistatic polyolefin film
EP0226467A2 (en) * 1985-12-12 1987-06-24 Techlon Fibers Corporation Flame retardant polyolefin material and method
EP0226467A3 (en) * 1985-12-12 1989-09-20 Techlon Fibers Corporation Flame retardant polyolefin material and method

Also Published As

Publication number Publication date
DE2048310B2 (en) 1975-10-23
JPS5421382B1 (en) 1979-07-30
FR2109757A5 (en) 1972-05-26
GB1354714A (en) 1974-06-05
IT939485B (en) 1973-02-10
BE772578A (en) 1972-03-14

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
8330 Complete disclaimer