US3642531A - Water based fire protective composition applied to electrical cable - Google Patents

Water based fire protective composition applied to electrical cable Download PDF

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Publication number
US3642531A
US3642531A US3642531DA US3642531A US 3642531 A US3642531 A US 3642531A US 3642531D A US3642531D A US 3642531DA US 3642531 A US3642531 A US 3642531A
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United States
Prior art keywords
cable
weight percent
approximately
fibers
dried residue
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Expired - Lifetime
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English (en)
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Roger L Peterson
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Dyna-Therm Corp
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Dyna-Therm Corp
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    • 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
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
    • 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
    • H01B3/448—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 other vinyl compounds
    • 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
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/92—Fire or heat protection feature
    • Y10S428/921—Fire or flameproofing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/294—Coated or with bond, impregnation or core including metal or compound thereof [excluding glass, ceramic and asbestos]
    • Y10T428/2942—Plural coatings
    • Y10T428/2945—Natural rubber in coating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/294—Coated or with bond, impregnation or core including metal or compound thereof [excluding glass, ceramic and asbestos]
    • Y10T428/2942—Plural coatings
    • Y10T428/2947—Synthetic resin or polymer in plural coatings, each of different type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31652—Of asbestos
    • Y10T428/31656—With metal layer

Definitions

  • the composition includes a water based resinous emulsion, a chlorinated hydrocarbon and inorganic noncombustible fibers.
  • the high-chlorine content of polyvinyl chloride (which may have a theoretical hydrochloric acid content of about 56 percent by weight) is freed and combines with the humidity of the air or with water which is used for tire extinguishing to form hydrochloric acid which can penetrate concrete foundations and attack the steel reinforcement.
  • a coating of a fire protective material can be applied to the exterior surface.
  • a formulation which has performed well is a chlorinated rubber composition described in U.S. Pat. No. 2,938,937.
  • Such composition is formulated with a volatile or- -ganic solvent such as toluene or naphtha.
  • organic solvents of course, is not desirable since solvent fumes can be hazardous to applicators of the coating. This is especially undesirable when the cables are in underground vaults.
  • Organic solvents have also been found to cause neoprene and butyl rubber insulation on the cables to swell when a thick coating is applied.
  • a fire protective composition which does not require the use of an organic solvent and which contains as little chlorine content as possible.
  • the composition must also be capable of providing a coating on the cable which is sufficiently flexible to allow handling of the cables without breaking of the coating and to permit access to and removal of individual cables from a cable tray.
  • the composition should also be capable of protecting electrical cables against the hazards of fire after immersion in water for prolonged periods of time. and should not significantly diminish the current car rying capability of the cables. i.e., the coating will not cause significant heat buildup within the coated cables.
  • the present invention thus provides a fire protective composition which, upon application, forms a self-extinguishing fire barrier and does not significantly retain heat within an electrical cable during normal operation.
  • the composition includes a water based resinous emulsion, a chlorinated hydrocarbon, and inorganic noncombustible fibers.
  • a principal object of this invention is thus the provision of a fire protective composition which is highly effective in preventing propagation of flames and spreading ofa fire when applied to combustible substrates
  • Another object of this invention is to provide a fire protective composition which is capable of being formed into a flexiblc film which permits the cable to be handled easily and which may conveniently be removed from the cable.
  • a still further object of this invention is to provide a fire protective composition which does not include an organic sol' VGI'IL
  • Another object of this invention is to provide a tire protective composition which will not cause swelling of insulation on electrical cables nor afl'cct the electrical or physical properties of the cable insulation in any significant manner.
  • the water based resinous emulsion is preferably a thermoplastic such as a polyvinyl acetate emulsion.
  • Water emulsified epoxy resins may also be used.
  • the composition must have sufficicnt emulsion to produce a coherent plastic film or coating when the composition is applied to an electrical cable and also one which adheres well to the surface of the cable insulation but which can be easily removed. Accordingly, at least about 4 weight percent of the emulsion solids will be used, based on the total weight of the composition.
  • the quantity of emulsion solids should not exceed approximately 25 weight percent since a minimum of organic binder, consistent with satisfactory physical properties, is desired to provide a coating which is tough and sulficiently flexible to permit easy handling of the coated cables and which contains as little combustible material as possible.
  • the preferred range of emulsion solids is from about 8 weight percent to about 15 weight percent.
  • the chlorinated hydrocarbon may be chlorinated paraffin, chlorinated naphthalene, chlorinated terphenyl, mixtures of such materials, etc. From about I to about l5 weight percent of the chlorinated hydrocarbon will generally be used, with the preferred range being from about 4 to about 6 weight percent, based on the total weight of the composition.
  • the compodtion includes a plasticizer to provide flexibility for the coating, although with some emulsions, such as elastomeric polyurethanes and rubbers, it may not be necessary to use a plasticizer. If a plasticizer is used, the selection of a particular plasticizer, of course, depends upon the particular emulsion which is used, with suitable plasticizers being those generally used to plastlcize such emulsions. If a polyvinyl acetate emulsion, for example, is used, suitable plasticizers include tris beta chloroethyi phosphate.
  • the quantity of plasticizer will be relatively small, within the range of from about 1 to about 5 weight percent based on the total weight of the composition.
  • the composition also includes inorganic noncombustible fibers such as asbestos or glass.
  • the total quantity of such fibers in the composition is generally within the range of from about 5 to about 50 weight percent.
  • the composition includes inorganic fibers of different lengths, i.e., short fibers of about one thirty-seconds inch or less in length and relatively longer fibers of up to about one-half inch in length. the shorter fibers generally comprising from about 20 to about weight percent of the total weight of the mixture of fibers, and preferably from about $0 to about 70 weight percent.
  • both the long and short fibers are asbestos as it is believed that the asbestos fines or short fibers together with the long fiber: form a tough film, that is a dense interwoven network, which remains about the cable insulation surface after burning.
  • Such structure in combination with the carbonaceous residue of the decomposed binder, is believed to facilitate removal of heat by radiation and at the same time to limit the access of oxygen to the flammable cable surface.
  • the tire protective composition also includes an antimony containing compound.
  • an antimony containing compound such as antimony trioxide.
  • antimony trioxide Generally, about 0.5 to about weight percent, and preferably from about 2 to about 5 weight percent, of the antimony compound will be used.
  • the antimony oxide is believed to function in combination with the chlorinated hydrocarbon during burning by interfering with the normal combustion process, or to limit burning, possibly by reacting with the chlorinated hydrocarbon to form antimony pentachloride. a heavy gas which forms at the boundary of the burning surface and thus prevents oxygen from getting to such surface.
  • the tire protective composition may also include various inert inorganic fillers, such as calcium carbonate or silica or other such stable inorganic materials.
  • the quantity of fillers will normally be kept within the range of approximately 5 to about weight percent, based on the total weight ofthe composition.
  • the composition may also include organic or inorganic pigments such as titanium dioxide, ferric oxide, etc., to provide a desired color. The quantity of such pigment will, of course, be relatively small, generally no more than approximately 4 weight percent.
  • polyvinyl acetate or other resinous emulsion containing at least approximately 50 percent solids in water is mixed with the chlorinated hydrocarbon and plasticizer with stirring at room temperature to form a substantially uniform mixture of the ingredients.
  • the calcium carbonate or other inert filler, pigment, and antimony oxide compounds are added and thoroughly mixed therein, after which the asbestos or other inorganic fibers are added with mixing to provide a substantially uniform mixture.
  • the composition may be applied as a fluid or as a mastic by various methods, including spraying, brushing, trowelling, gunning, etc.
  • the composition will contain the requisite amount of water, slightly greater quantities of water being required if a sprayable composition is to be produced.
  • the composition may also contain minor amounts of various additives to stabilize and protect the emulsion, such as wetting agents, dcfoaming agents. fungicides, etc.
  • the quantity of such ingredients will usually be within the range of from about I to about 5 percent by weight.
  • the coating should be approximately one-eighth inch in thickness. To attain such a coating, the initial thickness should be approximately threc-sixteenths inch when the wet composition is applied as it will shrink approximately percent in drying. If the fire hazard is minimal, the thickness of the coating may be only approximately one-sixteenth inch, and conversely, if a strong fire hazard exists, the coating may be approximately one-fourth inch thick.
  • the composition will usually dry to touch between 1 and 2 hours, and after approximately 4 hours, the cable may be handled or removed. Complete drying requires up to approximately 3 days, and consequently, fire testing should not take place until at least 3 days after application since traces of moisture left on the inside of the coating could expand and loosen adhesion.
  • the resulting coating in one formulation, will comprise the following materials in the indicated approximate percentages:
  • the dried coating will contain, based on the total weight of the coating, from about 6 to about 30 weight percent resin solids from the emulsion, about L5 to about 20 weight percent chlorinated hydrocarbon, about L5 to about 7.5
  • weight percent plasticizer about 7.5 to about 75 weight per cent inorganic fibers, about 5 to about 30 weight percent inorganic fillers, pigments. wetting agents, etc., and about 1 to about 20 weight percent of the antimony compound.
  • FIG. I is a fragmentary perspective view of an electrical cable having a coating of the composition applied thereto; and FIG. 2 is a cross section view taken on line 2-2 of FIG. 1.
  • the numeral 1 denotes generally a piece of electrical cable having a coating 2 of fire protective composition thereabout.
  • the cable core includes a plurality of metal wires 3 having an insulation coating 4 thereon, which may be neoprene rubber, butyl rubber. polyvinyl chloride, cross-linked polyethylene, etc.
  • the coating 2 of fire protective composition surrounds the cable and is adhered to the insulation coating 4.
  • the composition was prepared as above, it was applied by spraying with standard spray coating apparatus to an 8 foot horizontal cable tray containing approximately 20 insulated electrical cables.
  • the coating was applied to one-half of the cable tray, top and bottom, to provide approximately oneeighth inch thickness of coating. The remainder of the cable tray and cables was not coated.
  • the fire protective coating was permitted to dry for 2 days, and the test rig was then positioned in a wind protected area so that wind direction would not influence the results. Burlap bags soaked in transformer oil were then wrapped around the cables and ignited with a propane blow torch. The burning time of the heat source was approximately 6 minutes on the section of the tray which had been coated as described, after which the fire had burned out.
  • the tire did not burn out until the insulation had been totally decomposed and the metal cables charred and badly damaged. in contrast to this, the coated cables, after being permitted to cool, were inspected and found to be substantially unharmed and suitable for further use.
  • Tests have also been performed on electrical cables coated with the fire protective composition of this invention to determine whether the coating affects the current carrying capability of the cable, as determined by the temperature rise in the cable during operation. It has been found that such coating does not reduce significantly the ampacity, the reduction being generally on the order of only between 2 and about 5 percent, which is not suflicient to derate the cables, the temperature of the insulation on the cables increasing only approximately 2 percent with a one-eighth inch thickness coating of the fire protective composition.
  • the fire protective composition of this invention is odorless and nontoxic and has a Shore A hardness ofup to about 85.
  • An unsuported lilo-inch thickness film passes a 1.8 inch mandrel bend per ASTM D l737-62.
  • a lilo-inch film on aluminum is capable of withstanding an impact of at least 24 inches per pound on a Gardener Impact Tester.
  • the fire protective composition of this invention is very effective in preventing the spreading of fire and thus of protecting electrical cables from the destructive efiects of fires.
  • the coating pro vided by such composition is highly flexible and it does not interlere in any way with the normal use of the cables. Additionally, the composition does not cause a significant temperature rise in the cables during operation and has also been found to be stable as a coating over long periods of time.
  • die composition is particularly suitable for use as a coating for electrical cables, it is also quite suitable for use as a fire stop for wall penetrations in which the composition is ap plied to the cavity between electrical cables and walls or ceilings to seal around the cables and thus prevent the fire from being transmitted to other areas of the plant.
  • An electrical cable comprising a metal core, a layer ofinsulation surrounding said core, and a self-extinguishing fire protective coating about said layer of insulation, said coating being the dried residue of an aqueous emulsion and comprising from about 6 to about 30 weight percent of water emulsified resin solids, about 1.5 to about weight percent of a chlorinated hydrocarbon, and about 7.5 to about 75 weight percent oi'inorganic noncombustible fibers.
  • chlorinated hydrocarbon is selected from the group consisting of chlorinated paraffin, chlorinated naplhalene, and chlorinated tcrphenyl.
  • said layer of insulation is selected from the group consisting of neoprene rubber, butyl rubber, polyvinyl chloride, and cross-linked polyethylene.
  • An electrical cable having a self-extinguishing fire protective coating on the exterior surface to protect said cable from the destructive efi'ects of fire and to prevent the propaga' tion of flames, said cable comprising a metal core, a layer of insulation surrounding said core, and said fire protective coating surrounding said layer of insulation, said coating being the dried residue of an aqueous emulsion and comprising from about 6 to about 30 weight percent of water emulsified thermo lastic resin solids, about 1.5 to about 20 weight ercent of a c lorinated hydrocarbon, and about 7.5 to about 5 weight percent of inorganic noncombustible fibers.
  • coated cable of claim 12 in which said dried residue includes approximately l to about 20 weight percent of an antimony containing compound and about 1.5 to about 7.5 weight percent of a plasticizer for said water emulsified resin.
  • coated cable ofclaim 12 in which said dried residue includes about 5 to about 30 weight percent wetting agents and inert materials consisting of inorganic fillers and coloring agents.

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Insulated Conductors (AREA)
  • Paints Or Removers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Fireproofing Substances (AREA)
US3642531D 1969-11-28 1969-11-28 Water based fire protective composition applied to electrical cable Expired - Lifetime US3642531A (en)

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US88081369A 1969-11-28 1969-11-28

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US3642531A true US3642531A (en) 1972-02-15

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US (1) US3642531A (enrdf_load_stackoverflow)
BE (1) BE822294Q (enrdf_load_stackoverflow)
DE (1) DE2039969C3 (enrdf_load_stackoverflow)
GB (1) GB1297710A (enrdf_load_stackoverflow)
MY (1) MY7600113A (enrdf_load_stackoverflow)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4961677A (enrdf_load_stackoverflow) * 1972-10-18 1974-06-14
US4018962A (en) * 1975-04-09 1977-04-19 Pedlow J Watson Arc and fireproofing tape
US4018983A (en) * 1975-04-09 1977-04-19 Pedlow J Watson Electrical arc and fire protective sheath, boot or the like
US4051284A (en) * 1973-05-16 1977-09-27 The Furukawa Electric Company Limited Method for producing heat resistant synthetic resin tubes
US4064359A (en) * 1973-09-24 1977-12-20 Flamemaster Corporation Fire retardant product for use with electrical cables and the like
NL7810304A (nl) * 1977-10-14 1979-04-18 Flamemaster Corp Brandwerende samenstelling, werkwijze voor het bereiden daarvan en met een bekleding uit een dergelijke samen- stelling bedekt voorwerp.
US4191675A (en) * 1976-03-16 1980-03-04 Sumitomo Electric Industries, Ltd. Fire spreading inhibitor composition
US4273821A (en) * 1978-01-27 1981-06-16 Pedlow J Watson Fire protective tape
USRE31428E (en) * 1978-01-27 1983-10-25 Thomas & Betts Corporation Fire protective tape
US4486553A (en) * 1980-03-10 1984-12-04 Odenwald-Chemie Gmbh Fire-retardant composition and method for producing fire-resistant layers
US4548853A (en) * 1984-04-02 1985-10-22 Bryan Henry H Closure for a surface opening having an object passing therethrough and method of forming the closure
US4584214A (en) * 1981-04-22 1986-04-22 Pct Pyrochemtek Ag Fireproof covering
USRE32131E (en) * 1978-01-27 1986-04-29 Thomas & Betts Corporation Fire protective tape
US4798917A (en) * 1985-10-31 1989-01-17 Pct Pyrochemtek Ag Kit for producing fireproof cable ducts
WO1992001742A1 (en) * 1990-07-20 1992-02-06 Davlin Paint Company, Inc. Flame-retardant dome producing occludant coatings
US6182407B1 (en) 1998-12-24 2001-02-06 Johns Manville International, Inc. Gypsum board/intumescent material fire barrier wall
US6238594B1 (en) 1998-11-12 2001-05-29 Passive Fire Protection Partners Intumescent material
US6270915B1 (en) 1999-06-04 2001-08-07 Johns Manville International, Inc. Gypsum board/intumescent material ceiling boards
US20180056897A1 (en) * 2016-08-31 2018-03-01 Autonetworks Technologies, Ltd. Vehicular high-voltage wire and wire harness

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4225649A (en) 1978-09-27 1980-09-30 The Flamemaster Corporation Fire retardant composition and cables coated therewith
DE4142903A1 (de) * 1991-12-24 1993-07-01 Gruenau Gmbh Chem Fab Brandschutzmasse und ihre verwendung
DE19858464A1 (de) * 1998-12-18 2000-06-21 Mitras Ind Holding Gmbh Formkörper aus verstärktem Kunststoff-Recyclat, seine Herstellung und Verwendung

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US2717216A (en) * 1954-07-01 1955-09-06 Gen Electric Flame-retardant insulated conductors, method of making same, and compositions used to prepare the same
GB791803A (en) * 1955-05-09 1958-03-12 Ass Lead Mfg Ltd Improvements in flame-retarding compositions
US2830919A (en) * 1955-07-13 1958-04-15 Rome Cable Corp Insulated conductor coated with polyethylene butyl rubber resin
US2983700A (en) * 1957-01-15 1961-05-09 Westinghouse Electric Corp Resinous composition comprising a polyamide and an organosiloxane resin and conductor coated therewith
US2993019A (en) * 1958-05-21 1961-07-18 Union Carbide Corp Flame retarded polyethylene
GB880198A (en) * 1959-06-15 1961-10-18 Charles Lawrence Blake Plastic containing composition and the process of making the same
US3006787A (en) * 1958-09-12 1961-10-31 Gen Cable Corp Method of improving properties of flame resistant polyethylene and products thereof
US3121067A (en) * 1959-07-29 1964-02-11 Du Pont Flame retardant moldable thermoplastic formulations based upon hydrocarbon resin, chlorinated hydrocarbon resin, and antimony trioxide
US3216960A (en) * 1963-01-23 1965-11-09 Hercules Powder Co Ltd Nonflammable polyolefins containing a halogenated organic additive, a compound of group v-a element, and an organic pyrophosphate
US3219478A (en) * 1962-05-14 1965-11-23 Hooker Chemical Corp Flameproofing of cellulosic material
US3256228A (en) * 1961-05-26 1966-06-14 Du Pont Compositions comprising ethylene/vinyl acetate copolymers and chlorinated waxes or chlorinated biphenyls
US3323944A (en) * 1963-03-01 1967-06-06 Kuhlmann Ets Process and composition for improving the mechanical properties of flameproofed cellulosic textile materials
US3477869A (en) * 1965-12-21 1969-11-11 Monsanto Res Corp Protective coating
US3527722A (en) * 1967-10-30 1970-09-08 Hooker Chemical Corp Fire retardant additive

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2626223A (en) * 1950-06-20 1953-01-20 Westinghouse Electric Corp Synthetic resin and insulated products produced therewith
US2717216A (en) * 1954-07-01 1955-09-06 Gen Electric Flame-retardant insulated conductors, method of making same, and compositions used to prepare the same
GB791803A (en) * 1955-05-09 1958-03-12 Ass Lead Mfg Ltd Improvements in flame-retarding compositions
US2830919A (en) * 1955-07-13 1958-04-15 Rome Cable Corp Insulated conductor coated with polyethylene butyl rubber resin
US2983700A (en) * 1957-01-15 1961-05-09 Westinghouse Electric Corp Resinous composition comprising a polyamide and an organosiloxane resin and conductor coated therewith
US2993019A (en) * 1958-05-21 1961-07-18 Union Carbide Corp Flame retarded polyethylene
US3006787A (en) * 1958-09-12 1961-10-31 Gen Cable Corp Method of improving properties of flame resistant polyethylene and products thereof
GB880198A (en) * 1959-06-15 1961-10-18 Charles Lawrence Blake Plastic containing composition and the process of making the same
US3121067A (en) * 1959-07-29 1964-02-11 Du Pont Flame retardant moldable thermoplastic formulations based upon hydrocarbon resin, chlorinated hydrocarbon resin, and antimony trioxide
US3256228A (en) * 1961-05-26 1966-06-14 Du Pont Compositions comprising ethylene/vinyl acetate copolymers and chlorinated waxes or chlorinated biphenyls
US3219478A (en) * 1962-05-14 1965-11-23 Hooker Chemical Corp Flameproofing of cellulosic material
US3216960A (en) * 1963-01-23 1965-11-09 Hercules Powder Co Ltd Nonflammable polyolefins containing a halogenated organic additive, a compound of group v-a element, and an organic pyrophosphate
US3323944A (en) * 1963-03-01 1967-06-06 Kuhlmann Ets Process and composition for improving the mechanical properties of flameproofed cellulosic textile materials
US3477869A (en) * 1965-12-21 1969-11-11 Monsanto Res Corp Protective coating
US3527722A (en) * 1967-10-30 1970-09-08 Hooker Chemical Corp Fire retardant additive

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4961677A (enrdf_load_stackoverflow) * 1972-10-18 1974-06-14
US4051284A (en) * 1973-05-16 1977-09-27 The Furukawa Electric Company Limited Method for producing heat resistant synthetic resin tubes
US4064359A (en) * 1973-09-24 1977-12-20 Flamemaster Corporation Fire retardant product for use with electrical cables and the like
US4018962A (en) * 1975-04-09 1977-04-19 Pedlow J Watson Arc and fireproofing tape
US4018983A (en) * 1975-04-09 1977-04-19 Pedlow J Watson Electrical arc and fire protective sheath, boot or the like
US4191675A (en) * 1976-03-16 1980-03-04 Sumitomo Electric Industries, Ltd. Fire spreading inhibitor composition
NL7810304A (nl) * 1977-10-14 1979-04-18 Flamemaster Corp Brandwerende samenstelling, werkwijze voor het bereiden daarvan en met een bekleding uit een dergelijke samen- stelling bedekt voorwerp.
USRE32131E (en) * 1978-01-27 1986-04-29 Thomas & Betts Corporation Fire protective tape
US4273821A (en) * 1978-01-27 1981-06-16 Pedlow J Watson Fire protective tape
USRE31428E (en) * 1978-01-27 1983-10-25 Thomas & Betts Corporation Fire protective tape
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Also Published As

Publication number Publication date
GB1297710A (enrdf_load_stackoverflow) 1972-11-29
MY7600113A (en) 1976-12-31
DE2039969B2 (de) 1974-01-17
DE2039969C3 (de) 1974-08-08
DE2039969A1 (de) 1971-11-18
BE822294Q (fr) 1975-03-14

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