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EP0888415A1 - Compositions intumescentes non halogenees - Google Patents

Compositions intumescentes non halogenees

Info

Publication number
EP0888415A1
EP0888415A1 EP98900313A EP98900313A EP0888415A1 EP 0888415 A1 EP0888415 A1 EP 0888415A1 EP 98900313 A EP98900313 A EP 98900313A EP 98900313 A EP98900313 A EP 98900313A EP 0888415 A1 EP0888415 A1 EP 0888415A1
Authority
EP
European Patent Office
Prior art keywords
intumescent
composition according
ingredient
cover
strip
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.)
Withdrawn
Application number
EP98900313A
Other languages
German (de)
English (en)
Inventor
Peter Lawrence Boot
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.)
Reddiplex Ltd
Original Assignee
Reddiplex Ltd
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 Reddiplex Ltd filed Critical Reddiplex Ltd
Publication of EP0888415A1 publication Critical patent/EP0888415A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K21/00—Fireproofing materials
    • C09K21/14—Macromolecular materials

Definitions

  • This invention relates to non-halogenated intumescent compositions and to articles made therefrom.
  • the material When an intumescent material is subjected to heat and/or flame, the material swells to form a foam-like charrable material. Under the continued action of the heat and/or flame, the outer layer sets to a rigid char, isolating the material below the char and preventing further combustion.
  • compositions which include intumescent materials have been found to evolve toxic products of decomposition when subjected to heat and/or flame.
  • the occupants of a building in which there is a burning article made from an intumescent composition may be more at risk of poisoning from inhaling the products of the combustion than of physical injury caused by burns.
  • the present invention provides a non-halogenated intumescent composition, said composition consisting essentially of (a) a carrier ingredient and (b) an intumescent ingredient.
  • the carrier ingredient (a) is a non-halogenated thermoformable plastics material, for example ethylene vinyl acetate copolymer.
  • suitable materials include polyethylene, polypropylene, polystyrene, polyvinyl acetate, polyacrylonitrile, natural rubber, styrene butadiene rubber, acrylonitrile styrene butadiene rubber, ethylene octylene, ethylene propylene rubber and ethylene propylene diene monomer rubber.
  • Thermoformable polyester-, polyamide-, epoxy- and phenolic resins may also be used as the carrier ingredient (a).
  • the intumescent ingredient (b) may be, for example, graphite.
  • Alternative intumescent ingredients include alumino-silicate-based materials such as vermiculite.
  • the intumescent composition may, if desired, contain an effective amount of one or more non-halogenated flame-retardant additives (c).
  • non-halogenated flame-retardant additives include hydrous aluminium oxide, red amorphous phosphorus and other phosphorus compounds, such as ammonium mono-phosphate or an ammonium poly-phosphate.
  • the present invention also provides an article made from a non-halogenated intumescent composition, said composition consisting essentially of a carrier ingredient and an intumescent ingredient, in which the article comprises an elongate strip, wherein said carrier (a) and said intumescent ingredient (b) have been compounded together prior to forming of the strip.
  • Compounding may be carried out, for example, by means of an internal mixer, an open mill or an extruder-compounder.
  • the forming of such an elongate strip may be achieved by any processing method compatible with the intumescent composition.
  • a particularly preferred method is the extrusion of the intumescent composition through a suitably-configured die to form an elongate strip.
  • Such a strip may be used as a fire seal for doors and/or windows.
  • articles according to the present invention might, for example, be made by calendering, coating or vacuum-moulding.
  • the composition must contain a sufficient amount of the intumescent ingredient to provide acceptable protection in a fire situation.
  • the amount of the intumescent ingredient (b) may be, for example, present in the composition in an amount of 5 - 60%, preferably at least 30% and especially at least 39%, by total weight of the composition.
  • a cover-member is provided to at least partly enclose the intumescent strip.
  • the present invention further provides an intumescent article comprising a cover-member which is adapted to at least partly enclose an elongate strip of a non-halogenated intumescent composition.
  • the cover-member may, for example, constitute a housing having an integral cavity to contain the elongate strip.
  • the cover-member may itself constitute a decorative outer surface for the intumescent article or it may have decorative or instructional matter applied thereto.
  • the cover-member may constitute a skin which at least partly encloses the intumescent strip.
  • the cover member may be made of a rigid plastics material or of a flexible plastics material. These plastics materials may also be non- halogenated.
  • the elongate strip preferably has a rectangular cross-section, and the cover member extends round three sides of the strip.
  • Intumescent articles according to the present invention may further be provided with a smoke seal, weatherstrip or similar sealing-member
  • weatherstrip which is attached to the outer surface thereof, for example where the article is to be affixed to the frame of a door - or window - aperture.
  • the weatherstrip may conveniently be attached directly to an outer surface of the intumescent strip, or to an outer surface of the skin, or to an outer surface of the cover-member.
  • Attachment of the weatherstrip may be achieved by fusion-welding, by ultrasonic welding, or by means of a suitable adhesive.
  • an intumescent article comprises an elongate strip of an intumescent material enclosed in a flexible skin and having a weatherstrip (as hereinbefore defined) attached to the outer surface of said skin.
  • Such an article may be made as follows: A strip of non-halogenated intumescent composition and skin are formed by co-extrusion and the extrudate is then cooled to ambient temperature.
  • the strip is of rectangular cross-section, and the skin is extruded to cover three sides of the strip.
  • An elongate portion of the outer surface of the skin and a correspondingly-shaped portion of the outer surface of a weatherstrip are simultaneously heated to a sufficient temperature to tackify the said surfaces.
  • the surfaces are then brought together to form a continuous permanent joint.
  • the article (comprising the intumescent strip with its attached weatherstrip) is then cut into discrete lengths, which may be coiled for convenient storage.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Building Environments (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Fireproofing Substances (AREA)

Abstract

L'invention concerne une composition intumescente non halogénée, comprenant un ingrédient support et un ingrédient intumescent. Cette composition peut être transformée en plusieurs bandes allongées (par exemple par extrusion), destinées à être utilisées en tant que joints étanches au feu. La bande intumescente peut éventuellement être placée à l'intérieur d'une protection, cette protection constituant un boîtier pour ladite bande ou étant incorporée à celle-ci. Un joint étanche à la fumée, un dispositif de calfeutrage, ou similaire, peut être fixé à une surface de la bande ou de la protection.
EP98900313A 1997-01-10 1998-01-08 Compositions intumescentes non halogenees Withdrawn EP0888415A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9700449 1997-01-10
GBGB9700449.3A GB9700449D0 (en) 1997-01-10 1997-01-10 Non-halogenated intumescent compositions
PCT/GB1998/000048 WO1998030654A1 (fr) 1997-01-10 1998-01-08 Compositions intumescentes non halogenees

Publications (1)

Publication Number Publication Date
EP0888415A1 true EP0888415A1 (fr) 1999-01-07

Family

ID=10805796

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98900313A Withdrawn EP0888415A1 (fr) 1997-01-10 1998-01-08 Compositions intumescentes non halogenees

Country Status (4)

Country Link
EP (1) EP0888415A1 (fr)
AU (1) AU5492098A (fr)
GB (1) GB9700449D0 (fr)
WO (1) WO1998030654A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9810529D0 (en) * 1998-05-15 1998-07-15 P F C Surechem Limited Intumescent composition
US6747074B1 (en) 1999-03-26 2004-06-08 3M Innovative Properties Company Intumescent fire sealing composition
GB9926890D0 (en) * 1999-11-12 2000-01-12 P F C Surechem Limited Intumescent composition
GB2356885B (en) * 1999-11-30 2004-05-05 Lorient Polyprod Ltd Smoke and fire seal
AT408759B (de) * 2000-03-07 2002-03-25 Dsm Fine Chem Austria Gmbh Intumeszierende, dreiseitig ummantelte brandschutzstreifen und kombinierte kalt- heissgasdichtungen
CA2351262A1 (fr) * 2001-06-22 2002-12-22 Royal Pipe System Composition pour element coupe-feu moule

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2070114B (en) * 1980-01-31 1984-05-02 Lorient Polyprod Ltd Intumescent sealing strip
DE3306698A1 (de) * 1983-02-25 1984-08-30 Bayer Ag, 5090 Leverkusen Gegebenenfalls geschaeumte intumeszenzmassen und daraus hergestellte formteile
DE3401835A1 (de) * 1984-01-20 1985-07-25 Basf Ag, 6700 Ludwigshafen Halogenfreie, flammgeschuetzte thermoplastische formmasse
GB8611671D0 (en) * 1986-05-13 1986-06-18 Dunlop Ltd Flame-retardent latex foams
EP0315649B1 (fr) * 1986-09-17 1993-03-10 Dixon International Limited Materiau intumescent
ES2052631T3 (es) * 1987-04-24 1994-07-16 Bayer Ag Masa polimera termoplastica, ignifuga exenta de halogeno.
ES2033952T3 (es) * 1987-08-14 1993-04-01 Dr. Wolman Gmbh Masas para la elaboracion de cuerpos moldeados intumescentes y productos semiacabados y su empleo en la proteccion contra incendios en la construccion.
US5262454A (en) * 1990-04-25 1993-11-16 Down Corning Gmbh Flame-resistant polyorganosiloxane compound containing hollow glass balls and intumescent compound
GB2287740B (en) * 1994-03-21 1997-04-02 Environmental Seals Ltd Improvements in and relating to door trims
GB2298159B (en) * 1995-06-02 1999-08-11 Reddiplex Group Plc Method of making an intumescent strip
GB9601964D0 (en) * 1996-01-31 1996-04-03 Dixon International Ltd Seal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9830654A1 *

Also Published As

Publication number Publication date
WO1998030654A1 (fr) 1998-07-16
AU5492098A (en) 1998-08-03
GB9700449D0 (en) 1997-02-26

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