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EP2260066A1 - Flame-retardant, reduced-weight elastic flexible polyurethane foam - Google Patents

Flame-retardant, reduced-weight elastic flexible polyurethane foam

Info

Publication number
EP2260066A1
EP2260066A1 EP09728606A EP09728606A EP2260066A1 EP 2260066 A1 EP2260066 A1 EP 2260066A1 EP 09728606 A EP09728606 A EP 09728606A EP 09728606 A EP09728606 A EP 09728606A EP 2260066 A1 EP2260066 A1 EP 2260066A1
Authority
EP
European Patent Office
Prior art keywords
polyol
weight
flexible polyurethane
polyurethane foam
parts
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Withdrawn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
EP09728606A
Other languages
German (de)
French (fr)
Inventor
Ulrich Heitmann
Andreas Bauer
David KÜHNEMANN
Manfred Hohenhorst
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.)
Metzeler Schaum GmbH
Original Assignee
Metzeler Schaum GmbH
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 Metzeler Schaum GmbH filed Critical Metzeler Schaum GmbH
Publication of EP2260066A1 publication Critical patent/EP2260066A1/en
Withdrawn legal-status Critical Current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
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4804—Two or more polyethers of different physical or chemical nature
    • C08G18/4808—Mixtures of two or more polyetherdiols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4833—Polyethers containing oxyethylene units
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4833—Polyethers containing oxyethylene units
    • C08G18/4837—Polyethers containing oxyethylene units and other oxyalkylene units
    • C08G18/485—Polyethers containing oxyethylene units and other oxyalkylene units containing mixed oxyethylene-oxypropylene or oxyethylene-higher oxyalkylene end groups
    • 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
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • 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
    • C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0008—Foam properties flexible
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0041—Foam properties having specified density
    • C08G2110/005—< 50kg/m3
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0083—Foam properties prepared using water as the sole blowing agent

Definitions

  • the invention relates to a flame-retardant, flexible polyurethane flexible foam which is produced from a foam reaction mixture which comprises a polyol mixture, polyisocyanate, expandable graphite as flame retardant and additives.
  • Such a flexible polyurethane foam is known from DE 39 09 017 C1 of the Applicant.
  • a polyol mixture consisting of polyether polyol and polymer-filled polyol is used.
  • the flame retardant used is expanded graphite in platelet form, in which the platelets have the same order of magnitude as the resulting foam cell walls and are first mixed into the reaction component polyol.
  • Such flame-retardant polyurethane flexible foams are used in particular as seat cushions for aircraft or rail vehicles.
  • the foam In addition to high demands on the fire behavior, the foam must also have high long-term use properties. To meet these requirements, the known foam has a relatively high density, which leads to an increased energy consumption.
  • the present invention seeks to propose a flame-retardant, flexible polyurethane flexible foam, which has a reduced weight while maintaining or increasing the life.
  • a flexible polyurethane foam of the type mentioned that the polyol mixture has 50% to 90% by weight based on ethylene oxide based polyol (EO polyol) and 50% to 10% of standard polyol and / or filler polyol ,
  • the flexible polyurethane foam according to the invention has very good long-term use properties at low density. Compared with conventional flexible polyurethane foams, the weight can be reduced by about 30%. This is particularly advantageous when using the flexible polyurethane foam as a seat cushion for aircraft, as this can be the aircraft weight and thus the fuel consumption can be reduced.
  • the weight fraction of the ethylene oxide-based polyol is 80% and the weight fraction of the standard polyol and / or filler polyol is 20%.
  • the polyisocyanate portion is used with an amount of isocyanate corresponding to a ratio of 90 to 105.
  • a diisocyanate is used.
  • the proportion of expandable graphite is 50 to 40 parts by weight, in particular 30 parts by weight, based on 100 parts by weight of polyol.
  • the expandable graphite flame retardant is advantageously present with a grain size of 0.2 to 1 mm.
  • the expandable graphite flame retardant is in platelet form.
  • the additives contain in particular water, a catalyst and a stabilizer.
  • the foam reaction mixture has:
  • the density of the flexible polyurethane foam is advantageousously, the density of the flexible polyurethane foam
  • Table I shows a comparison between the novel flexible polyurethane foam according to the invention and a comparison foam according to the prior art.
  • Polyol 2 EO polyol e.g. Bayfit 41WB01
  • Stabilizer 1 Tegostab 4900 (Evonik)
  • the polyurethane flexible foam according to the invention has the composition shown in the left-hand column. It can be seen that the polyol mixture consists of a standard polyol (polyol 1) and an ethylene oxide based polyol (polyol 2). In contrast, in the comparative foam is a polyol mixture consisting of a standard polyol (polyol 1) and another standard polyol (polyol 3) is used, as can be seen from the right column of Table I. The catalysts and stabilizers used are the same for both foams.
  • a diisocyanate is used with an amount of isocyanate corresponding to a ratio of 90 to 105.
  • Table II shows the physical properties of the new foam and two comparative foams of different density.
  • the flexible polyurethane foam according to the invention has a density of 40 kg / m 3 .
  • the physical values such as compression set according to DIN EN ISO 1856, wet compression set according to DIN EN ISO 1856 and fatigue test according to DIN EN ISO 3385 are shown in column 1. As can be seen from the comparison with column 2, the known comparative foam with an identical density of 40 kg / m 3 has much poorer physical properties.
  • the comparative foam must have a density of 65 kg / m 3 , as shown in column 3.
  • the polyurethane flexible foam of the invention has the same physical properties by about 30% reduced weight.
  • the reduced volume weight results in particular when using the foam as upholstery for aircraft and rail vehicles advantages because the energy consumption can be reduced.
  • the foam according to the invention can also be used for mattresses which are used in security areas such as prisons.
  • the foam is produced by the process described in DE 39 09 017 C1.

Landscapes

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

Abstract

Flame-retardant, elastic flexible polyurethane foam produced from a foam reaction mixture, comprising a polyol mixture, a polyisocyanate, an expandable graphite as flame retardant, and additives. In order to reduce density while retaining long-term service properties, the polyol mixture comprises, in terms of parts by weight, from 50% to 90% of EO-based polyol, and from 50 to 10 parts by weight of standard polyol and/or filler polyol.

Description

Flammwidriger, elastischer Polyurethan-Weichschaumstoff mit reduziertem Gewicht Flame retardant, elastic polyurethane flexible foam with reduced weight
Die Erfindung betrifft einen flammwidrigen, elastischen Polyurethan- Weichschaumstoff, der aus einem Schaumstoff-Reaktionsgemisch hergestellt ist, das ein Polyolgemisch, Polyisocyanat, Blähgraphit als Flamm- schutzmittel und Zusatzstoffe aufweist.The invention relates to a flame-retardant, flexible polyurethane flexible foam which is produced from a foam reaction mixture which comprises a polyol mixture, polyisocyanate, expandable graphite as flame retardant and additives.
Ein derartiger Polyurethan-Weichschaumstoff ist aus der DE 39 09 017 C1 der Anmelderin bekannt. Bei dem verwendeten Schaumstoff- Reaktionsgemisch kommt ein Polyolgemisch bestehend aus Polyetherpolyol und polymergefüllten Polyol zum Einsatz. Als Flammschutzmittel findet Bläh- graphit in Plättchenform Verwendung, bei dem die Plättchen die Größenordnung der entstehenden Schaumstoff-Zellwände aufweisen und zunächst der Reaktionskomponente Polyol zugemischt werden. Derartige flammwidrige Polyurethan-Weichschaumstoffe kommen insbesondere als Sitzpolster für Flugzeuge oder Schienenfahrzeuge zum Einsatz. Neben hohen Anforderun- gen an das Brandverhalten muss der Schaumstoff auch hohe Dauergebrauchseigenschaften aufweisen. Um diese Anforderungen zu erfüllen, weist der bekannte Schaumstoff ein relatives hohes Raumgewicht auf, was zu einem erhöhten Energieverbrauch führt.Such a flexible polyurethane foam is known from DE 39 09 017 C1 of the Applicant. In the foam reaction mixture used, a polyol mixture consisting of polyether polyol and polymer-filled polyol is used. The flame retardant used is expanded graphite in platelet form, in which the platelets have the same order of magnitude as the resulting foam cell walls and are first mixed into the reaction component polyol. Such flame-retardant polyurethane flexible foams are used in particular as seat cushions for aircraft or rail vehicles. In addition to high demands on the fire behavior, the foam must also have high long-term use properties. To meet these requirements, the known foam has a relatively high density, which leads to an increased energy consumption.
Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, einen flammwidrigen, elastischen Polyurethan-Weichschaumstoff vorzuschlagen, der unter Beibehalt oder Erhöhung der Lebensdauer ein reduziertes Gewicht aufweist. Zur Lösung dieser Aufgabe wird bei einem Polyurethan-Weichschaumstoff der eingangs genannten Art vorgeschlagen, dass das Polyolgemisch 50% bis 90% Gewichtsanteile auf Ethylenoxid basierendes Polyol (EO-Polyol) und 50% bis 10 % Standard-Polyol und/oder Füllstoff-Polyol aufweist.Proceeding from this, the present invention seeks to propose a flame-retardant, flexible polyurethane flexible foam, which has a reduced weight while maintaining or increasing the life. To solve this problem is proposed in a flexible polyurethane foam of the type mentioned that the polyol mixture has 50% to 90% by weight based on ethylene oxide based polyol (EO polyol) and 50% to 10% of standard polyol and / or filler polyol ,
Der erfindungsgemäße Polyurethan-Weichschaumstoff weist bei niedrigem Raumgewicht sehr gute Dauergebrauchseigenschaften auf. Gegenüber herkömmlichen Polyurethan-Weichschaumstoffen kann das Gewicht um etwa 30 % reduziert werden. Dies ist insbesondere bei der Verwendung des Polyurethan-Weichschaumstoffes als Sitzpolster für Flugzeuge von Vorteil, da hierdurch das Flugzeuggewicht und somit der Kraftstoffverbrauch reduziert werden kann.The flexible polyurethane foam according to the invention has very good long-term use properties at low density. Compared with conventional flexible polyurethane foams, the weight can be reduced by about 30%. This is particularly advantageous when using the flexible polyurethane foam as a seat cushion for aircraft, as this can be the aircraft weight and thus the fuel consumption can be reduced.
Vorteilhafte Ausgestaltungen der Erfindung gehen aus den Unteransprüchen hervor.Advantageous embodiments of the invention will become apparent from the dependent claims.
Vorteilhaft beträgt der Gewichtsanteil des auf Ethylenoxid basierenden Polyol 80 % und der Gewichtsanteil des Standard-Polyol und/oder Füllstoff-Polyol 20 %.Advantageously, the weight fraction of the ethylene oxide-based polyol is 80% and the weight fraction of the standard polyol and / or filler polyol is 20%.
Der Polyisocyanat-Anteil wird mit einer Isocyanatmenge entsprechend einer Kennzahl von 90 bis 105 eingesetzt. Vorteilhaft kommt ein Diisocyanat zum Einsatz.The polyisocyanate portion is used with an amount of isocyanate corresponding to a ratio of 90 to 105. Advantageously, a diisocyanate is used.
Vorteilhaft beträgt der Blähgraphit-Anteil 50 bis 40 Gewichtsteile, insbesondere 30 Gewichtsteile, bezogen auf 100 Gewichtsteile Polyol.Advantageously, the proportion of expandable graphite is 50 to 40 parts by weight, in particular 30 parts by weight, based on 100 parts by weight of polyol.
Das Blähgraphit-Flammschutzmittel liegt vorteilhaft mit einer Korngröße von 0.2 bis 1 mm vor.The expandable graphite flame retardant is advantageously present with a grain size of 0.2 to 1 mm.
Vorteilhaft liegt das Blähgraphit-Flammschutzmittel in Plättchenform vor. In vorteilhafter Ausgestaltung wird vorgeschlagen, dass als weiteres Flamm- schutzmittel Chorphosphorsäureester mit 5 bis 15 Gewichtsteilen, insbesondere 10, bezogen auf 100 Gewichtsteile Polyol vorliegt.Advantageously, the expandable graphite flame retardant is in platelet form. In an advantageous embodiment, it is proposed that, as further flameproofing agent, there are present chorophosphoric acid esters with 5 to 15 parts by weight, in particular 10, based on 100 parts by weight of polyol.
Die Zusatzstoffe enthalten insbesondere Wasser, einen Katalysator und einen Stabilisator.The additives contain in particular water, a catalyst and a stabilizer.
Bei einer vorteilhaften Ausführungsform weist das Schaumstoff- Reaktionsgemisch auf:In an advantageous embodiment, the foam reaction mixture has:
a) ein Polyolgemisch mit 80 % Gewichtsanteilen auf Ethylenoxid basierendes Polyol und 20 Gewichtsanteilen Standard-Polyol,a) a polyol mixture with 80% by weight of ethylene oxide-based polyol and 20 parts by weight of standard polyol,
b) eine Isocyanatmenge entsprechend einer Kennzahl von 90 bis 105;b) an amount of isocyanate corresponding to a ratio of 90 to 105;
c) 30 Gewichtsteile Blähgraphit-Flammschutzmittel bezogen sowie 10 Gewichtsteile Chlorphosphorsäureester bezogen auf 100 Gewichtsteile Polyol.c) 30 parts by weight of expandable graphite flame retardant and 10 parts by weight of chlorophosphoric acid ester based on 100 parts by weight of polyol.
Vorteilhaft beträgt das Raumgewicht des Polyurethan-WeichschaumstoffesAdvantageously, the density of the flexible polyurethane foam
20 bis 50 kg/m3.20 to 50 kg / m 3 .
Nachfolgend wird die Erfindung anhand eines Ausführungsbeispieles näher erläutert.The invention will be explained in more detail with reference to an embodiment.
Tabelle I zeigt eine Gegenüberstellung zwischen dem erfindungsgemäßen neuen Polyurethan-Weichschaumstoff und einem Vergleichsschaumstoff gemäß dem Stand der Technik. Tabelle ITable I shows a comparison between the novel flexible polyurethane foam according to the invention and a comparison foam according to the prior art. Table I
Neuer Schaumstoff VergleichsschaumstoffNew foam comparison foam
(Stand der Technik)(State of the art)
Polyol 1 20 80Polyol 1 20 80
Polyol 2 80Polyol 2 80
Polyol 3 20Polyol 3 20
Wasser 6 6Water 6 6
Katalysatori 0,6 1 ,5Katalysatori 0.6 1, 5
Katalysator2 0,2 0,3Catalyst2 0.2 0.3
Katalysator3 0,3Catalyst3 0.3
Stabilisator 1 1Stabilizer 1 1
Stabilisator 2 2,3Stabilizer 2 2,3
Blähgraphit 30 30Expanded graphite 30 30
Flammschutzmittel 10 10Flame retardant 10 10
Isocyanat 95 95Isocyanate 95 95
Polyol 1 Standard Polyol z.B Bayfit 10WF 18Polyol 1 standard polyol for example Bayfit 10WF 18
Polyol 2 EO Polyol z.B. Bayfit 41WB01Polyol 2 EO polyol e.g. Bayfit 41WB01
Polyol 3 Standard Polyol Bayfit 7619Polyol 3 standard polyol Bayfit 7619
Katalysator 1 DiethanolaminCatalyst 1 diethanolamine
Katalysator 2 Bis-2-DimethylaminoethanolCatalyst 2 Bis-2-dimethylaminoethanol
Katalysator 3 ThethylendiaminCatalyst 3 thethylenediamine
Stabilisator 1 Tegostab 4900 (Fa. Evonik)Stabilizer 1 Tegostab 4900 (Evonik)
Stabilisator 2 Tegostab B4690 (Fa. Evonik)Stabilizer 2 Tegostab B4690 (Evonik)
Isocyanat Desmodur 3230 (Fa. Bayer)Isocyanate Desmodur 3230 (Bayer)
Der erfindungsgemäße Polyurethan-Weichschaumstoff weist die aus der linken Spalte ersichtliche Zusammensetzung auf. Hieraus ist ersichtlich, dass das Polyol-Gemisch aus einem Standard-Polyol (Polyol 1 ) und einem auf Ethylenoxid basierenden Polyol (Polyol 2) besteht. Demgegenüber kommt bei dem Vergleichssschaumstoff ein Polyolgemisch bestehend aus einem Standard-Polyol (Polyol 1 ) und einem weiteren Standard-Polyol (Polyol 3) zum Einsatz, wie aus der rechten Spalte der Tabelle I ersichtlich ist. Die zum Einsatz kommenden Katalysatoren und Stabilisatoren sind bei beiden Schaumstoffen gleich.The polyurethane flexible foam according to the invention has the composition shown in the left-hand column. It can be seen that the polyol mixture consists of a standard polyol (polyol 1) and an ethylene oxide based polyol (polyol 2). In contrast, in the comparative foam is a polyol mixture consisting of a standard polyol (polyol 1) and another standard polyol (polyol 3) is used, as can be seen from the right column of Table I. The catalysts and stabilizers used are the same for both foams.
Ein Diisocyanat wird mit einer Isocyanatmenge entsprechend einer Kennzahl von 90 bis 105 eingesetzt.A diisocyanate is used with an amount of isocyanate corresponding to a ratio of 90 to 105.
Aus Tabelle Il sind die physikalischen Eigenschaften des neuen Schaumstoffes und zweier Vergleichsschaumstoffe mit unterschiedlichem Raumgewicht ersichtlich.Table II shows the physical properties of the new foam and two comparative foams of different density.
Tabelle IlTable II
Der erfindungsgemäße Polyurethan-Weichschaumstoff weist ein Raumgewicht von 40 kg/m3 auf. Die physikalischen Werte wie Druckverformungsrest gemäß DIN EN ISO 1856, Wet Compression Set gemäß DIN EN ISO 1856 und Dauerschwingversuch gemäß DIN EN ISO 3385 ergeben sich aus Spalte 1. Wie aus der Gegenüberstellung mit Spalte 2 ersichtlich ist, weist der bekannte Vergleichsschaumstoff mit einem identischen Raumgewicht von 40 kg/m3 wesentlich schlechtere physikalische Eigenschaften auf.The flexible polyurethane foam according to the invention has a density of 40 kg / m 3 . The physical values such as compression set according to DIN EN ISO 1856, wet compression set according to DIN EN ISO 1856 and fatigue test according to DIN EN ISO 3385 are shown in column 1. As can be seen from the comparison with column 2, the known comparative foam with an identical density of 40 kg / m 3 has much poorer physical properties.
Zur Erzielung ähnlicher physikalischer Eigenschaften muss der Vergleichsschaumstoff ein Raumgewicht von 65 kg/m3 aufweisen, wie aus Spalte 3 ersichtlich ist. Somit weist der erfindungsgemäße Polyurethan- Weichschaumstoff bei gleichen physikalischen Eigenschaften ein um etwa 30 % reduziertes Gewicht auf.To obtain similar physical properties, the comparative foam must have a density of 65 kg / m 3 , as shown in column 3. Thus, the polyurethane flexible foam of the invention has the same physical properties by about 30% reduced weight.
Durch das reduzierte Raumgewicht ergeben sich insbesondere beim Einsatz des Schaumstoffes als Polsterung bei Flugzeugen und Schienenfahrzeugen Vorteile, da der Energieverbrauch reduziert werden kann. Neben dem Einsatz als Polsterung von Flugzeug und Schienenfahrzeug kann der erfin- dungsgemäße Schaumstoff auch bei Matratzen, die in Sicherheitsbereichen wie Gefängnissen zum Einsatz kommen Verwendung finden.The reduced volume weight results in particular when using the foam as upholstery for aircraft and rail vehicles advantages because the energy consumption can be reduced. In addition to the use as upholstery of aircraft and rail vehicle, the foam according to the invention can also be used for mattresses which are used in security areas such as prisons.
Die Herstellung des Schaumstoffes erfolgt nach dem in der DE 39 09 017 C1 beschriebenen Verfahren. The foam is produced by the process described in DE 39 09 017 C1.

Claims

Patentansprüche claims
1. Flammwidriger, elastischer Polyurethan-Weichschaumstoff, hergestellt aus einem Schaumstoff-Reaktionsgemisch, das aufweist:1. A flame retardant flexible polyurethane flexible foam made from a foam reaction mixture comprising:
a) ein Polyolgemisch;a) a polyol mixture;
b) ein Polyisocyanat;b) a polyisocyanate;
c) Blähgraphit als Flammschutzmittel;c) expanded graphite as a flame retardant;
d) Zusatzstoffed) additives
dadurch gekennzeichnet, dass das Polyolgemisch 50% bis 90% Gewichtsanteile auf Ethylenoxid basierendes Polyol und 50% bis 10% Gewichtanteile Standard-Polyol und/oder Füllstoff-Polyol aufweist.characterized in that the polyol blend comprises 50% to 90% by weight of ethylene oxide based polyol and 50% to 10% by weight of standard polyol and / or filler polyol.
2. Polyurethan-Weichschaumstoff nach Anspruch 1 dadurch gekennzeichnet, dass der Gewichtsanteil des auf Ethylenoxid basierenden Polyol 80 % und der Gewichtsanteil des Standard-Polyol und/oder Füllstoff-Polyol 20 % beträgt.2. Flexible polyurethane foam according to claim 1, characterized in that the weight fraction of the ethylene oxide-based polyol 80% and the weight fraction of the standard polyol and / or filler polyol is 20%.
3. Polyurthan-Weichschaumstoff nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass der Polyisocyanat-Anteil mit einer Isocyanatmenge entsprechend einer Kennzahl 90 bis 105 vorliegt.3. Polyurthane soft foam according to any one of claims 1 or 2, characterized in that the polyisocyanate portion is present with an amount of isocyanate corresponding to a ratio 90 to 105.
4. Polyurethan-Weichschaumstoff nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Blähgraphit-Anteil 5 bis 40 Gewichtsteile, insbesondere 30 Gewichtsteile, bezogen auf 100 Gewichtsteile Polyol beträgt.4. Flexible polyurethane foam according to one of claims 1 to 3, characterized in that the expandable graphite content is 5 to 40 parts by weight, in particular 30 parts by weight, based on 100 parts by weight of polyol.
5. Polyurethan-Weichschaumstoff nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Blähgraphit-Flammschutzmittel mit einer Korngröße von 0.2 bis 1 mm vorliegt.5. Flexible polyurethane foam according to one of claims 1 to 4, characterized in that the expandable graphite flame retardant is present with a grain size of 0.2 to 1 mm.
6. Polyurethan-Weichschaumstoff nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Blähgraphit-Flammschutzmittel in Plättchenform vorliegt.6. Flexible polyurethane foam according to one of claims 1 to 5, characterized in that the expandable graphite flame retardant is in platelet form.
7. Polyurethan-Weichschaumstoff nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass als weiteres Flammschutzmittel Chorphosphorsäureester mit 5 bis 15 Gewichtsteilen, insbesondere7. flexible polyurethane foam according to one of claims 1 to 6, characterized in that as further flame retardant Chorphosphorsäureester with 5 to 15 parts by weight, in particular
10, bezogen auf 100 Gewichtsteile Polyol vorliegt.10, based on 100 parts by weight of polyol.
8. Polyurethan-Weichschaumstoff nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Zusatzstoffe Wasser, einen Kata- lysator und einen Stabilisator enthalten.8. Flexible polyurethane foam according to one of claims 1 to 7, characterized in that the additives contain water, a catalyst and a stabilizer.
9. Polyurethan-Weichschaumstoff nach einem der Ansprüche 1 bis 8 mit einem Schaumstoff-Reaktionsgemisch, das aufweist:A flexible polyurethane foam according to any one of claims 1 to 8 comprising a foam reaction mixture comprising:
a) ein Polyolgemisch mit 80 % Gewichtsanteilen EO-basierendesa) a polyol mixture with 80% by weight EO-based
Polyol und 20 % Gewichtsanteilen Standard-Polyol und/oder Füllstoff-Polyol;Polyol and 20% by weight of standard polyol and / or filler polyol;
b) ein Polyisocyanat mit einer Isocyanatmenge entsprechend ei- ner Kennzahl von 90 bis 105.b) a polyisocyanate having an amount of isocyanate corresponding to a code number of 90 to 105.
c) 30 % Gewichtsteile Blähgraphit-Flammschutzmittel sowie 10 Gewichtsteile Chlorphosphorsäureester bezogen auf 100 Gewichtsteile Polyol. c) 30% by weight of expandable graphite flame retardant and 10 parts by weight of chlorophosphoric acid ester based on 100 parts by weight of polyol.
0. Polyurethan-Weichschaumstoff nach einem der Ansprüche 1 bis 9 dadurch gekennzeichnet, dass das Raumgewicht des Polyurethan- Weichschaumstoffes 20 bis 50 kg/m3 beträgt. 0. Flexible polyurethane foam according to one of claims 1 to 9, characterized in that the density of the flexible polyurethane foam is 20 to 50 kg / m 3 .
EP09728606A 2008-04-01 2009-03-31 Flame-retardant, reduced-weight elastic flexible polyurethane foam Withdrawn EP2260066A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008016610A DE102008016610A1 (en) 2008-04-01 2008-04-01 Flame retardant, elastic polyurethane flexible foam with reduced weight
PCT/EP2009/053842 WO2009121899A1 (en) 2008-04-01 2009-03-31 Flame-retardant, reduced-weight elastic flexible polyurethane foam

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EP2260066A1 true EP2260066A1 (en) 2010-12-15

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EP (1) EP2260066A1 (en)
DE (1) DE102008016610A1 (en)
RU (1) RU2010143318A (en)
WO (1) WO2009121899A1 (en)

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