Classifications

• • 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
  • C08G18/4841—Polyethers containing oxyethylene units and other oxyalkylene units containing oxyethylene end groups
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
  • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
  • B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
  • B29C44/0461—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities by having different chemical compositions in different places, e.g. having different concentrations of foaming agent, feeding one composition after the other
• • 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
  • C08G18/08—Processes
  • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• • 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
  • C08G18/409—Dispersions of polymers of C08G in organic compounds having active hydrogen
• • 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
  • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
  • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
  • C08G18/6666—Compounds of group C08G18/48 or C08G18/52
  • C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
  • C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
  • C08G18/6685—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3225 or polyamines of C08G18/38
• • 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
  • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
  • C08K3/016—Flame-proofing or flame-retarding additives
• • 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
  • C08K9/00—Use of pretreated ingredients
  • C08K9/04—Ingredients treated with organic substances
• • 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
  • C08G2110/0066—≥ 150kg/m3
• • 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
• • 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
  • Y10T428/249921—Web or sheet containing structurally defined element or component
  • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
• • 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
  • Y10T428/249921—Web or sheet containing structurally defined element or component
  • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
  • Y10T428/249961—With gradual property change within a component
• • 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
  • Y10T428/249921—Web or sheet containing structurally defined element or component
  • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
  • Y10T428/249981—Plural void-containing components

Definitions

• the invention relates to flame-retardant solids (such as ammonium polyphosphate, melamine or expandable graphite) contained polyurethane molded foam body, a process for their preparation and the use of these polyurethane molded foam body for components in which fire retardant properties are desired.
• flame-retardant solids such as ammonium polyphosphate, melamine or expandable graphite
• Foams have been known for a long time and are widely used because of their low density or the associated savings in material, their excellent thermal and acoustic insulation properties, their mechanical damping and their special electrical properties.
• foams can be found in packaging, in furniture and mattresses, generally in sound and heat insulation, as buoyancy bodies in watercraft, as filter and support material in various industrial sectors and as structural elements in the production of coating materials, laminates, composites or foam composite bodies.
• Phosphorus compounds are another class of flame retardants that can be used to provide foams.
• the disadvantage here is in particular that in case of fire as well as in halogen-containing flame retardants a very high smoke density is formed. Because of the toxicity of the flue gases and the visual obstruction by the smoke people in the vicinity of the fire, especially in closed areas, endangered and rescue work difficult.
• WO 2004/056920 A2 describes the use of ammonium sulfate as (inorganic) flame retardant.
• Expanded graphite is a so-called Intercalation compound in which molecules are intercalated between the carbon layers of the graphite. These are usually sulfur or nitrogen compounds.
• Melamines are also used very frequently in the field of PU foam production, as is known from GB 2 369 825 A, for example.
• Expanded graphite has also long been known as a flame retardant in the field of polyurethane foam production. Under the action of heat, the layers of graphite are forced apart like an accordion by thermolysis; Expand graphite flakes. Depending on the type of expanded graphite, the expansion can begin at around 150 ° C. and take place almost instantaneously. With free expansion, the final volume can reach several hundred times the original volume.
• the flame retardancy of expanded graphite is based on the formation of such an intumescent layer on the surface. This slows down the expansion of the fire and counteracts the most dangerous consequences for humans, namely the formation of toxic gases and smoke.
• the properties of the expanded graphite are mainly determined by the quality of intercalation (that is, how many of the base-parallel layers were intercalated) and by the intercalation agent.
• PU rigid foam boards for example in furniture, mattresses etc.
• carpets for example in furniture, mattresses etc.
• textiles for example synthetic resin coatings, plastic films, plastic coatings, rubber materials (for example conveyor belts) and pipe bulkheads.
• DE 103 02 198 A1 describes the alternative use of expandable graphite as a flame retardant in polyurethane foams.
• DE 39 09 017 C1 describes a process for the preparation of a flame-retardant, flexible polyurethane flexible foam, from a foam reaction mixture with a polyol and a polyisocyanate and a proportion of expandable graphite in platelet form as a flame retardant, in which the platelets of the order of the resulting foam Cell walls, wherein the expandable graphite is first added to the reaction components polyol and foaming the foam is stored so that it forms at least a portion of the cell walls.
• DE 40 10 752 A1 also describes the additional use of melamine.
• a general problem of many solid flame retardants results from the fact that these solids are not soluble in the polyol component. This has the consequence that the dispersion of the polyol component and the flame retardant must be constantly stirred in order to avoid sedimentation of the flame retardant in the reservoir and to ensure a homogeneous distribution of the flame retardant within the foam.
• melamines have the undesirable property of being "baked together" very quickly after sedimentation, which considerably complicates redispersion of the solids cake.
• composite materials are described in the prior art, in addition to an expanded graphite as a solid containing PUR-molding contain a further foam material, such as a melamine resin foam (for example, Basotect ® of BASF AG) in the case of EP 1867455 A2.
• a further foam material such as a melamine resin foam (for example, Basotect ® of BASF AG) in the case of EP 1867455 A2.
• melamine resin foam for example, Basotect ® of BASF AG
• the melamine resin foams are produced by the condensation of melamine and formaldehyde. This results in the end use of this material to increased formaldehyde, which are undesirable, for example, in the automotive sector but also in the furniture sector.
• the described melamine resin foam (Basotect ®) can be purchased beyond just as blockware (reference by the BASF AG, Ludwigshafen and production in Schwarzheide) and must therefore be tailored for the respective applications. For this reason, even in this manufacturing step, the design freedom is severely limited. Comparing the two materials PUR and melamine resin foam, the melamine resin foam shows only a weak compressive strength behavior in terms of compression set in terms of height loss and load capacity and only a weak behavior in the tensile strength (from the Abstract Book of VDI Symposium "Polyurethane 2005" on 26. and 27.1.2005, Baden-Baden).
• the use of flame retardant solids such.
• ammonium polyphosphate, melamine or expanded graphite hereinafter referred to as solid
• solid as a flame retardant in such a way to optimize the amount that a flame retardant effect is achieved in particular at the points of a molded polyurethane foam body to which this is required. This then leads to a reduction of the required amount of the solid.
• a molded polyurethane foam body which is characterized in that Proportion of a flame-retardant solid in its surface area is greater than the proportion of this flame-retardant solid in an inner region of the polyurethane molded foam body.
• the molded polyurethane foam body according to the invention consists of one or more different polyurethanes and at least one flame-retardant solid.
• the polyurethane molded foam body according to the invention is preferably a flexible foam body, which is therefore produced using such molded foams which leave flexible structures after they have hardened.
• Flame-retardant solids mean materials and mixtures which are added to a polymer matrix in order to reduce the spread of this fire in the event of a fire. Particularly preferred are ammonium phosphate, melamine or expandable graphite alone or in combination with one another.
• Crib 5 i.a. self-extinguishing
• portion of the solid in a surface area / inner area of the molded polyurethane foam body is to be understood as meaning the volume and / or volume fraction of the solid in a defined but variable volume, two volumes of equal size but not spatially overlapping being used to compare proportions , namely one in the vicinity of the surface or one inside the polyurethane molded foam body are compared.
• Such an inventive structure of a solid polyurethane foam body containing a solid causes an accumulation of the solid in its surface region of the polyurethane molded foam body, that is, in the area exposed to a flame hearth.
• a flame retardant is therefore mainly, if not exclusively introduced only there in the show material body, where it is needed. This means a significant saving in terms of the amount of solid needed.
• the proportion of the solid in a volume within the surface area is preferably at least 10%, very particularly preferably at least 20% greater than the proportion of Solid in a volume in an inner region of the foam body.
• the process for producing the molded polyurethane foam body to be discussed in more detail below makes it possible to design it so that the proportion of the solid from the interior of the molded polyurethane foam body increases continuously or discontinuously up to its surface.
• a discontinuous increase is understood to mean, in a sense, sudden increases in which areas with different proportions of solids can be distinguished from one another, but these areas themselves do not have to be produced discontinuously.
• a discontinuous production of different regions or layers is possible, which then, however, are not particularly different from one another (for example, visually).
• the molded polyurethane foam body according to the invention comprises at least two fully or partially coated layers of the same or different foam compositions which differ from each other at least in the proportion of the solid.
• the polyurethane foam molded body according to the invention when using the polyurethane foam molded body according to the invention as a seat, the upper surface provided as the actual seat surface is certainly to be regarded as exposed as the lower, the ground-facing surface. The upper layer would therefore have to have a higher proportion of solids than the lower layer. Furthermore, it is possible for the polyurethane molded foam body to comprise at least one or more surface layers containing flame retardant solids and at least one flame retardant solids-free layer.
• a further development of the seat shell just described is possible in that a three-layered structure is selected which comprises a flame-retardant solid, a flame-retardant solid-free and a flame-retardant solid-poorer foam layer.
• the entire surface of the molded polyurethane foam body it is not necessary for the entire surface of the molded polyurethane foam body to comprise the material "enriched in solids.”
• the material "enriched in solids” it is preferred that only a defined area of the surface, namely the area particularly exposed in the event of fire, be correspondingly equipped.
• the surface area enriched with flame-retardant solid has a layer thickness in a range of 0.2 mm to the maximum thickness of a seat cushion, in particular in a range of 1 mm to 2 cm.
• the proportion of the flame-retardant solid in the surface region may be in a range from 1 to 80% by weight, in particular in a range from 5 to 30% by weight. It is easy to understand that the flame retardance can be set (almost) as desired by these two variable variables, that is to say the layer thickness of the flame-retardant solid-containing surface region on one side or the proportion of the flame-retardant solid in this layer on the other side , Larger layer thicknesses and larger amounts of flame-retardant solid accordingly result in a higher flameproofing effect. Excessively large layer thicknesses and / or proportions of the flame-retardant solid are less preferred in that, as a result, correspondingly large amounts are required. Because of these two opposing tendencies, the upper and lower limits described above are preferred.
• the density of the surface area containing the flame retardant solid (s) ranges from 10 to 800, especially to 2,000, more preferably from 30 to 200, more preferably from 900 to 300 kg / m 3 .
• the molded polyurethane foam body according to the invention may also comprise at least one further solid and / or liquid flame-retardant additive in addition to the solid.
• the polyurethane molded foam body according to the invention may also comprise a full or partial area (decorative) layer.
• This (decorative) layer may, for example, likewise be a PUR molded foam or PUR elastomer, which is advantageously initially introduced in the mold in the method to be described below.
• other decorative materials are conceivable (textiles, nonwovens, etc.).
• the object underlying the invention is achieved by a process for producing a molded polyurethane foam body as defined above in which a liquid and / or solid flame retardant substance is introduced into a reaction mixture of polyol component and isocyanate component, the resulting mixture for training of the polyurethane molded foam body, characterized in that the ratio V of the amount of the flame retardant substance to the amount of the reaction mixture within a defined time interval is constant, but different from this ratio in an adjoining second time interval.
• quantity may refer to both mass and volume.
• time intervals for gradient formation of the flame-retardant solid in the polyurethane molded foam body are the same length.
• the length of the two On the other hand, time intervals of the same length are not subject to any restriction in the present invention, that is to say they can be selected as desired.
• a "comparison of two time intervals” does not necessarily mean that the time intervals used for comparison must lie within the same process for forming the foam (for example, application of a PUR raw material). It may also mean (equal) time intervals within various application processes (for example, applying a solid-state PUR jet on one side followed by applying a solid-free PUR jet on the other side) of the molded polyurethane foam body.
• polyurethane molded foam body can be realized with very different distributions of flame-retardant solid within the polyurethane molded foam body.
• Such a method is very well suited to provide different areas of a molded polyurethane foam body with different amounts of flame retardant substances.
• liquid flame retardants in addition to solid flame retardants (that is, solids in the context of the present invention)
• the former not in the foam raw material, but rather in a component used to prepare the foam raw material bring, that is so in the polyol or isocyanate component.
• This can be introduced alternatively or cumulatively in the component reservoir or in the component flow leading to the mixing chamber. In the latter case, it is much easier to ensure a temporally or quantitatively variable introduction of the liquid flame-retardant substance into the component and thus the foam raw material.
• inserts can be used both in the outer layer and in the inner PUR core.
• polyurethane molded foam bodies can be produced "wet on wet.” This means that when applying in several stages, it is not necessary to wait until complete curing of the PUR material applied in a previous stage. Thus, no additional work step is required to produce a (finished) inner core, and the PUR formulation (using the appropriate technique) can thus be processed in one operation.
• the composition of the polyurethane layer can also be varied.
• a different amount of water in the recipe leads to a Different degrees of cell gas formation and thus allows an exact adjustment of the layer thickness.
• this can also be done by the addition of other blowing agents (both chemically and physically).
• the mixing ratio of polyol and isocyanate can be changed.
• the jet containing the flame-retardant solid be introduced into the jet of foam raw material or a jet of the foam
• Foam raw material directed into the solid-containing jet By this mutual registration of the two materials optimum wetting of the solid is achieved with the advantages already described above. In addition, a mixing of the solid in a liquid foam raw material eliminates what avoids the disadvantages already described above.
• a further preferred variant of the method is characterized in that a foam-containing solid layer containing foam in a form, in particular in a tool and on this another foam material applies, which contains no flame-retardant solid or has a lower solids content.
• the flame-retardant solid-containing foam layer is preferably initially charged by spraying or spraying all or part of an open mold. Subsequently, the one having a lower flame retardant solids content
• Foam layer either also by spray application or by casting (optionally after previous closure of the mold) are applied to the previously submitted layer.
• a variant of the present invention is first to produce a non-flame-retardant flexible foam and then subsequently sprayed with a flame-retardant layer.
• the bulk density of the mixture of foam raw material and flame-retardant substance used for the application is in a range from 10 to 800, in particular up to 2000, in particular in a range from 30 to 200, in particular up to 900 kg / m 3 .
• thixotropy can be useful.
• This increased thixotropy can be achieved by exploiting the different reactivities of the starting materials (such as, for example, amines, polyethers, amino-modified polyethers, varied catalysis, etc.) for the controlled adjustment of the viscosity of the reaction mixture. From the literature, such a modification for the targeted adjustment of thixotropy is known. For example, Guether, Markusch and Cline described the use of "Non-sagging Polyurethane Compositions" at the Polyurethanes Conference 2000 (October 8-11, 2000).
• the object underlying the present invention is achieved by the use of the polyurethane molded foam body according to the invention as fire-retardant sound and / or heat insulation, filling, sealing material.
• the molded polyurethane foam bodies according to the invention in particular soft-foam foams, can be produced as a molded part with a wide variety of geometries.
• a polyol / isocyanate mixture was sprayed onto the one mold surface.
• the shape was aligned so that it could be sprayed evenly from all sides.
• the mixing of the polyols and isocyanates took place in a mixing head (mixing element).
• the polyol / isocyanate mixture was sprayed with an amount of about 600 g (corresponding to a spray time of about 45 seconds), while the solid at 1.5 to 4.5 g per second in the Reaction mixture was blown.
• the polyol / isocyanate mixture was sprayed at a discharge rate of about 37 g / s, while the solid was blown into the reaction mixture at 2.0 to 8.2 g per second.
• the mold was then foamed by means of a reaction casting machine in open or closed mold-filling with a bulk density of 60 to 65 g / l (Examples 1-4) or a bulk density of 55 g / l (Examples 5-12). It was not necessary to wait for complete reaction of the sprayed polymer mixture to allow a more efficient operation. Backfoaming could be done directly (so "wet in wet") Alternatively, of course, this step can be done in two steps be subdivided, so first the spray are made, which is then inserted for backfoaming in a tool.
• the formulation of the system used for the purpose of foaming may differ from that used in the sprayed skin.
• the formulations according to the invention are described at the end of the embodiment.
• the composite of sprayed outer layer and foam-molded part could then be removed from the mold.
• the British Standard 5852, pari 2, Crib 5 burn test is passed if the weight loss is below 60 g and the self-extinguishing time is less than 10 minutes.
• the British Standard 5852, Part 2, Crib 5 burn test is passed when the weight loss is below 60 g and the self-extinguishing time is below 10 minutes.
• Polyol 1 A commercially available tri-functional PO / EO polyether with 80 to 85% primary OH groups and an OH number of 28.
• Polyol 2 A commercially available tri-functional PO / EO filler polyether (filler: polyurea dispersion, about 20%) with an OH number of 28.
• Polyol 3 A commercially available tri-functional PO / EO polyether with 83% primary OH groups and an OH number of 37.
• Polyol 4 A commercially available tri-functional PO / EO polyether with 80 to 85% primary OH groups and an OH number of 35.
• Crosslinker 1 monoethylene glycol, e.g. ETHYLENE GLYCOL from INEOS.
• Crosslinker 2 Diethyltoluenediamin (DETDA) such as ETHACURE ® 100 Curative from Albemarle Corporation.
• DETDA Diethyltoluenediamin
• Propellant additive VP. PU 19IF00 A from Bayer AG.
• Stabilizer Tegostab ® B 8629, polyether polysiloxane copolymer from Evonik Goldschmidt GmbH.
• Color paste black paste N, e.g. ISOPUR black paste N from iSL-Chemie.
• Activator 1 bis (2-dimethylaminoethyl) ether dissolved in dipropylene glycol, e.g. Niax A 1 of the company Air Products.
• Activator 2 tetramethyliminobispropylamine, e.g. Jeffcat Z 130 from Huntsman.
• Activator 3 triethylenediamines in dipropylene glycol, eg DABCO 33- LV® Catalyst from Air Products.
• DBTDL dibutyltin dilaurate
• Polyisocyanate A prepolymer with an NCO content of about 30%, prepared on the basis of 2-core MDI and its higher homologues and a polyether having the OH number 28.5 and a functionality of 6. VerDumun ⁇ sbeiitul:
• the expanded graphite used in Examples 1-4 was: "Grafguard * Expand FL 160-50 N” from Graftech.
• the expandable graphite used in Examples 5-12 was "Expofoil PX 99".

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• Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• Dispersion Chemistry (AREA)
• Polyurethanes Or Polyureas (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
• Laminated Bodies (AREA)

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• 2009
  • 2009-02-13 CA CA 2716712 patent/CA2716712A1/en not_active Abandoned
  • 2009-02-13 WO PCT/EP2009/001007 patent/WO2009106236A1/de active Application Filing
  • 2009-02-13 US US12/919,575 patent/US20110006579A1/en not_active Abandoned
  • 2009-02-13 BR BRPI0908532A patent/BRPI0908532A2/pt not_active IP Right Cessation
  • 2009-02-13 RU RU2010139277/04A patent/RU2010139277A/ru not_active Application Discontinuation
  • 2009-02-13 JP JP2010547987A patent/JP2011514921A/ja not_active Withdrawn
  • 2009-02-13 EP EP09715338A patent/EP2247634A1/de not_active Withdrawn
  • 2009-02-13 MX MX2010008617A patent/MX2010008617A/es unknown
  • 2009-02-13 CN CN2009801065104A patent/CN101959918A/zh active Pending
• 2010
  • 2010-08-24 ZA ZA2010/06019A patent/ZA201006019B/en unknown

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