INSULATION MOULDING AND METHOD FOR ITS MANUFACTURE

The invention relates to a method for the manufacture of an insulation moulding, in particular of refrigerating appliances, in which the moulding is provided by filling a cavity between an inner and an outer wall of an open-box-shaped mould (M) with a polyurethane reaction mixture and allowing the p...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Vogel, Stephanie, Albers, Reinhard, Loof, Michael, Otto, Frank
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BLASTING CHEMISTRY COLD ROOMS COMBINED HEATING AND REFRIGERATION SYSTEMS COMPOSITIONS BASED THEREON CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS GENERAL PROCESSES OF COMPOUNDING HANDLING THIN OR FILAMENTARY MATERIAL HEAT PUMP SYSTEMS HEATING ICE-BOXES LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MAKING GRANULES OR PREFORMS MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS REFRIGERATION OR COOLING REFRIGERATORS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STORING THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	The invention relates to a method for the manufacture of an insulation moulding, in particular of refrigerating appliances, in which the moulding is provided by filling a cavity between an inner and an outer wall of an open-box-shaped mould (M) with a polyurethane reaction mixture and allowing the polyurethane reaction mixture to cure to a polyurethane containing polymer C, the inner and outer wall being arranged in a fixed distance to one another and each wall comprising a bottom face (3) and a plurality of side faces (1, 2, 4, 5), whereas the polyurethane reaction mixture is fed through an inlet opening (I) positioned in the middle area of the bottom face (3) of the outer wall, wherein before filling the cavity, the mould (M) is turned with the bottom face of the outer wall downwards so that the polyurethane reaction mixture is foaming upwards to fill the cavity, whereas the method is characterized in that the polyurethane reaction mixture comprises an isocyanate component B which is reacted with an emulsion comprising (I) an isocyanate-reactive composition A, containing a polyol mixture Al consisting of at least three polyols A1a, Alb and A1c as the continuous phase and (II) at least one physical blowing agent T as the disperse phase, wherein: (i) A1a is a polyether polyol having a hydroxyl value from 15 mg KOH/g to 550 mg KOH/g and a functionality from 1.5 to 6.0, obtained by the addition of an epoxy to one or more starter compound(s) selected from the group consisting of carbohydrates and difunctional or higher-functional alcohols; (ii) Alb is a polyether polyol having a hydroxyl value from 100 mg KOH/g to 550 mg KOH/g and a functionality from 1.5 to 5.0, obtained by the addition of an epoxy to an aromatic amine; (iii) A1c is a polyester polyether polyol having a hydroxyl value from 100 mg KOH/g to 450 mg KOH/g and a functionality from 1.5 to 3.5, obtained by the addition of an epoxy to the esterification product of an aromatic dicarboxylic acid derivative and a difunctional or higher-functional alcohol. The invention further relates to an insulation moulding prepared by that process.