EP 2475522 A1 20120718 - COMPOSITE MOLDED PART, IN PARTICULAR FOR FURNITURE CONSTRUCTION
Title (en)
COMPOSITE MOLDED PART, IN PARTICULAR FOR FURNITURE CONSTRUCTION
Title (de)
VERBUNDFORMTEIL INSBESONDERE FÜR DEN MÖBELBAU
Title (fr)
PIÈCE MOULÉE COMPOSITE DESTINÉE EN PARTICULIER À LA FABRICATION DE MEUBLES
Publication
Application
Priority
- EP 09169566 A 20090907
- EP 2010063044 W 20100906
- EP 10751926 A 20100906
Abstract (en)
[origin: WO2011026977A1] The invention relates to a composite molded part, in particular for furniture construction, contains a core layer and one or more layers, wherein the core layer is designed as a closed-cell extrusion foam sheet having a cell count of 1-30 cells per mm and a density of 20-200 g/l and can be obtained by extrusion foaming a foamable melt, comprising (a) heating a polymer component P, which is composed of 85 to 100% by weight of component P', consisting of P1) 100 to 0% by weight (in relation to P') of one or more alpha-methyl styrene acrylonitrile copolymers (AMSAN), containing P11) 18 to 40% by weight (in relation to AMSAN) acrylonitrile embedded by polymerization, P12) 60 to 82% by weight (in relation to AMSAN) alpha-methyl styrene embedded by polymerization (P121) or a mixture, embedded by polymerization, of alpha-methyl styrene and styrene (P122), P13) 0 to 22% by weight (in relation to AMSAN) of at least one monomer embedded by polymerization from the group consisting of alkyl(meth)acrylates, (meth)acrylic acid, maleic acid anhydride and maleinimides, and P2) 0 to 100% by weight (in relation to P') of one or more styrene acrylonitrile copolymers (SAN), containing, preferably consisting of, P21) 18 to 40% by weight (in relation to SAN) acrylonitrile embedded by polymerization, P22) 60 to 82% by weight (in relation to SAN) styrene embedded by polymerization, and P23) 0 to 22% by weight (in relation to SAN) of at least one monomer embedded by polymerization from the group consisting of alkyl(meth)acrylates, (meth)acrylic acid, maleic acid anhydride and maleinimide, wherein the sum of the percentages by weight of P1 and P2 is 100% by weight, in relation to P', and P3) 0 to 15% by weight (in relation to P) of one or more thermoplastic polymers from the group consisting of styrene polymers and copolymers, polyolefins, polyacrylates, polycarbonates (PC), polyesters, polyamides, polyether sulfones (PES), polyether ketones (PEK) and polyether sulfides (PES), to form a polymer melt, (b) introducing 1 to 12% by weight (in relation to P) of a expanding agent component T, which preferably contains less than 0.2% by weight water (in relation to P), containing b1) 15 to 95% by weight (in relation to T) carbon dioxide and b2) 5 to 85% by weight (in relation to T) of one or more co-expanding agents selected from the group consisting of C1-C4 alcohols and C1-C4 carbonyl compounds, into the polymer melt to form a foamable melt, (c) extruding the foamable melt in a range of lower pressure to foam it into the extrusion foam, (d) optionally adding additives to the polymer component P in at least one of steps a), b) and/or c).
IPC 8 full level
B32B 27/30 (2006.01); C08L 25/12 (2006.01); C08L 25/16 (2006.01)
CPC (source: EP)
B32B 5/022 (2013.01); B32B 5/024 (2013.01); B32B 5/18 (2013.01); B32B 5/22 (2013.01); B32B 5/245 (2013.01); B32B 7/12 (2013.01); B32B 15/046 (2013.01); B32B 15/20 (2013.01); B32B 21/02 (2013.01); B32B 21/047 (2013.01); B32B 27/065 (2013.01); B32B 27/304 (2013.01); B32B 27/36 (2013.01); B32B 27/42 (2013.01); C08J 9/142 (2013.01); C08L 25/12 (2013.01); C08L 25/16 (2013.01); B32B 2260/021 (2013.01); B32B 2260/046 (2013.01); B32B 2262/02 (2013.01); B32B 2262/06 (2013.01); B32B 2262/08 (2013.01); B32B 2262/101 (2013.01); B32B 2266/0214 (2013.01); B32B 2266/0242 (2013.01); B32B 2266/025 (2013.01); B32B 2266/0257 (2013.01); B32B 2266/0264 (2013.01); B32B 2266/08 (2013.01); B32B 2307/306 (2013.01); B32B 2307/50 (2013.01); B32B 2307/546 (2013.01); B32B 2307/72 (2013.01); B32B 2419/00 (2013.01); B32B 2479/00 (2013.01); B32B 2605/00 (2013.01); C08J 2201/03 (2013.01); C08J 2205/052 (2013.01); C08J 2325/12 (2013.01)
Citation (search report)
See references of WO 2011026977A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 2010063044 W 20100906; EP 10751926 A 20100906