EP 1289753 A2 20030312 - IMPROVED BARRIER COMPOSITIONS FOR MULTILAYER EXTRUSION AND BARRIER PERFORMANCE
Title (en)
IMPROVED BARRIER COMPOSITIONS FOR MULTILAYER EXTRUSION AND BARRIER PERFORMANCE
Title (de)
VERBESSERTE SPERRZUSAMMENSETZUNGEN FÜR MEHRSCHICHTEXTRUSION UND SPERRLEISTUNG
Title (fr)
COMPOSITIONS POLYESTER AMELIOREES POUR UNE EXTRUSION MULTICOUCHE ET UNE EFFICACITE DE LA COUCHE BARRIERE
Publication
Application
Priority
- US 0115431 W 20010511
- US 20782000 P 20000530
Abstract (en)
[origin: WO0192007A2] Improved multi-layer coextruded blow-molded objects (such as fuel containers) having at least a barrier layer and a support layer are disclosed together with improved methods for preparing such objects. The barrier layer includes an amount of modified polyolefin having approximately the same density as the support layer, wherein the modified polyolefin is prepared by grafting an unsaturated carboxylic acid or a derivative thereof to the polyolefin, the modified polyolefin being added in an amount such that the gas-barrier layer sufficiently adheres to the adjacent layer and such that the gas barrier properties of the fabricated article are still adequate. The present invention also relates to modification of the rheology of base resins, such as PET (a preferred material for the barrier layer), so that they more closely match the rheology of high density polyethylene (a preferred material for the support layer).
IPC 1-7
B32B 27/08; B32B 31/30; C08L 77/00; C08L 67/00; C08L 67/02; C08L 29/04
IPC 8 full level
B32B 27/32 (2006.01); B32B 27/08 (2006.01); C08L 67/02 (2006.01); C08L 77/00 (2006.01); C08L 77/02 (2006.01); C08L 77/06 (2006.01); B29C 49/00 (2006.01); B29C 49/22 (2006.01); B32B 37/15 (2006.01)
CPC (source: EP KR US)
B29C 49/0005 (2013.01 - US); B29C 49/22 (2013.01 - US); B32B 27/08 (2013.01 - EP KR); C08L 67/02 (2013.01 - EP); C08L 77/00 (2013.01 - EP); C08L 77/02 (2013.01 - EP); C08L 77/06 (2013.01 - EP); B29C 49/0005 (2013.01 - EP); B29C 49/22 (2013.01 - EP); B29C 2949/0862 (2022.05 - EP); B32B 37/153 (2013.01 - EP); B32B 2439/00 (2013.01 - EP)
C-Set (source: EP)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0192007 A2 20011206; WO 0192007 A3 20020425; AU 6152401 A 20011211; BR 0111663 A 20030527; CA 2408229 A1 20011206; CN 1431954 A 20030723; EP 1289753 A2 20030312; JP 2003534946 A 20031125; KR 20030007740 A 20030123; MX PA02011932 A 20030527
DOCDB simple family (application)
US 0115431 W 20010511; AU 6152401 A 20010511; BR 0111663 A 20010511; CA 2408229 A 20010511; CN 01810282 A 20010511; EP 01935425 A 20010511; JP 2001588001 A 20010511; KR 20027016156 A 20021128; MX PA02011932 A 20010511