EP 4081594 A1 20221102 - HIGH MELT STRENGTH POLYPROPYLENE COMPOSITION AND PROCESS FOR MANUFACTURING THEREOF
Title (en)
HIGH MELT STRENGTH POLYPROPYLENE COMPOSITION AND PROCESS FOR MANUFACTURING THEREOF
Title (de)
HOCHSCHMELZFESTE POLYPROPYLENZUSAMMENSETZUNG UND VERFAHREN ZU IHRER HERSTELLUNG
Title (fr)
COMPOSITION DE POLYPROPYLÈNE À HAUTE RÉSISTANCE À L'ÉTAT FONDU ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
RU 2019001042 W 20191227
Abstract (en)
[origin: WO2021133203A1] The present invention relates to a polypropylene composition that is especially suitable for making articles by foaming. The polyethylene composition according to the invention comprises: a random propylene copolymer; a vinyl monomer; a peroxide initiator; an antioxidant and/or a heat stabilizer. Furthermore, the composition may comprise a propylene homopolymer, a polyolefin elastomer, and other additives. The composition is preferably manufactured by pre-blending the first 3 components at a certain temperature and holding time to produce a concentrate, a so-called pre-blend. Blending and processing into a homogeneous melt are carried out in special mixing equipment and an extruder. The technical result of the present invention is to obtain of a high melt strength polypropylene composition by reactive extrusion with melt strength values of between 18 and 43 cN, in combination with improved melt flow indices of the modification products: MFI230° c/2.16kg ranging from 0.5 to 3.0 g/10 min.
IPC 8 full level
C08L 23/14 (2006.01); C08J 9/00 (2006.01); C08K 5/01 (2006.01); C08K 5/101 (2006.01); C08K 5/14 (2006.01); C08K 5/3415 (2006.01); C08L 23/16 (2006.01)
CPC (source: EP)
C08J 9/0023 (2013.01); C08J 9/0028 (2013.01); C08J 9/0061 (2013.01); C08K 5/134 (2013.01); C08K 5/14 (2013.01); C08K 5/526 (2013.01); C08L 23/14 (2013.01); C08J 2323/14 (2013.01); C08J 2323/16 (2013.01); C08J 2423/08 (2013.01); C08J 2423/12 (2013.01)
C-Set (source: EP)
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 RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2021133203 A1 20210701; CN 114867782 A 20220805; EP 4081594 A1 20221102; EP 4081594 A4 20230823
DOCDB simple family (application)
RU 2019001042 W 20191227; CN 201980103254 A 20191227; EP 19957492 A 20191227