Brevet : EP1948731 - RESINE POLYPROPYLENE PRESENTANT UN FAIBLE RETRECISSEMENT, UNE HAUTE RESISTANCE ...
Titre
RESINE POLYPROPYLENE PRESENTANT UN FAIBLE RETRECISSEMENT, UNE HAUTE RESISTANCE AU CHOC, UNE RIGIDITE ELEVEE ET UNE HAUTE RESISTANCE A LA RAYURE
N° et date de publication de la demande
EP1948731 - 30/07/2008
Type de la demande
A1
N° et date de dépôt
EP06829030 - 13/11/2006
N° et date de priorité
EP05025068 - 16/11/2005
Classification CIB
Classification CPC
C08L 23/0815 ; C08L 23/10 ; C08L 23/12 ; C08L 23/142 ; C08L 23/16 ; C08L2205/03 ; C08L 23/10 ; C08L 23/12 ; C08L 23/142 ; C08L 23/16 ; C08L 23/0815 ; C08L2205/03 ; C08L 23/10 ; C08L 23/16 ; C08L 23/12 ; C08L2205/03 ; C08L 23/142 ; C08L 23/0815
Famille de brevets
EA200801075A1 ; PL1788022T3 ; CN101309961A ; ES2315776T3 ; BRPI0618698A2 ; EP1788022A1 ; EP1948731A1 ; SI1788022T1 ; KR20080074973A ; US2009137722A1 ; ATE419303T1 ; WO2007057142A1
Abrégé
The present invention relates to a polypropylene resin with low shrinkage, excellent impact strength and high stiffness and scratch resistance which comprises A) less than 70 wt% of a propylene polymer A having a melt flow rate (MFR 2 ) between 0.01 and 100 g/10 min, B) more than 20 wt% of an ethylene-propylene copolymer B, containing at least 40 wt% propylene and having an intrinsic viscosity between 1 and 3.5 dl/g, and C) less than 20 wt% of an ethylene polymer C with a density between 905 and 930 kg/m 3 and a melt flow rate (MFR 2 ) between 0.01 and 10 g/10 min, to the use of said resin for the production of a molded or extruded article and to an article comprising said resin.
INTERVENANTS
Déposant
BOREALIS TECH OY (BOREALIS TECHNOLOGY OY) - FI
Inventeur
MACHL DORIS (MACHL, DORIS) - AT
BERNREITNER KLAUS (BERNREITNER, KLAUS) - AT
GREIN CHRISTELLE (GREIN, CHRISTELLE) - AT