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1. WO2009050025 - HETEROPHASIC POLYOLEFIN COMPOSITIONS HAVING IMPROVED TENSILE PROPERTIES

Publication Number WO/2009/050025
Publication Date 23.04.2009
International Application No. PCT/EP2008/062998
International Filing Date 29.09.2008
IPC
C08L 23/08 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
23Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
02not modified by chemical after-treatment
04Homopolymers or copolymers of ethene
08Copolymers of ethene
CPC
C08L 2205/02
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
2205Polymer mixtures characterised by other features
02containing two or more polymers of the same C08L -group
C08L 23/0815
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
23Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
02not modified by chemical after-treatment
04Homopolymers or copolymers of ethene
08Copolymers of ethene
0807Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
0815Copolymers of ethene with aliphatic 1-olefins
C08L 23/10
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
23Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
02not modified by chemical after-treatment
10Homopolymers or copolymers of propene
Applicants
  • BASELL POLIOLEFINE ITALIA S.R.L. [IT]/[IT] (AllExceptUS)
  • SUNALLOMER LTD [JP]/[JP] (JP)
  • PELLEGATTI, Giampaolo [IT]/[IT] (UsOnly)
  • GOBERTI, Paolo [IT]/[IT] (UsOnly)
  • BARALDI, Letizia [IT]/[IT] (UsOnly)
  • MINOWA, Kazuhiko [JP]/[JP] (UsOnly)
  • HISANAGA, Yukihiro [JP]/[JP] (UsOnly)
Inventors
  • PELLEGATTI, Giampaolo
  • GOBERTI, Paolo
  • BARALDI, Letizia
  • MINOWA, Kazuhiko
  • HISANAGA, Yukihiro
Agents
  • GAVERINI, Gaetano
Priority Data
07118685.217.10.2007EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) HETEROPHASIC POLYOLEFIN COMPOSITIONS HAVING IMPROVED TENSILE PROPERTIES
(FR) COMPOSITIONS POLYOLÉFINIQUES HÉTÉROPHASES AYANT DES PROPRIÉTÉS DE RÉSISTANCE À LA TRACTION AMÉLIORÉES
Abstract
(EN)
Polyolefin composition comprising, in percent by weight: A) 50-75% of a blend of polymers (PP) and (ECI), wherein (PP) is selected from the group consisting of: (i) propylene homopolymers; (ii) copolymers of propylene; (iii) combinations of said homopolymers (i) and copolymers (ii); (EC1) is a copolymer of ethylene and propylene or CH2=CHR alpha-olefin(s), where R is a 2-8 carbon alkyl radical, or a copolymer of ethylene, propylene and the said CH2=CHR alpha-olefin(s), containing from 20 to 35%, of ethylene; and B) 25-50% of a copolymer (ECII) of ethylene and propylene or CH2=CHR alpha-olefin(s), where R is a 2-8 carbon alkyl radical,or a copolymer of ethylene, propylene and the said CH2=CHR alpha-olefin(s), containing from 40 to 60% of ethylene; in which composition the copolymer component (ECI) is present in amounts from 23 to 45% with respect to the total weight of (A),and the intrinsic viscosity [ηtot] of the fraction XS soluble in xylene at room temperature, referred to the total weight of (A) + (B), is of 3.5 dl/g or more.
(FR)
La composition polyoléfinique de l'invention comprend, en pourcentage en poids : A) de 50 à 75 % d'un mélange de polymères (PP) et (ECI), (PP) étant choisi dans le groupe constitué par : (i) les homopolymères de propylène; (ii) les copolymères de propylène; (iii) les combinaisons desdits homopolymères (i) et copolymères (ii); (ECI) étant un copolymère d'éthylène et de propylène ou d'alpha-oléfine(s) CH2=CHR, où R est un radical alkyle ayant de 2 à 8 atomes de carbone, ou un copolymère d'éthylène, de propylène et de ladite ou desdites alpha-oléfines CH2=CHR, contenant de 20 à 35 % d'éthylène; et B) de 25 à 50 % d'un copolymère (ECII) d'éthylène et de propylène ou d'alpha-oléfine(s) CH2=CHR, où R est un radical alkyle ayant de 2 à 8 atomes de carbone, ou un copolymère d'éthylène, de propylène et de ladite ou desdites alpha-oléfines CH2=CHR, contenant de 40 à 60 % d'éthylène. Dans la composition de l'invention, le composant copolymère (ECI) est présent en des quantités de 23 à 45 % par rapport au poids total de (A), et la viscosité intrinsèque [ηtot] de la fraction XS soluble dans du xylène à température ambiante, par rapport au poids total de (A) + (B), est de 3,5 dl/g ou plus.
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