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1. EP2731989 - HETEROPHASIC POLYPROPYLENE WITH LOW CLTE AND HIGH STIFFNESS

Office
European Patent Office
Application Number 12737762
Application Date 11.07.2012
Publication Number 2731989
Publication Date 21.05.2014
Publication Kind B1
IPC
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
C08K 5/00
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUSE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
5Use of organic ingredients
CPC
C08L 23/12
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
12Polypropene
C08L 23/14
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
14Copolymers of propene
C08L 2205/03
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
2205Polymer mixtures characterised by other features
03containing three or more polymers in a blend
C08L 2205/24
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
2205Polymer mixtures characterised by other features
24Crystallisation aids
C08L 2207/02
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
2207Properties characterising the ingredient of the composition
02Heterophasic composition
C08L 2308/00
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
2308Chemical blending or stepwise polymerisation process with the same catalyst
Applicants BOREALIS AG
Inventors POTTER GREGORY
GRESTENBERGER GEORG
Designated States
Priority Data 11174131 15.07.2011 EP
12737762 11.07.2012 EP
Title
(DE) HETEROPHASISCHES POLYPROPYLEN MIT NIEDRIGEM LÄNGENAUSDEHNUNGSKOEFFIZIENT UND HOHER STEIFHEIT
(EN) HETEROPHASIC POLYPROPYLENE WITH LOW CLTE AND HIGH STIFFNESS
(FR) POLYPROPYLÈNE HÉTÉROPHASIQUE AVEC CLTE FAIBLE ET UNE RIGIDITÉ ÉLEVÉE
Abstract
(EN)
Polyolefin composition (PO) comprising (a) a heterophasic propylene copolymer (HECO) comprising (a1) a polypropylene (PP) being the matrix of the heterophasic propylene copolymer (HECO) and (a2) an elastomeric propylene copolymer (E), said heterophasic propylene copolymer (HECO) has an intrinsic viscosity ratio of the xylene cold soluble (XCS) fraction and xylene cold insoluble (XCI) fraction [(XCS)/(XCI)] equal or below 1.6 and (b) more than 150 to equal or below 800 ppm of a nucleating agent (VP) selected from the group consisting of vinylcycloalkane polymers,vinylalkane polymers and mixtures thereof.

(FR)
La présente invention concerne une composition de polyoléfine (PO) comprenant (a) un copolymère de propylène hétérophasique (HECO) comprenant (a1) un polypropylène (PP) étant la matrice du copolymère de propylène hétérophasique (HECO) et (a2) un copolymère de propylène élastomère (E), ledit copolymère de propylène hétérophasique (HECO) a un rapport de viscosité intrinsèque de la fraction soluble dans le xylène froid (XCS) et la fraction insoluble dans le xylène froid (XCI) [(XCS)/(XCI)] égal ou inférieur à 1,6 et (b) plus de 150 à égal ou inférieur à 800 ppm d'un agent de nucléation (VP) choisi dans le groupe constitué de polymères de vinylcycloalcane, polymères de vinylalcane et des mélanges de ceux-ci.