The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 2014
Filed:
Nov. 08, 2011
Pauli Leskinen, Helsinki, FI;
Petar Doshev, Linz, AT;
Cornelia Kock, Pucking, AT;
Borealis AG, Vienna, AT;
Abstract
Heterophasic propylene copolymer (HECO) comprising: (a) a polypropylene matrix comprising: (a) a first propylene homopolymer fraction (PPH1) with a melt flow rate MFR(230° C.) measured according to ISO 1133 in the range of >200 to 500 g/10 min, (a) a second propylene homopolymer fraction (PPH2) with a melt flow rate MFR(230° C.) measured according to ISO 1133 in the range of >30 to ≦200 g/10 min or, (a) a second propylene homopolymer fraction (PPH2) with a melt flow rate MFR(230° C.) measured according to ISO 1133 in the range of >5 to ≦30 g/10 min and, (a) a third propylene homopolymer fraction (PPH3) with a melt flow rate MFR(230° C.) measured according to ISO 1133 in the range of 0.03 to ≦5 g/10 min, if the second propylene homopolymer fraction is fraction (a) or, (a) a third propylene homopolymer fraction (PPH3) with a melt flow rate MFR(230° C.) measured according to ISO 1133 in the range of >30 to ≦200 g/10 min, if the second propylene homopolymer fraction is fraction (a), wherein the polypropylene matrix has a melt flow rate MFR(230° C.) measured according to ISO 1133 in the range of 30 to 500 g/10 min and a xylene cold soluble fraction determined at 23° C. according to ISO 6427 in the range of 0.5 to <2.0 wt %, (b) an elastomeric propylene copolymer dispersed in said matrix, wherein (i) said heterophasic propylene copolymer has a melt flow rate MFR(230° C.) measured according to ISO 1133 in the range of 25 to 200 g/10 min and, (ii) as the amorphous phase (AM) of the cold soluble fraction (XCS) of the heterophasic propylene copolymer has an intrinsic viscosity measured according to ISO 1628-1 (at 135° C. in tetraline) of ≧2.0 dl/g, and a process for its preparation.