Borealis Ag

Simon Schwarzenberger

Jingbo Wang

Markus Gahleitner

Klaus Bernreitner

Ville Virkkunen

Alexander Z Voskoboynikov

Vyatcheslav V Izmer

Luigi Resconi

Georg Grestenberger

Martina Sandholzer

Susanne Kahlen

Dmitry S Kononovich

Noureddine Ajellal

Michael Tranninger

Luigi Maria Cristoforo Resconi

Wilfried Peter Töltsch

Alexander Reznichenko

Gregory Potter

Ismo Lehtiniemi

Wilfried Toeltsch

Peter Wilfried Toltsch

Wilfried Peter TÖLTSCH

Dimitry S Kononovich

The present application relates to a polypropylene (PP) composition comprising a) 50.0 to 95.0 wt.-%, based on the total weight of the polypropylene (PP) composition, of a polypropylene (PP) homopolymer being polymerized in the presence of a single-site catalyst and b) 5.0 to 50.0 wt.-%, based on the total weight of the polypropylene (PP) composition, of a mineral filler, to an article comprising the polypropylene (PP) composition as well as the use of the polypropylene (PP) composition for improving the thermo-mechanical properties.

Filled polypropylene (PP) compositions with improved thermo-mechanical properties

A heterophasic polypropylene copolymer having an MFR2 of 0.05 to 20 g/10 min (ISO 1133 at 230° C. with a loading of 2.16 kg) and a melting point (Tm) of 156 to 164° C. (measured by DSC according to ISO 11357) wherein the heterophasic polypropylene copolymer comprises at least the following components: (A) 55.0 to 95.0 wt % of a crystalline fraction (CF) having a comonomer content of 0 to 3.0 wt %; and (B) 5.0 to 45.0 wt % of a soluble fraction (SF) having a comonomer content of 12 to 45 wt %; wherein the intrinsic viscosity (IV) (in decalin at 135° C.) of the soluble fraction (SF) is 2.5 to 11 dl/g, and wherein the amount of crystalline fraction (CF) and the amount of soluble fraction (SF) are determined in 1,2,4-trichlorobenzene at 40° C.

Heterophasic polypropylene copolymers

A metallocene complex of formula (I): each X is a sigma-ligand; in the group RSi— at least one R is methyl or ethyl, and the other R is selected from methyl, ethyl, n-propyl, isopropyl, n-butyl or isobutyl, pentyl, hexyl, cyclohexyl and phenyl; each Rindependently is the same or can be different and are a CH—Rgroup, with Rbeing H or linear or branched C-alkyl group, Ccycloalkyl group, or Caryl group; each Ris independently a —CH═, —CY═, —CH—, —CHY— or —CY— group, wherein Y is a Chydrocarbyl group and where n is 2-6; each Rand Rare independently the same or can be different and are hydrogen, a linear or branched C-alkyl group, a Carylalkyl, Calkylaryl group, Caryl group, or an —OY group, wherein Y is a is a Chydrocarbyl group; Ris a linear or branched C-alkyl group, Carylalkyl, Calkylaryl group or C-aryl group; and Ris a C(R)group, with Rbeing a linear or branched Calkyl group; (A) wherein at least one Rper phenyl group and at least one Ris not hydrogen, and wherein at least one Rper phenyl group and at least one Ris hydrogen; or (B) wherein one Ris an —OY group, wherein Y is a is a Chydrocarbyl group, in 4 position of each phenyl group and the two other Rgroups are tert-butyl groups; and/or (C) wherein one Ris an —OY group, wherein Y is a is a Chydrocarbyl group, in 4-position of the phenyl ring and the two other Rgroups are tert-butyl groups.

Catalysts

New polypropylene composition which combines low sealing initiation temperature (SIT), low overall migration, good optical properties, like low haze and good retortability, its use and articles made therefrom.

Polypropylene composition

The present invention relates to a heterophasic propylene copolymer polymerized the presence of a single-site catalyst with a low tensile modulus, a process for preparing such a heterophasic propylene copolymer and articles made therefrom.

Heterophasic polypropylene composition with high flexibility and softness

Claimed are metallocene-complexes of formula (I) [formula (I')] wherein M is Hf or Zr, L is a bridge comprising 1-2 C- or Si-atoms, The other variables are as defined in the claims.

A complex of formula (I): (I') M is Hf; each X is a sigma ligand; L is a bridge of formula -(ER)&#x2014;; y is 1 or 2; E is C or Si; each Ris independently a C-C-hydrocarbyl, tri(C-C-alkyl)silyl, C-C-aryl, C-C-arylalkyl or C-C-alkylaryl or L is an alkylene group such as methylene or ethylene; Ar and Ar&#x2032; are each independently an aryl or heteroaryl group optionally substituted by 1 to 3 groups Ror Rrespectively; Rand Rare each independently the same or can be different and are a linear or branched C-C-alkyl group, Carylalkyl, Calkylaryl group or Caryl group with the proviso that if there are four or more Rand Rgroups present in total, one or more of Rand Ris other than tert butyl; Rand Rare the same or are different and are a CH&#x2014;Rgroup, with Rbeing H or linear or branched C-C-alkyl group, Ccycloalkyl group, Caryl group; each R is a &#x2014;CH&#x2014;, &#x2014;CHRx- or C(Rx)- group wherein Rx is Calkyl and where m is 2-6; Ris a linear or branched C-C-alkyl group, Carylalkyl, Calkylaryl group or C-C-aryl group; Ris a C(R)group, with Rbeing a linear or branched C-Calkyl group; and Rand Rare the same or are different and are H or a linear or branched C-C-alkyl group. Invention relates also to a catalyst in solid form comprising (i) a complex of formula (I) and (ii) a cocatalyst of an aluminium compound and (iii) a cocatalyst of a boron compound. 

Growing community of inventors

Linz, Austria

Simon Schwarzenberger