Filled polypropylene (pp) compositions with improved thermo-mechanical properties
AssigneeBorealis AG
InventorsJingbo Wang, Simon Schwarzenberger, Klaus Bernreitner, Markus Gahleitner, Ville Vurkkunen
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AssigneeBorealis AG
InventorsJingbo Wang, Simon Schwarzenberger, Klaus Bernreitner, Markus Gahleitner, Ville Vurkkunen
Estimating the term…
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.
Polypropylene (PP) composition comprising
The polypropylene (PP) composition according to any one of the preceding claims, wherein the polypropylene (PP) homopolymer has
The polypropylene (PP) composition according to any one of the preceding claims, wherein the polypropylene (PP) homopolymer has a flexural modulus measured according to ISO 178 of at least 1300 MPa, preferably in the range from 1300 to 2200 MPa.
The polypropylene (PP) composition according to any one of the preceding claims, wherein the mineral filler is an anisotropic mineral filler, preferably a mineral filler selected from the group comprising talc, wollastonite, mica, montmorillonite, magnesium sulfate, magnesium hydroxide, halloysite and mixtures thereof.
The polypropylene (PP) composition according to any one of the preceding claims, wherein the mineral filler has a particle size d50 in the range from 0.1 to 10 μm, preferably in the range from 0.2 to 6.0 μm, more preferably in the range from 0.3 to 4.0 μm.
The polypropylene (PP) composition according to any one of the preceding claims, wherein the polypropylene (PP) composition further comprises a nucleating agent in an amount in the range from 0.002 to 1.5 wt.-%, based on the total weight of the polypropylene (PP) composition.
The polypropylene (PP) composition according to any one of the preceding claims, wherein the polypropylene (PP) composition has
The polypropylene (PP) composition according to any one of the preceding claims, wherein the polypropylene (PP) composition has a ratio of melting temperature (Tm) measured by differential scanning calorimetry (DSC) to heat deflection temperature (HDT) measured according to ISO 75 A [Tm/HDT] of ≤2.0.
Article comprising the polypropylene (PP) composition according to any one of the preceding claims.
Dependencies are inferred from the claim text.