Abstract: The present invention relates to a polymer composition, comprising—a polyolefin, —a stericallyhindered phenol of the following formula (I), wherein the groups X, which can be the same or different, have the following formula (II), wherein R1 and R4, which can be the same or different, are an alkyl group having from 1 to 8 carbon atoms; R2, R3, R5, and R6, which can be the same or different, are hydrogen or an alkyl group having from 1 to 8 carbon atoms, —a hydrotalcite and/or bis(2,4-dicumylpheny)pentaerythritol diphosphite.

Abstract: The invention relates to novel propylene polymers with improved properties especially with improved stiffness and impact strength comprising propylene homopolymers or propylene block copolymers with 90.0 to 99.9 wt % propylene and 0.1 to 10 wt % ?-olefins with 2 or 4 to 18 carbon atoms, or mixtures thereof, wherein the propylene homopolymers or propylene block copolymers are ?-nucleated propylene polymers, whereby the ?-nucleated propylene homopolymers have an IR??0.98, a tensile modulus ?1500 MPa at +23° C. and a Charpy impact strength, ?3 kJ/m2 at ?20° C. using notched test specimens, and the ?-nucleated propylene block copolymers are polymers having an IR? of the propylene homopolymer block of ?0.98, a tensile modulus ?1100 Mpa at +23° C. and a Charpy impact strength of ?6 kJ/m2 at ?20° C. using notched test specimens.

Abstract: The invention relates to a coloured ?-nucleated polypropylene composition having a high content of ?-modification, wherein the polypropylene composition comprises at least one ?-nucleating agent and an inorganic blue pigment and an inorganic yellow pigment.

Abstract: Polypropylene composition comprising a propylene homopolymer (A) and a random propylene-butene copolymer (B) or a random propylene-ethylene copolymer (B?) wherein the polypropylene composition is ?-nucleated.

Abstract: The invention relates to a novel process for producing coloured polypropylene compositions having a high content of ?-modification, wherein polypropylene is melt blended with at least one inorganic pigment and at least one ?-nucleating agent, wherein a1) polypropylene is melt blended with at least one inorganic pigment or with a first concentrate comprising the at least one inorganic pigment to obtain a coloured polypropylene and a2) the coloured polypropylene is melt blended with at least one ?-nucleating agent or with a second concentrate comprising the at least one ?-nucleating agent to obtain the coloured ?-nucleated polypropylene composition or b1) polypropylene is melt blended with at least one ?-nucleating agent or with a second concentrate comprising the at least one ?-nucleating agent to obtain a ?-nucleated polypropylene and b2) the ?-nucleated polypropylene is melt blended with at least one inorganic pigment or with a first concentrate comprising the at least one inorganic pigment to obtain the col

Abstract: Heterophasic propylene copolymer (HECO) comprising wherein the heterophasic propylene copolymer (HECO) is ?-nucleated and the elastomeric phase has an intrinsic viscosity measured in tetraline at 135° C. of equal or below 4.0 dl/g.

Abstract: A pressure pipe with increased long-term pressure resistance is comprised of a polypropylene composition. The polypropylene composition is comprised of a polyproyplene copolymer which is at least partially crystallised in the ?-modification.

Abstract: The present invention concerns a propylene copolymer composition, a molded article comprising the composition and the use of the propylene copolymer composition for preparing molded articles, preferably pipes.

Abstract: The invention relates to filled propylene compositions especially for pipes and pipe systems having increased impact and stiffness properties especially increased long term properties.

Abstract: A pressure pipe with increased long-term pressure resistance is comprised of a polypropylene composition. The polypropylene composition is comprised of a polyproyplene copolymer which is at least partially crystallised in the ?-modification.

Abstract: The invention relates to novel propylene polymers with improved properties especially with improved stiffness and impact strength comprising propylene homopolymers or propylene block copolymers with 90.0 to 99.9 wt % propylene and 0.1 to 10 wt % &agr;-olefins with 2 or 4 to 18 carbon atoms, or mixtures thereof, wherein the propylene homopolymers or propylene block copolymers are &bgr;-nucleated propylene polymers, whereby the &bgr;-nucleated propylene homopolymers have an IR&tgr;≧0.98, a tensile modulus ≧1500 MPa at +23° C. and a Charpy impact strength, ≧3 kJ/m2 at −20° C. using notched test specimens, and the &bgr;-nucleated propylene block copolymers are polymers having an IR&tgr; of the propylene homopolymer block of ≧0.98, a tensile modulus ≧1100 Mpa at +23° C. and a Charpy impact strength of ≧6 kJ/m2 at −20° C. using notched test specimens.