Disclosed are a polypropylene-based resin composition comprising 5 to 47 parts by mass of a propylene-based polymer (A) having an MFR of 50 to 150 g/10 min and an amount of a decane-soluble part of 6% by mass or more, 0 to 30 parts by mass of a propylene homopolymer (B) having an MFR of 10 to 500 g/10 min, 23 to 30 parts by mass of an ethylene--olefin copolymer (C) which is a random copolymer composed of ethylene and an -olefin having 4 to 8 carbon atoms, and has a density of 0.850 to 0.890 g/cm.sup.3 and an MFR of 0.5 to 30 g/10 min, and 30 to 40 parts by mass of an inorganic filler (D) having an average particle size of over 3.0 m and less than 5.0 m [the total amount of the components (A) to (D) is 100 parts by mass]; and an automobile exterior member obtained by injection-molding or press-molding the composition.

Disclosed is a polypropylene with an MFR of at least 20 g/10 min comprising a homopolypropylene and optionally within a range from 2 wt % to 30 wt % of an propylene--olefin copolymer by weight of the polypropylene; wherein the homopolypropylene has a MFR within a range from 30 g/10 min to 200 g/10 min, an Mw/Mn within a range from 7 to 16, and comprising 1.1 wt % or less atactic polypropylene based on the total weight of the homopolypropylene and atactic polypropylene, where the propylene--olefin copolymer has within a range from 30 wt % to 50 wt % -olefin derived units by weight of the propylene--olefin copolymer, and an intrinsic viscosity within a range from 4 to 8 dL/g. The impact copolymer may be obtained by combining a Ziegler-Natta catalyst having at least two different internal electron donors with propylene in reactors in series to produce the homopolypropylene followed by a gas phase reactor to produce a propylene--olefin copolymer.

Disclosed is a polypropylene with an MFR of at least 20 g/10 min comprising a homopolypropylene and optionally within a range from 2 wt % to 30 wt % of an propylene--olefin copolymer by weight of the polypropylene; wherein the homopolypropylene has a MFR within a range from 30 g/10 min to 200 g/10 min, an Mw/Mn within a range from 7 to 16, and comprising 1.1 wt % or less atactic polypropylene based on the total weight of the homopolypropylene and atactic polypropylene, where the propylene--olefin copolymer has within a range from 30 wt % to 50 wt % -olefin derived units by weight of the propylene--olefin copolymer, and an intrinsic viscosity within a range from 4 to 8 dL/g. The impact copolymer may be obtained by combining a Ziegler-Natta catalyst having at least two different internal electron donors with propylene in reactors in series to produce the homopolypropylene followed by a gas phase reactor to produce a propylene--olefin copolymer.

The present disclosure provides a solid catalyst component obtainable by a process including: (a) a first step in which Ti(OEt).sub.4, is reacted with a Mg based compound of formula MgCl.sub.n(OR.sup.I).sub.2-n, where n is from about 0.5 to about 1.5, R.sup.I is a C.sub.1-C.sub.10 alkyl groups, the Ti(OEt).sub.4 and the Mg compound are used in amounts such that the Ti/Mg molar ratio is of about 0.2 to about 0.4, the reaction temperature is about 110 to about 130 C., and the reaction time is about 2 to about 5 hours; and (b) a subsequent step in which the product obtained in step (a) is reacted with a Ti compound of the formula Ti(OR.sup.I).sub.4-yCl.sub.y, where y is a number between 3 and 4.

The present disclosure provides a solid catalyst component obtainable by a process including: (a) a first step in which Ti(OEt).sub.4, is reacted with a Mg based compound of formula MgCl.sub.n(OR.sup.I).sub.2-n, where n is from about 0.5 to about 1.5, R.sup.I is a C.sub.1-C.sub.10 alkyl groups, the Ti(OEt).sub.4 and the Mg compound are used in amounts such that the Ti/Mg molar ratio is of about 0.2 to about 0.4, the reaction temperature is about 110 to about 130 C., and the reaction time is about 2 to about 5 hours; and (b) a subsequent step in which the product obtained in step (a) is reacted with a Ti compound of the formula Ti(OR.sup.I).sub.4-yCl.sub.y, where y is a number between 3 and 4.

A polyethylene composition having the following features: 1) density from about 0.945 to about 0.955 g/cm.sup.3, determined according to ISO 1183 at 23 C.; 2) ratio MIF/MIP from about 23 to about 40; 3) MIF from about 8.5 to about 18 g/10 min.; 4) HMWcopo index from about 3.5 to about 20; and 5) long-chain branching index, LCBI, equal to or greater than about 0.45. The polyethylene composition can be used to produce pipes and films.

A polyethylene composition having the following features: 1) density from about 0.945 to about 0.955 g/cm.sup.3, determined according to ISO 1183 at 23 C.; 2) ratio MIF/MIP from about 23 to about 40; 3) MIF from about 8.5 to about 18 g/10 min.; 4) HMWcopo index from about 3.5 to about 20; and 5) long-chain branching index, LCBI, equal to or greater than about 0.45. The polyethylene composition can be used to produce pipes and films.

A catalyst for the homopolymerization or copolymerization of CH.sub.2CHR olefins, made from or containing the product obtained by contacting: (i) a solid catalyst component made from or containing Ti, Mg, Cl, and an internal electron donor compound, wherein the solid catalyst component contains from about 0.1 to about 50 wt % of Bi, based upon the total weight of the solid catalyst component; (ii) an alkyl aluminum compound and, (iii) an external electron donor compound having the formula:
(R1)aSi(OR2)b
wherein R.sup.1 and R.sup.2 are independently selected from the group consisting of alkyl radicals with 1-8 carbon atoms and a is 0 or 1 and a+b=4.

A catalyst for the homopolymerization or copolymerization of CH.sub.2CHR olefins, made from or containing the product obtained by contacting: (i) a solid catalyst component made from or containing Ti, Mg, Cl, and an internal electron donor compound, wherein the solid catalyst component contains from about 0.1 to about 50 wt % of Bi, based upon the total weight of the solid catalyst component; (ii) an alkyl aluminum compound and, (iii) an external electron donor compound having the formula:
(R1)aSi(OR2)b
wherein R.sup.1 and R.sup.2 are independently selected from the group consisting of alkyl radicals with 1-8 carbon atoms and a is 0 or 1 and a+b=4.

The present disclosure provides an article of manufacture made from or containing a propylene-based terpolymer, having (i) ethylene-derived units in the range from about 0.5 wt. % to about 1.8 wt. %; (ii) 1-butene-derived units in the range from about 1.5 wt. % to about 2.5 wt. %; (iii) a ratio of C.sub.2 wt %/C.sub.4 wt % in the range from about 0.40 to about 0.80, wherein C.sub.2 wt % is the weight percent of ethylene-derived units and C.sub.4 wt % is the weight percent of 1-butene-derived units; (iv) a melt flow rate in the range from about 30 g/10 min to about 80 g/10 min; (v) a xylene soluble fraction at 25 C. lower than about 5.0 wt. %; and (vi) a melting point higher than about 140 C. The article can be a container, which can be used for food applications.