Abstract:
The present technology relates to a pre-polymerized catalyst component for the polymerization of olefins, characterized by a non-stereospecific solid catalyst component comprising Ti, Mg and a halogen and an amount of a (co)polymer of an alpha-olefin CH2═CHR1, where R is a C1-C12 hydrocarbon group ranging from 0.1 to 500 g per g of said solid catalyst component. In some embodiments, the (co)polymer is characterized by an isotacticity, expressed in terms isotactic pentads, of higher than 60 molar % and an intrinsic viscosity, measured in tetraline at 135° C., of at least 1.0 dL/g.
Abstract:
A liquid phase process for the polymerization of butene-1 carried out in the presence of a catalyst comprising (a) a solid catalyst component comprising Mg, Ti and an electron donor compound of the following formula (I) in which the R groups, equal to or different from each other, are C1-C10 hydrocarbon groups; (b) an aluminium alkyl cocatalyst and (c) an external electron donor.
Abstract:
A polyolefin composition comprising: A) from 65 wt % to 85 wt %, of a propylene/ethylene/1-butene terpolymer wherein: i) the content of ethylene derived units ranges from 0.6 wt % to 2.5 wt; ii) the content of 1-butene derived units ranges from 6 wt % to 12 wt %; iii) the fraction soluble in xylene at 25° C. ranges from 3.5 wt % to 20 wt %; B) from 15 wt % to 35 wt % of a propylene/ethylene copolymer having a content of ethylene derived units ranging from 10 wt % to 40 wt %; the copolymer optionally can contains 1-butene derived units in an amount less than 1 wt %; the sum A)+B) being 100.
Abstract:
Process for the polymerization of butene-1 carried out in the presence of a catalyst comprising (a) a solid catalyst component comprising Mg, Ti and an electron donor compound of the following formula (I) In which the R groups equal to or different from each other, are C1-C15 hydrocarbon groups, the R1-R2 groups, equal to or different from each other, are hydrogen, halogen or C1-C15 hydrocarbon groups, optionally containing an heteroatom selected from halogen, P, S, N and Si, n and m are integer from 0 to 3 with the proviso that at least one of them is different from 0; (b) An aluminium alkyl cocatalyst and (c) an external electron donor
Abstract:
Polyolefin compositions suitable for injection molded items e.g. for impact bumpers and car interiors comprising from 30% to 90% by weight of an heterophasic propylene polymer composition (A); and from 10% to 70% by weight of a multimodal ethylene/butene-1 copolymer (B); having density from 0.850 to 0.935 g/cm3, total comonomer content from 6% to 30% by weight, Mw/Mn from 4 to 20; intrinsic viscosity in decalin at 135° C. from 1.0 to 4.0 dL/g, and comprising an HDPE fraction (HDPE % wt) up to 30% wt; further comprising from 0 to 50% by weight of a filler (C) and optionally, in amount up to 10% by weight with respect to the overall composition, an impact modifier masterbatch component D consisting of an ultra-soft heterophasic copolymer component.
Abstract:
A propylene polymer composition made from or containing a) from 20 wt % to 44 wt % of a propylene 1-hexene copolymer, containing from 5.0 wt % to 8.3 wt % of 1-hexene derived units, b) from 25 wt % to 45 wt % of a propylene 1-hexene ethylene terpolymer, and c) from 25 wt % to 50 wt % of a propylene ethylene copolymer, wherein the Melt Flow Rate of components a)+b)+c) is from 3.5 to 12.0 g/10 min.
Abstract:
A polyolefin composition made from or containing: (A) 60-95 wt % of a polyolefin component being a mixture of a polypropylene based component and a polyethylene based component and (B) 5-40% a polypropylene composition made from or containing (b1) from 35 to 65% by weight of a polymer fraction made from or containing a propylene homopolymer, or a copolymer containing at least 85% of propylene-derived units, and (b2) from 35 to 65% by weight of a polymer fraction made from or containing a copolymer of ethylene with propylene or CH2═CHR alpha-olefins, wherein the copolymer containing ethylene in an amount from 25 to 40% by weight.
Abstract:
A covering for a light-source made from or containing a polyolefin composition made from or containing:
(A) 50-80% by weight of a propylene polymer made from or containing from 0.1 to 40% by weight of units deriving from ethylene or an alpha-olefin of formula CH2═CHR1, where R1 is a linear or branched C2-C8 alkyl, based on the weight of (A); (B) 15-35% by weight of an elastomeric component selected from the group consisting of:
(B1) ethylene copolymers with an alpha-olefin, (B2) saturated or unsaturated styrene or alpha-methylstyrene block copolymers, and (B3) combinations thereof;
(C) 5-30% by weight of glass fibers; and (D) 0-5.0% by weight of a compatibilizer, wherein the amounts of (A), (B), (C), and (D) are based on the total weight of (A)+(B)+(C)+(D).
Abstract:
A polyolefin composition made from or containing:
T1) 50-90 wt % of a recycled polyolefin mixture; and T2) 10-50 wt % of a polyolefin component containing: A) 5-35% by weight of a propylene homopolymer or a propylene ethylene copolymer; B) 20-50% by weight of a copolymer of ethylene and a C3-C8 alpha-olefin made from or containing 0.1-20% by weight of alpha-olefin units; and C) 30-60% by weight of a copolymer of ethylene and propylene made from or containing 25-75% by weight of ethylene units.
Abstract:
Processes for conversion of propylene polyol feed into useful petrochemical products, including olefin monomers, are described. Such processes comprise: adding a feed stream comprising one or more propylene polyols, hydrogen, and optionally water, to a catalytic conversion reaction zone in the presence of a first solid acid catalyst component and a hydrogenation catalyst component and reacting at a pressure and temperature sufficient to form a first product stream comprising a propanol component. The first product stream can be added to a dehydration reaction zone in the presence of a dehydration catalyst and reacted at a pressure and temperature sufficient to form a second product stream comprising propylene.