Abstract:
Adducts are provided comprising MgCl 2 , ethanol and a Lewis base (LB), said compounds being present in molar ratios defined by the following formula MgC1 2 •(EtOH) n (LB) p in which n is from 2 to 6 and p has values satisfying the following equation p/(n+p)≤0.1. The said adducts can be used as precursor in the preparation of high activity ZN catalysts.
Abstract:
A propylene polymer composition comprising the following components: a) from 50% to 90% by weight of a propylene homopolymer or a propylene copolymer containing up to 5% by mol of derived units of C2-C20 alpha-olefins, having the following features: (i) a polydispersity index PI>3; (ii) melt flow rate (MFR), as measured at 230°C under a load of 2.16 kg, MFR>1 dg/min; and (iii) fraction soluble in xylene at 25°C (XSRT)>1% b) from 5% to 25% by weight a copolymer of ethylene and one or more derived units of C4-C20 alpha-olefins having the following features: (i) content of ethylene derived units higher than 50% by mol and lower than 92% by mol; (ii) intrinsic viscosity (IV) higher than 1.2 dL/g and lower than 6 dL/g; (iii) density ranging from 0.850 to 0.890 g/cm 3 ; and (iv) a crystallinity content, expressed as the enthalpy of fusion, lower than 62 J/g c) from 5% to 25% by weight of a copolymer of propylene and ethylene having the following features: (i) content of propylene derived units higher than 50% by mol and lower than 92% by mol; (ii) intrinsic viscosity (IV) higher than 2 dL/g and lower than 6 dL/g; (iii) density ranging from 0.850 to 0.890 g/cm3; (iv) the value of the product of reactivity ratios rlxr2 lower than 2; and (v) a crystallinity content, expressed as the enthalpy of fusion, lower than 45 J/g wherein the weight ratio between the ethylene copolymer (component b) and the sum of component b) and component c) is equal to or higher than 0.5 and less than or equal to 0.9.
Abstract:
Engineering thermoplastic compositions containing oxidized olefin polymer dispersing agents for additives comprising: A.about 0.5 wt% to about 90.0 wt% of an oxidized olefin polymer material or an ionomer of the oxidized olefin polymer material; B. about 0.25 wt% to about 75.0 wt% of an additive chosen from colorants, halogenated flame retardants, conductive carbon black, anti-microbial agents, anti-acids and mixtures thereof; and C. about 1.0 wt% to about 99.0 wt% of an engineering thermoplastic; wherein the sum of components A + B+ C is equal to 100 wt%.
Abstract translation:包含用于添加剂的氧化烯烃聚合物分散剂的工程热塑性组合物,其包含:约0.5重量%至约90.0重量%的氧化烯烃聚合物材料或氧化烯烃聚合物材料的离聚物; B.约0.25重量%至约75.0重量%的选自着色剂,卤化阻燃剂,导电炭黑,抗微生物剂,抗酸剂及其混合物的添加剂; 和约1.0重量%至约99.0重量%的工程热塑性塑料; 其中组分A + B + C的总和等于100重量%。
Abstract:
A process for making visbroken olefin polymers with low level of byproducts by using a reactive, peroxide-containing olefin polymer material comprising: a) preparing an olefin polymer mixture comprising: I. about 0.5 to about 90.0% by weight of a reactive, peroxide-containing olefin polymer material (A); and II. about 10.0 to about 99.5% by weight of an olefin polymer material (B); b) extruding or compounding in molten state the olefin polymer mixture, thereby producing a melt mixture; and optionally c) pelletizing the melt mixture.
Abstract:
A process for making crosslinked olefin polymers with low level of by products by using a reactive, peroxide-containing olefin polymer material comprising: a) preparing an olefin polymer mixture which comprises: I. about 0.5 wt% to about 20.0 wt% of a reactive, peroxide-containing olefin polymer material (A); and II. about 80.0 wt% to about 99.5 wt% of an ethylene polymer material (B); b) extruding or compounding in molten state the olefin polymer mixture, thereby producing a melt mixture; and optionally c) pelletizing the melt mixture after it is cooled.
Abstract:
A process for preparing a catalyst component, comprising a Mg compound a Ti compound and an electron donor compound (ED) selected from alcohol, glycols, esters, ketones, amines, amides, nitriles, alkoxysilanes and aliphatic ethers as essential compounds, comprising two or more steps of reaction involving the use of at least one of said essential compounds as fresh reactant alone or in a mixture in which it constitutes the main component, said process being characterized by the fact that in the last of said one or more reaction steps the essential compound used as a fresh reactant is the ED compound.
Abstract:
A nanocomposite composition having improved mechanical properties containing, A. about 5 to about 20 wt% of a compatibilizing dispersant chosen from an olefin polymer peroxide, an ionomer of an olefin polymer peroxide, a grafted olefin polymer peroxide, and mixtures thereof; B. about 1 to about 15 wt% of a smectite clay; and C. about 65 to about 94 wt% of an olefin polymer material; wherein the sum of components A + B+ C is equal to 100 wt%.
Abstract translation:一种具有改进的机械性能的纳米复合材料组合物,其含有约5至约20重量%的选自烯烃聚合物过氧化物,烯烃聚合物过氧化物离聚物,接枝烯烃聚合物过氧化物及其混合物的相容性分散剂; B.约1至约15重量%的绿土粘土; 和约65至约94重量%的烯烃聚合物材料; 其中组分A + B + C的总和等于100重量%。
Abstract:
The present invention relates to MgCl 2 .(EtOH), m (ROH) n (H 2 0) p adduct in which R is a Cl-C15 hydrocarbon group different from ethyl, n and m are indexes, higher than 0, satisfying the equations (n+m) ≥.7 and 0.05 ≤n/(n+m) ≤0.95 and p is a number ranging from 0 to 0.7 with the proviso that when R is methyl and (n+m) is in the range of 0.7 to 1, the value of n/(n+m) ranges from 0.05 to 0.45. The catalyst components obtained from the adducts of the present invention are capable to give catalysts for the polymerization of olefins characterized by enhanced activity with respect to the catalysts prepared from the adducts of the prior art.
Abstract:
The present invention relates to a solid catalyst component for the polymerization of olefins CH 2 =CHR in which R is hydrogen or a hydrocarbon radical with 1-12 carbon atoms, comprising Mg, Ti, halogen and an electron donor selected from succinates, said catalyst component being obtainable by a process comprising the following steps: (a) dissolving a halide of magnesium in a solvent system comprising an organic epoxy compound or an organic phosphorus compound and optionally an inert diluent to form a solution; (b) mixing the obtained solution with a titanium compound to form a mixture; (c) precipitating a solid from the mixture obtained in step (b) in the presence of a succinate and/or an auxiliary precipitant; (d) if a succinate is not used in step (c), contacting the solid obtained in (c) with a succinate, and (e) treating the solid obtained in (c) or (d) with a titanium compound optionally in the presence of an inert diluent.