Abstract:
A copolymer of 1-butene and at least a C8-C12 alpha-olefin derived units, preferably at least 1-octene derived units, containing from 0% to 2% by mole of propylene or pentene, having a content of C8-C12 alpha-olefin derived units higher than 0.2% and lower than 7.2% by mole; endowed with the following features: a) the melting point measured by DSC (TmII) and the C8-C12 alpha-olefin molar content fulfil the following relationship: 0
Abstract:
A process for preparing crystalline ethylene (co)polymers comprising (co)polymerizing ethylene in the presence of carried out in the presence catalyst system comprising (a) a solid catalyst component comprising Ti, Mg, halogen, ORI groups, where RI is a C1-C12 hydrocarbon group optionally containing heteroatoms, having ORI/Ti molar ratio of at least 0.5, an amount of titanium, with respect to the total weight of said solid catalyst component, higher than 4% by weight, and showing a specific pattern of the SS-NMR; and (b) an aluminum alkyl compound as a cocatalyst. The process allows to obtain in good yields ethylene polymers with narrow MWD.
Abstract:
The present invention relates to a modular-design drum composed of a plurality of geometrically differently or equally shaped individual components, which are first fabricated as separate parts from a thermoplastic polymer and thereafter the components are assembled to the drum, wherein at least one of the components is at least partly laminated with an intermediate layer and a decorative layer, with an intermediate layer and a heat-cured outer layer or with an intermediate layer, a decorative layer and a heat-cured outer layer and to processes for the production of the modular-design drum, and to its use as inner part of tumbler dryers, washing machines, or spin-dryers.
Abstract:
A membrane comprising a base layer (A) and a top layer (B), where the base layer (A) comprises a heterophasic composition (I) containing the following polymer components, all percent amounts being by weight: a) 10-40% of a propylene homopolymer, or copolymer containing over 85% of propylene, and having a fraction insoluble in xylene at room temperature greater than 80%; and b) 60-90% of one or more α-olefin/ethylene copolymers containing less than 40% of ethylene and having solubility in xylene at room temperature greater than 70%; the amounts of (a) and (b) being referred to the total weight of (a) and (b); and the top layer (B) comprises one or more of a homopolymer and copolymer(s) of propylene containing from 65 to 99% by weight of propylene; said top layer (B) being at least partially bonded to the base layer (A).
Abstract:
Thermoset polyolefin elastomer obtained by static curing with water a silane-grafted thermoplastic heterophasic polyolefin composition (I) having a flexural modulus equal to or lower than 150 MPa, and comprising: (a) a crystalline propylene homopolymer or copolymer of propylene with up to 15% by weight of ethylene or other alpha-olefin comonomer(s), or their combinations, and (b) a copolymer or a composition of copolymers of ethylene with other alpha-olefins containing from 15% by weight to less then 40% by weight of ethylene; said thermoset polyolefin elastomer having a compression set value of from 30 to 65%, a ratio of elongation at break to compression set values of above 8, and hardness shore A values below 90.
Abstract:
An olefin polymer composition comprising (by weight, unless otherwise specified): A) 60-85% of a crystalline propylene homopolymer or a crystalline copolymer of propylene containing 3% or less of ethylene or C4-C10 α-olefin(s) or of combinations thereof, said homopolymer or copolymer having a Polydispersity Index (P.I.) value of from 4.5-6 and a content of isotactic pentads (mmmm), measured by 13C NMR on the fraction insoluble in xylene at 25° C., higher than 96%; B) 15-40% of a partially amorphous copolymer of ethylene containing from 35% to 70% of propylene or C4-C10 α-olefin(s) or of combinations thereof, and optionally minor proportions of a diene. The said olefin polymer composition exhibits a value of elongation at break ranging from 150 to 600% according to ISO method 527.
Abstract:
Catalyst precursors comprising Mg, Cl, Ti, and OR groups that are in molar ratios defined by the formula MgClnTip(OR)(2-n)+4p in which n is from 0.3 to less than 1.7, p is lower than 0.6, the molar ratio (OR)/Cl is lower than 4 and R is C1-C15 hydrocarbon groups. The said precursor, just upon activation with organo-Al compounds, are able to advantageously polymerize ethylene and alpha olefins, and that upon reaction with halogenating compounds generate in high yields catalyst components with high polymerization activity particularly in the polymerization of propylene also in combination with 1,3-diethers.
Abstract:
Polypropylene compositions having a MFR value (2.16 kg, 230° C.) from 15 to 200 g/10 min., comprising: A) a propylene polymer or polymer composition selected from propylene homopolymers or copolymers of propylene containing up to 5% by moles of comonomer(s), said homopolymers and copolymers having values of MFR, obtained without degradation treatments, from 500 to 2500 g/10 min., or combinations of the said homopolymers or copolymers; B) a filler or pigment, or their combinations; and optionally C) from 0.5 to 5% by weight, with respect to the total weight of A), B) and C), of a compatibilizer.
Abstract:
The polymeric composition of the present invention is a polyolefin composition comprising (percent by weight): 1) 10-60% of a copolymer of propylene and hexene-1 wherein said copolymer comprises from 0.2 to 10% of recurring units derived from hexene-1; and 2) 10-85% of a propylene polymer selected from propylene homopolymer and a polymer of propylene with 0.1-10% of an α-olefin selected from ethylene, a C4-C10 a-olefin, hexene-1 excluded, and a mixture thereof, said propylene polymer being insoluble in xylene at ambient temperature in an amount over 85% and having a Polydispersity Index ranging from 3 to 20; and 3) 5-30% of a copolymer of ethylene with a C3-C10 α-olefin and optionally a diene, having an ethylene content ranging from 15 to 60% and an intrinsic viscosity value of at least 1 dl/g. Pipe systems and sheets produced from said composition show an optimal balance of mechanical properties.
Abstract:
A multilayer laminated material which comprises at least one layer of glass and which has improved thermal stability is distinguished in that it comprises a lower substrate layer of a plastic, a metal or a combination of plastic and metal, an intermediate layer arranged thereon and comprising a soft material or comprising a thermoplastic, a further fibrous intermediate layer comprising plastic, which is provided with a solvent-free adhesive material, and a top layer of glass. The multilayer laminated material is suitable for the installation of glass elements in the area of the electrical, the electronics and the automotive industry and for other industrial applications.