Abstract:
The present invention relates to interior parts of a car comprising a new propylene resin composition. The present resin composition has good molding abilities and a good balance of physical properties as well as a good appearance, lower gloss and scratch resistance. Specifically, the present invention relates to a molded article for interior parts of a car comprising a polypropylene resin composition comprising the following components; a crystalline homopolypropylene having MFR of 500 to 3,000 g/10 min.; a polypropylene consisting of a crystalline homopolypropylene and an ethylene-propylene copolymer rubber having 45 to 80% by mass of a ethylene content; a polypropylene consisting of a crystalline homopolypropylene and an ethylene-propylene copolymer rubber having 25% by mass or more to below 45% by mass of a ethylene content; and an ethylene-null-olefin copolymer rubber.
Abstract:
The invention is directed to a plasticized polypropylene thermoplastic composition comprising a blend of A) from 50 to 99.9 wt % of a thermoplastic polymer derived from polypropylene, optionally with one or more copolymerizable monomer selected from C2-C10 null-olefin or diolefin, said polymer having a melt flow rate (MFR) (ASTM D1238) of from 0.5 to 1000 and a crystallinity by differential scanning calorimetry of from 0 to 70%; B) from 0.1 to 50 wt % of at least one ethylene copolymer having a weight-average molecular weight (Mw) (GPC) of from 500 to 10,000, a molecular weight distribution (MWD) (GPC) of from greater than 1.5 to less than or equal to 3.5, and a comonomer content of from greater than or equal to 20 mol % to less than 70 mol %; and optionally, C) from 0 to 20 wt % of a thermoplastic polypropylene modifier compound other than that of B).
Abstract:
Disclosed are injection molded automotive articles comprising a coupled propylene polymer composition and optionally a thermoplastic elastomer, a thermoplastic polymer and a filler.
Abstract:
A curable, water-based coating composition comprising a reaction product of: a copolymer comprising a free-radical polymerization product of: a first block comprising a reaction product of: a plurality of ethylenically unsaturated monomers, and a vinyl aromatic hydrocarbon monomer, wherein at least one monomer of the plurality of ethylenically unsaturated monomers includes a functional group that can react with a water-dispersible cross-linking agent, and at least one monomer of the plurality of ethylenically unsaturated monomers is present in an amount such that it can render the copolymer water dispersible, and a second block comprising a reaction product of at least one ethylenically unsaturated monomer, wherein at least a portion of which are non-functional, and a water-dispersible cross-linking agent, wherein the water-based copolymer is free of salt structures.
Abstract:
Disclosed is a resin composition that comprises a propylene-based copolymer (X) consisting of two kinds of copolymeric components made up of propylene, null-olefin and optionally ethylene which are characterized by ethylene content and null-olefin content, the copolymer (X) exhibiting a specific endothermic behavior in DSC measurement; a crystalline olefin-based polymer (Z) having a melting point up to 115null C.; and optionally a copolymer (Y) made up of propylene and null-olefin and/or ethylene. The resin composition can be modified by addition of a propylene-based polymer (W) and/or a nucleating agent (N) and can yield a film superior in low-temperature heat sealability and antiblocking property.
Abstract:
The present invention provides a polymer blend suitable for use as a film or a coating, the polymer blend including from 1 to 99% by weight of a metallocene-produced VLDPE polymer having a density less than 0.916 g/cm3, and from 1 to 99% by weight of an LDPE polymer having a density of from 0.916 to 0.928 g/cm3 wherein the sum of (a) and (b) is 100%. The VLDPE polymer can have a melt index of from 6 to 15 dg/min, or from 9 to 12 dg/min. The present invention further provides polymeric films extrusion cast from such polymer blends, and articles having a flexible substrate and a polymeric film extrusion-coated on the substrate
Abstract translation:本发明提供一种适合用作膜或涂层的聚合物共混物,所述聚合物共混物包括1至99重量%的茂金属生产的密度小于0.916g / cm 3的VLDPE聚合物, 1至99重量%的密度为0.916至0.928g / cm 3的LDPE聚合物,其中(a)和(b)的总和为100%。 VLDPE聚合物的熔体指数可以为6至15dg / min,或9至12dg / min。 本发明进一步提供了由这种聚合物共混物挤压成型的聚合物膜,以及具有柔性基材和挤出涂布在基材上的聚合物膜的制品
Abstract:
Disclosed herein is a thermoplastic olefin composition, comprising, based on the total weight of the composition: about 20 wt % to about 40 wt % polypropylene; about 20 wt % to about 70 wt % ethylene copolymer; and less than or equal to about 30 wt % linear low density polyethylene, a process of forming the thermoplastic olefin composition, a process for vacuum forming an article comprising the composition, an article of manufacture comprising the composition, and an automotive assembly comprising, based on the total weight of the assembly: about 20 to about 40 wt % polypropylene; about 20 to about 70 wt % ethylene copolymer; and less than or equal to about 30 wt % linear low density polyethylene.
Abstract:
The invention provides a polyethylene composition comprising a melt blend of (i) a bimodal high molecular weight high density polyethylene resin having a NCTL stress crack resistance of about 200 hours or greater, and (ii) a high density polyethylene resin selected from the group consisting of a homopolymer high density polyethylene resin, a copolymer high density polyethylene resin, and mixtures thereof, wherein the composition has a minimum NCTL stress crack resistance of 24 hours. In another embodiment, a polyethylene composition comprises a melt blend of the bimodal high molecular weight high density polyethylene resin and a linear low density polyethylene resin. The bimodal high molecular weight high density polyethylene resin can be a commodity film grade resin, the homopolymer and copolymer resins can be milk bottle grade and detergent bottle grade, respectively, and the linear low density polyethylene resin can be a film grade. The compositions are especially useful for manufacture of profile and corrugated pipe and/or pipe fitting applications, and chemical waste applications including sanitary sewer or irrigation piping systems.
Abstract:
A polyolefin composition suitable for preparing single ply roofing membranes, comprising: (A) from about 15 to about 40% by weight of a crystalline copolymer of propylene with at least one alpha-olefin of formula H2CnullCHR1, where R1 is H or a C2null8 linear or branched alkyl, containing at least about 90% by weight of propylene, having solubility in xylene at room temperature lower than about 15% by weight; (B) from about 60 to about 85% by weight of an elastomeric fraction comprising: (1) a copolymer of propylene with ethylene containing about 20 to about 35% by weight ethylene, and having solubility in xylene at room temperature greater than about 70% by weight, the intrinsic viscosity of the xylene soluble fraction being higher than about 3.0 dl/g up to about 6.0 dl/g; and (2) a copolymer of ethylene with at least one alpha-olefin of formula H2CnullCHR2, where R2 is a C2null8 linear or branched alkyl, containing about 15% to 40% by weight alpha-olefin, and having solubility in xylene at room temperature greater than about 25% by weight, the intrinsic viscosity of the xylene soluble fraction ranging from about 0.5 to about 5.0 dl/g; the (1)/(2) weight ratio ranging from about 1:5 to about 5:1. The polyolefin composition of the invention, preferably prepared by sequential polymerization in at least three stages, has tensile strength at break null25 MPa, elongation at break null700 MPa and toughness null150 MPa.
Abstract:
The present invention provides a thermoplastic resin composition comprising (a) 100 parts by weight of a resin selected from the group consisting of polypropylenes and copolymers composed mainly of propylene, (b) 5 to 350 parts by weight of a resin selected from the group consisting of polyethylenes and copolymers composed mainly of ethylene, the resin having been prepared using a single site catalyst, and (c) 5 to 200 parts by weight of an ionomer resin or its ester. The present thermoplastic resin composition is excellent in mechanical properties and heat bonding property to various resins, and causes no bleeding-out of softening agents, thereby the softness of the shaped articles obtained from the composition can be easily controlled. The present invention also provides a laminated article comprising a layer of the resin composition .