Abstract:
Polymer compositions and films are provided. The polymer compositions include (A) 10-50 wt % heterogeneously branched Ziegler-Natta-catalyzed LLDPE polymer having a composition distribution breadth index (CBDI)
Abstract:
A polyethylene composition including the product of the combination of at least one copolymer made from units derived from at least 85 wt % ethylene and a C3 to C10 α-olefin and from 0.10 wt % to 10 wt % of a cyclic-diene terpolymer is provided.
Abstract:
This invention relates to blends of polyalphaolefins (PAOs) and polyhydrosilane-modified polyolefins, methods to prepare the blends and methods to prepare polyhydrosilane-modified polyolefins.
Abstract:
Disclosed herein is a process to form a dynamically vulcanized thermoplastic elastomer film, also referred to as the DVA film, directly from a DVA raw material. The process comprises the steps of: 1) forming a thermoplastic elastomeric material melt comprising an elastomer and a thermoplastic resin in a first mixer under conditions such that the thermoplastic elastomeric material is dynamically vulcanized; 2) passing the thermoplastic elastomeric material melt formed in the first mixer through a second mixer to form a uniformed melt; and 3) passing the thermoplastic elastomeric material melt exiting from the second mixer through a film die to form a thermoplastic elastomer material film.
Abstract:
Polymer compositions including (A) 15.0 to 90.0 wt % of a heterogeneously branched ethylene polymer having polymer units derived from at least one C3-C20 alpha-olefin and having a CBDI
Abstract:
A crack-resistant article comprising a diene terpolymer, the diene terpolymer comprising (or consisting essentially of) from 0.01 wt % to 10.0 wt % diene derived units, and 1.0 wt % to 20 wt % of C4 to C10 α-olefin derived units based on the weight of the diene terpolymer, wherein the diene terpolymer: a) has a g′vis of less than 0.90; b) has an Mw within a range of from 100,000 g/mol to 500,000 g/mol; c) has an Mw/Mn within the range of from 3.5 to 12.0; and d) an Mz/Mn of greater than 7.0. Inventive articles comprise a blend of a relatively high density linear polyethylene and the diene terpolymer.
Abstract:
Polymer compositions that include an ethylene-based polymer and a broad molecular weight distribution propylene-based polymer having a melt strength of 20.0 cN to 200.0 cN; and optionally, a propylene-based elastomer are described. The invention also includes articles, such as films, produced from such compositions and methods of making such compositions and methods of improving melt strength.
Abstract:
The present invention relates to a cast film comprising a composition comprising more than 25 wt % (based on the weight of the composition) of one or more linear ethylene polymers having a g′vis of 0.97 or more and an Mw of 20,000 g/mol or more and at least 0.1 wt % of a branched modifier where the modifier has a) a g′vis of 0.90 or less; b) an Mw of 100,000 g/mol or more; c) an Mw/Mn of 3.0 or more; d) an Mz/Mn of 7.0 or more; e) a shear thinning ratio of 40 or more; and f) an I21 of 20 dg/min or less; where the film has at least a 10% reduction in neck-in as compared to the same composition formed into a film under the same conditions, except that the branched modifier is absent.
Abstract:
This invention relates to a film comprising a blend composition comprising: 1) a linear ethylene containing polymer, such as a LLDPE, a HDPE or the like; and at least 1 weight percent of an in-reactor polymer blend comprising: (a) a first ethylene containing polymer having a density of greater than 0.90 g/cm3 and a Mw of more than 20,000 g/mol; and (b) a second ethylene containing polymer having a density of less than 0.90 g/cm3, wherein the polymer blend has a Tm of at least 90° C. (DSC second melt), a density of less than 0.92 g/cm3, and the densities of the first and second polymers differ by at least 1%.
Abstract translation:本发明涉及包含共混组合物的膜,其包含:1)含线性乙烯的聚合物,例如LLDPE,HDPE等; 和至少1重量%的反应器内聚合物共混物,其包含:(a)密度大于0.90g / cm 3和Mw大于20,000g / mol的第一含乙烯聚合物; 和(b)密度小于0.90g / cm 3的第二含乙烯聚合物,其中聚合物共混物具有至少90℃的Tm(DSC第二熔体),小于0.92g / cm 3的密度, 并且第一和第二聚合物的密度相差至少1%。
Abstract:
A method of forming a finished film comprising extruding a molten polyethylene comprising a diene terpolymer modifier through a die opening to form a film, wherein the diene-terpolymer modifier is a terpolymer comprising ethylene-derived units, C3 to C10 α-olefin derived units, and diene-derived units; causing the film to progress in a direction away from the die opening; cooling the film at a distance from the die opening, the distance adjusted to allow relaxation of the molten polyethylene prior to solidification and/or crystallization upon cooling; and isolating a finished film therefrom. Desirably, the polyethylene is a linear low density polyethylene, and the die and cooling is suitable for forming a blown film.