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:
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:
A heterogeneous vulcanized polymer blend comprising a continuous phase comprising a thermoplastic polypropylene having a crystallinity of at least 30% and a dispersed phase comprising particles of an elastomeric copolymer dispersed in the continuous phase and having an average particle size of less than 5 micron. The elastomeric copolymer has a crystallinity of less than 20% and is at least partially cross-linked such that no more than about 80 wt % of the elastomeric copolymer is extractable in cyclohexane at 23° C.
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:
A heterogeneous in-situ polymer blend comprising a continuous phase comprising a polypropylene having a crystallinity of at least 30% and a melting point temperature Tm greater than 130° C., and a heat of fusion ΔHf greater than 65 J/g; and a dispersed phase comprising particles of an elastomeric copolymer dispersed in the continuous phase and having an average particle size of less than 5 micron, the elastomeric copolymer comprising ethylene units and 0.001 to 5 wt % diene by weight of the copolymer, and having a crystallinity of less than 20% and being at least partially cross-linked such that the degree of cross-link is at least 20%.
Abstract:
The present invention relates to a branched modifier and 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 0.70 or less; b) an Mw of 100,000 g/mol or more; c) an Mw/Mn of 4.0 or more; d) a shear thinning ratio of 110 or more, e) a melt strength of 10 cN or more; f) a complex viscosity at 0.1 rad/sec at 190° C. of at least 130,000 Pa·s; and g) a phase angle of Z° or less where Z=138.3G*(−0.142), where G* is the complex modulus reported in Pascals measured at 190° C. and the phase angle units are reported in degrees, wherein the G* is from 1,000 to 1,000,000 Pa.
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:
The present invention relates to polyethylene compositions comprising one or more ethylene polymers and one or more HDPE modifiers, in particular, this invention further relates to polyethylene blends comprising one or more ethylene polymers and one or more HDPE modifiers, wherein the modifier has: 1) a density of greater than 0.94 g/cc; 2) a Mw/Mn greater than 5; 3) a melt index (ASTM 1238, 190° C., 2.16 kg) of less than 0.7 dg/min; and 4) a g′vis of 0.96 or less.
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:
The present invention relates to a blown film 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) optionally, an Mz of 2,000,000 g/mol or less; and f) a shear thinning ratio of 40 or more.