Patent
Resin composition for extruded forms.
Hajime C,O Mitsubishi Petro.Co. Ltd. Ikeno,Keiko C,O Mitsubishi Petro.Co. Ltd. Shichijo,Koji C,O Mitsubishi Petro.Co. Ltd. Yamamoto +5 more
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TLDR
In this paper, a resin composition for extruded forms that has improved workability, and excellent properties with respect to transparency, heat resistance, low-temperature resistance, etc.Abstract:
A resin composition for extruded forms that has improved workability, and excellent properties with respect to transparency, heat resistance, low-temperature resistance, etc. The composition contains 50 to 99 % by weight of component A, which is a copolymer of ethylene and α -olefin, and 1 to 50 % by weight of component B, which is an ethylene-containing polymer. The component A has: (a) a melt flow rate (MFR) of 0.1 to 5 g/10 min.; (b) a density D of 0.88 to 0.925 g/cm³; (c) a single peak of elution volume indicated by an elution curve obtained by temperature rising elution fractionation (TREF), the peak corresponding to a temperature within a range of from 30 to 100°C, and the elution curve satisfying a relationship in which the ratio H/W is not less than 1 when H represents the height of the peak and W represents the width of the elution curve at half of the height H; and (d) an elution volume Y (in % of the weight thereof with respect to the total weight of the component A) at an elution temperature of 50C in TREF, the elution volume Y satisfying the following condition: ① Y ≦ - 4500D + 4105 when the density D of the component A is less than 0.91 g/cm³, but Y ≦ 100; or ② Y ≦ 10 when the density D of the component A is not less than 0.91 g/cm³. The component B has: (a') a melt flow rate of 0.1 to 20 g/10 min.; (b') a density of 0.88 to 0.93 g/cm³; (c') a memory effect (ME) of not less than 1.3; and (d') a melt tension (MT) of not less than 1.0 g.read more
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Extrusion compositions having high drawdown and substantially reduced neck-in
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Patent
Elastic substantially linear olefin polymers
TL;DR: Elastic substantially linear olefin polymers are disclosed in this paper which have processability similar to highly branched low density polyethylene (LDPE), but the strength and toughness of linear LDPE, and can also have from 0.01 to 3 long chain branches/1000 carbons along the polymer backbone.
Patent
Elastic substantialy linear olefin polymers
TL;DR: In this article, substantially linear olefin polymers are disclosed which have very good processability, including processing indices (PI's) less than or equal to 70 percent of those of a comparative linear OLEF polymer and a critical shear rate at onset of surface melt fracture of at least 50 percent greater than the critical hear rate of a traditional linear OE polymer at about the same I2 and Mw /Mn.
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Linear ethylene interpolymer blends of interpolymers having narrow molecular weight and composition distributions
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Patent
Heat sealable polyolefin films containing very low density ethylene copolymers.
TL;DR: In this paper, the authors presented a laminar polyolefin film material having a base film layer comprising a blend of an olefin polymer and up to about 30% by weight of at least one very low density copolymer of ethylene and a C 3 to C 20 alpha oLEfin comonomer copolymizable with ethylene, said base layer having a heat sealable film layer present on one or both surfaces thereof.
Patent
Extrusion compositions having high drawdown and substantially reduced neck-in
Kale Lawrence T,Pradeep Jain,David C. Kelley,Parikh Deepak R,Baker Sharon L,Mckinney Osborne K +5 more
TL;DR: In this article, an ethylene polymer extrusion composition having high drawdown and substantially reduced neck-in, a process for making such a composition and a process of using such a composite to prepare extrusion coatings, extrusion profiles and extrusion cast films are disclosed.