A separator for an electricity storage device comprising a silane-modified polyolefin, wherein silane crosslinking reaction of the silane-modified polyolefin is initiated when it contacts with the electrolyte solution, as well as a method for producing the separator.

The present invention relates to a porous film including polyethylene and pore-forming particles, wherein the porous film has a structure including lamella and fibril, and the average size of pores located inside the porous film is larger than the average size of pores located on the surface of the porous film; a separator including the same; and an electrochemical cell.

The present invention relates to a separator film in a lithium battery, more specifically relates to a polyolefin microporous film and a preparation method thereof. The polyolefin microporous film has a porosity above 30% and below 65%, a median pore size above 10 nm and below 60 nm, a stress-strain (σ-ε) curve integral in Machine Direction (MD) and Transverse Direction (TD) directions simultaneously fulfilling the following definition:

E=∫.sub.0.sup.εσ(ε)dε>150 J/m.sup.2; and the largest pore size, the smallest pore size and the median pore size fulfilling the following definition: 0.9<P<1.2, wherein P=(the largest pore size−the smallest pore size)/the median pore size. The polyolefin microporous film according to the present invention has high tenacity, small pore sizes, concentrated distribution of pore sizes, great stability for coiling, and enabling high number of battery cycles. When used as a separator film, battery manufacturing safety and the service life of the battery being made can be increased.

A method of separating and purifying a mixed stream of contaminated reclaimed polyethylene and contaminated reclaimed polypropylene is provided. The method comprises the steps of extraction, dissolution, settling, purification, and solvent separation to produce separate streams of purified recycled polyethylene and purified recycled polypropylene. Both separate streams are produced in the same production plant operating in swing mode, and have virgin-like optical properties.

In an embodiment, a slit film tape composition includes a propylene-based elastomer comprising 1-16 wt % ethylene based on a total weight of the propylene-based elastomer, the propylene-based elastomer having a melt flow rate (MFR) of 1-50 g/10 min; a polypropylene comprising 10-100 mol % propylene based on a total weight of the polypropylene, the polypropylene having a MFR of 2-35 g/10 min; and a filler. In another embodiment, a slit film tape composition includes a propylene-based elastomer comprising from 5-30 wt % ethylene based on a total weight of the propylene-based elastomer, the propylene-based elastomer having a MFR of 35-60 g/10 min; a polypropylene comprising 10-100 mol % propylene based on a total weight of the polypropylene, the polypropylene having a MFR of 2-35 g/10 min; and a filler.

An object to provide a vent pipe isolation balloon for a liquefied gas storage tank, which has excellent physical strength, inflatability, and durability at cryogenic temperatures, and a vent pipe isolation device including the balloon. The vent pipe isolation balloon has inner and outer membranes made of silicon rubber, and a reinforcing substrate sandwiched between the inner membrane and the outer membrane. The balloon has an outer shape of a cylindrical shape or a truncated cone shape with both ends opened, and is inflated when an inert gas is injected into the balloon with the openings sealed. The reinforcing substrate is composed of a fiber bundle and has a network structure.

Disclosed herein are processes for producing blends of recycled polymeric material and virgin polyethylene. Post-consumer recycled plastic (PCR) can vary widely with respect to composition which includes mixtures of variable amounts of different polar and non-polar polymers such as polyethylene, polypropylene, ethylene vinyl alcohol, and polyamide. Mixing PCR and virgin polyethylene is inconsistent, partially due to variability, and frequently results in a final product with poor mechanical and optical properties. The process described herein of adding PCR to a solution polymerization process provides another option for blending PCR and virgin polyethylene that offers an ability to exert greater control on the properties of the final product, independent of the composition of the PCR.

“PROCESS FOR RECYCLING LAMINATED POLYMER PACKAGING COMPRISING ALUMINIUM” contained in the application field of recycling processes, more precisely in the field of recycling processes for laminate polymeric packaging. Said process comprises stages of crushing and preliminary washing of laminate polymeric packages comprising aluminum, selective aluminum dissolution reaction, cleaning and drying, obtaining recycled fragments. The recycling process showed in the invention stands out from its similar by using the process of selective dissolution of laminate polymeric packaging comprising aluminum complemented by a combination of process parameters and steps that aim to accelerate and optimize the dissolution process and guarantee the purity and yield of the products obtained according to the process described herein.

The present invention relates to a molded article with a sufficiently metallic appearance and a sufficient degree of brightness.

Rheology-modified, additive-containing ethylenic polymer compositions are prepared in a continuously operated extruder comprising first, second and third zones by a process comprising the steps of: mixing in the second zone of the extruder an ethylenic polymer and a high-temperature decomposing peroxide at a temperature such that the half-life of the peroxide is equal to or greater than one minute and for a sufficient period of time to modify the rheology of the ethylenic polymer to produce a rheology-modified, melted ethylenic polymer for transfer to the third zone of the extruder; and adding to the third zone one or more additives to the rheology-modified, melted ethylenic polymer to produce the rheology-modified, additive-containing ethylenic polymer.