Abstract: The present disclosure relates to comb-block copolymers and methods thereof. In some embodiments, a copolymer includes a first block comprising an ethylene-propylene copolymer; and a second block comprising a high density polyethylene. In some embodiments, a polyethylene composition includes the copolymer and a branched vinyl/vinylidene-terminated high density polyethylene. In some embodiments, a process for producing a polyethylene composition includes polymerizing ethylene, at a temperature of at least 100° C., by introducing the ethylene to a first catalyst system having a first catalyst compound and a first activator to form a branched vinyl/vinylidene-terminated high density polyethylene. The process includes introducing the branched vinyl/vinylidene-terminated high density polyethylene to additional ethylene, propylene, and a second catalyst system having a second catalyst compound and a second activator. The process includes obtaining the polyethylene composition.

Abstract: The disclosed technology generally relates to liquefied natural gas (LNG) and liquefied-compressed natural gas (L-CNG) filling stations, and more particularly to an LNG/L-CNG hydraulic pressurization device and a gas filling station.

Abstract: The disclosed technology generally relates to liquefied natural gas (LNG) and liquefied-compressed natural gas (L-CNG) filling stations, and more particularly to an LNG/L-CNG hydraulic pressurization device and a gas filling station.