The present invention relates to a process for producing ultrahigh molecular weight polymer in powder form which is highly efficient drag reducing polymer. The process consists of polymerizing using titanium halide-based catalyst, co-catalyst, optionally a solvent, and monomer to a polymerization reactor, having stirring device and inlet charging and discharge outlet. The resulting ultrahigh molecular weight drag reducing polymers is free flowing, having intrinsic viscosity >10 dL/g. The process reduces polymerization time, temperature, and achieves high conversion, i.e., >90%.

The present invention relates to a polymer composition, to a layer element, preferably to at least one layer element of a photovoltaic module, comprising the polymer composition and to an article which is preferably said at least one layer of a layer element, preferably of a layer element of a photovoltaic module.

The present invention relates to a polymer composition, to a layer element, preferably to at least one layer element of a photovoltaic module, comprising the polymer composition and to an article which is preferably said at least one layer of a layer element, preferably of a layer element of a photovoltaic module.

The present invention discloses a photo-crosslinked rubber composition and application thereof. The rubber composition comprises a rubber matrix and an initiator. Based on 100 parts by weight of the rubber matrix, the rubber matrix comprises a branched polyethylene with a content represented as A, in which 0<A100, and an ethylene-propylene rubber with a content represented as B, in which 0B<100; and the initiator accounts for 0.1-10 parts, and the initiator includes at least one of a cationic photoinitiator and a free radical photoinitiator. In the rubber composition, the ethylene-propylene rubber is partially or completely replaced by the branched polyethylene. The rubber composition can be used for rubber product crosslinked by ultraviolet light, including wire, cable, film, glove, condom, and medical catheter, which achieves excellent elasticity, electrical insulation property, aging resistance and ozone resistance, and also has good mechanical strength.

The invention is related to a pipe produced by a reactive modification of a recycled polyethylene in the presence of a free radical generator. Further, the present invention is also directed to a process in a controlled manner for producing pipes from modified polyethylene recyclates having broader MFR range.

The present invention relates to a polymer composition, to a layer element, preferably to at least one layer element of a photovoltaic module, comprising the polymer composition and to an article which is preferably said at least one layer of a layer element, preferably of a layer element of a photovoltaic module.

The present invention relates to a polymer composition, to a layer element, preferably to at least one layer element of a photovoltaic module, comprising the polymer composition and to an article which is preferably said at least one layer of a layer element, preferably of a layer element of a photovoltaic module.

The invention is related to a process for producing modified polyethylene having decreased melt flow rate (5 kg, 190 C.) (MFR). In particular, the present invention is directed to a process in a controlled manner for producing modified polyethylene recyclates having low MFR and low gel content directly by reactive extrusion processing.

A glass run for guiding a door glass in a frame includes: a body including an outer-cabin side wall, an inner-cabin side wall, and a connecting wall which connects the side walls and forms a channel; an outer-cabin side lip which extends toward an inside of the channel from the outer-cabin side wall and is slidably brought into contact with an outer-cabin side surface of the door glass; an inner-cabin side lip which extends toward the inside of the channel from the inner-cabin side wall and is slidably brought into contact with an inner-cabin side surface of the door glass. The outer-cabin side lip and the inner-cabin side lip include an ethylene--olefin copolymer to which a silane crosslinking is applied. The body includes a thermoplastic resin to which the silane crosslinking is not applied.

A process for increasing MFR.sub.2 of a polyethylene copolymer or an ethylene plastomer or elastomer comprising: (I) extruding a copolymer of polyethylene copolymer having a density of 910 to 970 kg/m.sup.3 and an MFR.sub.2 of 1 and 100 g/10 min or an ethylene plastomer or elastomer having a density of 855 to 910 kg/m.sup.3 and an MFR.sub.2 of 0.5 and 100 g/10 min in the presence of 0.1 to 2 wt % of a non-peroxide radical initiator so as to produce a polyethylene copolymer having an MFR.sub.2 of 200 g/10 min or more, or an ethylene plastomer or elastomer having a MFR.sub.2 of 200 g/10 min or more.