Peroxide masterbatch comprising: 15-55 wt % of one or more organic peroxides, 15-45 wt % of one or more copolymers of at least two different monomers, the first monomer being ethylene or propylene, the second monomer being a vinyl monomer comprising at least four carbon atoms and optionally heteroatoms, 6-70 wt % of at least two filler typesfiller type 1 and filler type 2each having a different BET surface area: (i) filler type 1 being present in the masterbatch in a concentration of 3-30 wt % and having a BET surface area of more than 100 m.sup.2/g; (ii) filler type 2 being present in the masterbatch in a concentration of 3-40 wt % and having a BET surface area of 100 m.sup.2/g or less; wherein the masterbatch has the form of extrudates.

This disclosure describes polymerization processes and processes for quenching polymerization reactions using reactive particulates, such as high molecular weight functionalized olefin copolymers, as quenching agents, typically in solution or bulk polymerization processes.

This disclosure describes polymerization processes and processes for quenching polymerization reactions using reactive particulates, such as high molecular weight functionalized olefin copolymers, as quenching agents, typically in solution or bulk polymerization processes.

A polyethylene blend comprises a nucleated polyethylene homopolymer composition and an un-nucleated or nucleated bimodal polyethylene copolymer.

Propylene polymer based packaging films for encapsulating hot melt adhesives are disclosed. The packaging films are readily miscible with the various hot melt adhesive chemistries during the melting stage without deleteriously affecting the adhesive properties, making the packaging film particularly well suited for packaging hot melt adhesives in a pillow, cylinder, pouch, block, cartridge and like forms.

There is provided a thermoplastic elastomer composition from which a molded article excellent in flame retardancy, tensile properties, softness, and appearance can be obtained and by which a mold is hardly polluted during its molding. The thermoplastic elastomer composition includes at least one selected from an ethylene copolymer containing monomer units derived from ethylene and monomer units derived from at least one selected from propylene and -olefins having 4 to 10 carbon atoms (component (A)) and a copolymer containing monomer units derived from an aromatic vinyl compound and monomer units derived from a conjugate diene compound (component (B)), a propylene polymer (component (C)), a phosphoric acid salt compound (component (D)), a phosphoric acid ester (component (E)), and a metal oxide (component (F)).

There is provided a thermoplastic elastomer composition from which a molded article excellent in flame retardancy, tensile properties, softness, and appearance can be obtained and by which a mold is hardly polluted during its molding. The thermoplastic elastomer composition includes at least one selected from an ethylene copolymer containing monomer units derived from ethylene and monomer units derived from at least one selected from propylene and -olefins having 4 to 10 carbon atoms (component (A)) and a copolymer containing monomer units derived from an aromatic vinyl compound and monomer units derived from a conjugate diene compound (component (B)), a propylene polymer (component (C)), a phosphoric acid salt compound (component (D)), a phosphoric acid ester (component (E)), and a metal oxide (component (F)).

Disclosed is a glass fiber composite material composition having further improved compatibility between glass fibers and polypropylene and thus maximized interfacial adhesion between the resin and the glass fibers in a glass fiber composite material. The present invention provides a glass fiber composite material composition comprising: (A) 60-93% by weight of polypropylene; (B) 1-30% by weight of glass fiber sized with a silane-based compound; and (C) 1-10% by weight of a polypropylene resin modified with maleic anhydride and a methacryloxysilane-based compound.

The present disclosure relates to systems including a ternary stabilization package that contains a first phosphite, a second phosphite and a primary antioxidant is used in combination with a polyethylene that is polymerized with a mixed catalyst system that contains two different types of catalysts. In some embodiments the stabilized polyethylene exhibits improved color performance.

This invention provides an easy-to-tear resin film. Such easy-to-tear resin film is an easy-to-tear, unstretched resin film composed of a blend of a polyethylene terephthalate-based resin with the second resin having a difference in SP value from the polyethylene terephthalate-based resin of 1.1 to 4.0 (cal/cm.sup.3).sup.0.5. This invention also provides a laminate film 1B for a packaging material comprising the easy-to-tear, unstretched resin film 10 between the inner layer film 20 serving as a heat seal surface and the surface layer film 30 comprising an isophthalic acid-modified polyethylene terephthalate resin having a copolymerization ratio of isophthalic acid component of 0 mol % to 5 mol %.