A thermally expandable composition including at least one polymer, at least one free radical initiator, at least one chemical blowing agent, and silane groups; and also a baffle and/or a reinforcement element for hollow structures including the thermally expandable composition, to a process for manufacturing the baffle and/or reinforcement element, to use of the baffle and/or reinforcement element for sealing, baffling, or reinforcing of a cavity or a hollow structure, and to a method for sealing, baffling and/or reinforcing a cavity or hollow structure.

A foamed polymeric insulation product comprises a polymeric foam formed from a foamable polymer composition comprising: a) a thermoplastic matrix polymer composition, and b) a blowing agent composition. A barrier coating is formed on at least one of the first major surface and the second major surface, the barrier coating being formed from a barrier coating composition comprising a dispersion of at least one polymer comprising at least one polymer selected from polyvinylidene dichloride (PVDC), polyvinylidene fluoride (PVDF), polyvinyl chloride (PVC), polyvinyl alcohol, ethylene vinyl alcohol, polyurethane, styrene butadiene (SBR), and combinations or copolymers thereof; and a viscosity modifier.

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.

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

The present invention provides polymer blends that can be used in a multilayer structure and to multilayer structures comprising one or more layers formed from such blends. In one aspect, a polymer blend comprises (a) a copolymer comprising ethylene and at least one of acrylic acid and methacrylic acid having an acid content of 2 to 21 weight percent based on the weight of the copolymer, wherein the amount of copolymer (a) comprises 20-80 weight percent of the blend based on the total weight of the blend, and (b) a copolymer comprising ethylene and at least one of methyl acrylate and ethyl acrylate having an acrylate content of 5 to 30 weight percent based on the weight of the copolymer, wherein the amount of copolymer (b) comprises 10 to 50 weight percent of the blend based on the total weight of the blend, wherein the amount of copolymer (a) and copolymer (b) is at least 70 weight percent of the blend based on the total weight of the blend.

A liquid-repellent structure includes a surface to which liquid repellency is to be imparted; a foundation layer having a surface and disposed to face the surface to which liquid repellency is to be imparted; and a liquid-repellent layer disposed to face the surface of the foundation layer, wherein the foundation layer contains an acid-modified polyolefin, the liquid-repellent layer contains a fluorine-containing resin and particles, and the fluorine-containing resin contains a hydrophilic structural unit having at least one of an amino group and an amide group. A packaging material has the liquid-repellent structure disposed to face a product. The packaging material can also be applied to a product that is a selected one of hand soap, body soap, shampoo, rinse, creams, and cosmetics and that contains a surfactant.

The present application relates to a chain extender masterbatch for PET extrusion foaming, preparation method therefor, and a use thereof. The masterbatch is mainly prepared by the following components in parts by weight: 5-30 parts of PMDA, 25-90 parts of PBT, 5-70 parts of POE+POE-g-GMA, in which POE accounts for 0-85% of POE+POE-g-GMA by weight; a melting temperature of PBT is 170-225° C. The preparation method includes melting and mixing the above components at a melting temperature of 180-230° C. and a screw speed of 100-500 rpm, and air cooling strand granulating or air cooling die face granulating. The masterbatch can be used in foaming processes of fiber grade PET, film grade PET, bottle grade PET, engineering plastic grade PET and recycled PET.

A polymer composition comprises a polyethylene polymer having a Melt Relaxation Ratio of 1.5 or greater and a salt of a branched alkyl phosphonic acid. A method for molding a thermoplastic polymer composition comprises the steps of (a) providing an apparatus comprising a die and a mold cavity; (b) providing the polymer composition described above; (c) heating the polymer composition to melt the polymer composition; (d) extruding the molten polymer composition through the die to form a parison; (e) capturing the parison in the mold cavity; (f) blowing a pressurized fluid into the parison to inflate the parison and conform it to the interior surface of the mold cavity; (g) allowing the molded article to cool so that the molded article retains its shape; and (h) removing the molded article from the mold cavity.

A product, especially a master-batch for producing thermally expandable compositions, is obtainable or obtained by reacting, preferably by extruding, a mixture including: (a) at least one polymer P, cross-linkable by peroxide, and (b) at least one coagent, especially an acrylate A, and (c) at least one peroxide PE, wherein the mixture is reacted such that the product has an average melt flow index (MFI) of between 0.1 and 8 g/10 min.

The invention relates to a composition comprising: (A) a propylene-based polymer which is a propylene homopolymer or a propylene copolymer consisting of at least 90 wt % of propylene monomer units and at most 10 wt % of ethylene monomer units and/or an α-olefin monomer units having 4 to 10 carbon atoms, (B) a terpolymer of propylene, an α-olefin having 4 to 10 carbon atoms and ethylene and (C) a copolymer of ethylene and an α-olefin having 4 to 10 carbon atoms, wherein the copolymer (C) has a density of at least 0.880 g/cm.sup.3, wherein the amount of the propylene-based polymer (A) is at least 60 wt % with respect to the total composition.