The invention relates to a composition comprising: a) a propylene homopolymer or propylene-ethylene copolymer having an ethylene content of at most 1.5 wt % based on the weight of the propylene-ethylene copolymer, said a propylene homopolymer or propylene-ethylene copolymer having: i) a Mw/Mn in the range of 4.0 to 12, wherein Mw stands for the weight average molecular weight and Mn stands for the number average molecular weight and wherein Mw and Mn are measured according to ASTM D6474-12; ii) an XS in the range from 1.0 to 8.0 wt %, wherein XS stands for the amount of xylene solubles which are measured according to ASTM D 492-10; and iii) a melt flow rate in the range of 1 to 10 dg/minas measured according to ISO1133:2011(2.16 kg/230° C.); b) a first additive, being one or more tocopherols and/or one or more tocotrienols; and c) a second additive, being an organic acid scavenger. The invention moreover relates to a biaxially oriented polypropylene (BOPP) film comprising said composition, to a process for the preparation of a biaxially oriented polypropylene (BOPP) film and to the use of the composition for the preparation of an article, preferably a BOPP film.

A composition including a melt blend of at least one thermoplastic elastomer (TPE) and at least one non-crosslinked elastomer and optionally at least one catalyst for catalyzing chain extension and/or crosslinking and/or coupling reactions of the at least one non-crosslinked elastomer. Further, a method for producing a polymer composition, to a shaped article including a substrate layer composed of the composition, to a method producing a shaped article, and to a method for covering a roof using the shaped articles.

This invention relates to sulfur, vulcanization accelerator and carbon black master batch formulations comprising either a semi-crystalline propylene-olefin copolymer or a combination of a semi-crystalline propylene-olefin copolymer and a hydrocarbon resin. The semi-crystalline propylene-olefin copolymer or the combination of semi-crystalline propylene-olefin copolymer and hydrocarbon resin imparts a high hardness property to the carbon black, sulfur and accelerator master batch formulations thereby preventing pellet agglomeration during storage and allowing for ease in material handling.

Provided herein are seam tapes and related methods. The seam tapes can be compatible with polyolefin-based waterproof/breathable (w/b) membranes, including polypropylene (PP) w/b membranes and/or polyethylene (PE) w/b membranes. Also provided are seams sealed by means of these seam tapes, as well as materials, fabrics, and garments including one or more of these sealed seams.

In an embodiment, a heat-seal film includes 10-90 wt % of a first polymer component and 10-90 wt % of a second polymer component, based on a total weight of the first polymer component and the second polymer component, wherein: the first polymer component includes propylene, and optionally, up to 18 wt % of a C.sub.2 and/or a C.sub.4-C.sub.20 α-olefin based on a total weight of the first polymer component; and the second polymer component includes 91-99.9 wt % of propylene and 0.1-9 wt % of ethylene based on a total weight of the second polymer component, the second copolymer component having a melt flow rate of 2-60 g/10 min. In another embodiment, a multi-layer film structure includes a heat-seal layer including a heat-seal film described herein; and an unoriented, an uniaxially oriented, or a biaxially oriented base layer including polypropylene homopolymer, a polypropylene random copolymer, or a combination thereof.

A thermoplastic elastomer compound includes polyolefin elastomer, high softening point tackifier, and, optionally, styrenic block copolymer. When styrenic block copolymer is present, the weight ratio of polyolefin elastomer to styrenic block copolymer is no less than about 1:1. The polyolefin elastomer has a POE Tan Delta Peak Temperature, the styrenic block copolymer has a SBC Tan Delta Peak Temperature, and the thermoplastic elastomer compound has a Compound Tan Delta Peak Temperature. The Compound Tan Delta Peak Temperature is greater than the POE Tan Delta Peak Temperature. When styrenic block copolymer is present, Compound Tan Delta Peak Temperature is also greater than the SBC Tan Delta Peak Temperature. The thermoplastic elastomer compound exhibits useful damping properties at or above room temperature and can be formed into plastic articles, including foamed plastic articles and/or crosslinked plastic articles, which can be useful for a variety of damping applications.

A flame-retardant polymer composition comprises at least one elastomeric polymer that includes at least one monomer incorporated by polymerization. The at least one monomer comprises at least one of C2-C30 alkylenes. The flame-retardant polymer composition further comprises polyarylene sulfide. The polyarylene sulfide is present in a particle form and/or in a fiber form.

The present invention aims to provide a masterbatch for foam molding which can be suitably used in molding involving high shear force or molding requiring low molding temperature and which can provide a foam molded article having a high expansion ratio and good appearance quality. The present invention also aims to provide a foam molded article formed from the masterbatch for foam molding. Provided is a masterbatch for foam molding, containing: a base resin; and a thermally expandable microcapsule, the masterbatch having a true specific gravity of 0.80 g/cm.sup.3 or more and a Mooney viscosity ML 1+4 (100° C.) of 20 to 90, the base resin containing an EPDM resin, the masterbatch containing the thermally expandable microcapsule in an amount of 40 to 300 parts by weight relative to 100 parts by weight of the base resin.

The present invention provides methods for reducing extractables from plastic articles and improving barrier properties of such plastic articles. The method includes the steps of: (a) providing a plastic article in a chamber; and (b) providing a fluorination gas and a second gas, such as oxygen or another halogen other than fluorine, in a chamber, thereby exposing the plastic article to the fluorination gas and the second gas. The method produces a treated plastic article that is both low in extractable components and suitable for use in packaging formulations containing an organic ingredient.

A resin pellet includes a pellet-shaped ethylene-vinyl acetate copolymer; a liquid coating agent; and a solid coating agent adhered to at least a portion of surfaces of the ethylene-vinyl acetate copolymer and of the liquid coating agent, in which the liquid coating agent is a compound including a hydroxyl group, and the solid coating agent is an organic compound.