Abstract: A polymer blend includes 35 to 50 wt % of at least one propylene-based elastomer, 25 to 50 wt % of at least one impact copolymer; and 15 to 25 wt % of at least one low density polyethylene component. The propylene-based elastomer has a heat of fusion less than about 80 J/g, greater than 50 wt % propylene and from about 3 wt % to about 25 wt % units derived from one or more C2 or C4-C12 ?-olefins, based on a total weight of the propylene-based elastomer. The low density polyethylene has a density of about 0.90 g/cm3 to about 0.94 g/cm3. The polymer blend is useful for making a roofing membrane.

Abstract: An elastomeric composition is provided that includes from 1 to 100 parts by weight per hundred parts by weight rubber (phr) of a first propylene-?-olefin-diene (PEDM) terpolymer comprising 70 wt % to 92.5 wt % propylene, 7.5 wt % to 30 wt % a C2 or C4-C12 ?-olefin, and 3.5 wt % to 20 wt % diene, said wt % based on the weight of the PEDM terpolymer. The PEDM terpolymer V may have a Mooney viscosity (ML(1+4)) of 25 MU to 100 MU. The composition may further include from 0 to 99 phr of an ethylene-based copolymer comprising 40 wt % to 95 wt % ethylene.

Abstract: A polymer blend includes 35 to 50 wt % of at least one propylene-based elastomer, 25 to 50 wt % of at least one impact copolymer; and 15 to 25 wt % of at least one low density polyethylene component. The propylene-based elastomer has a heat of fusion less than about 80 J/g, greater than 50 wt % propylene and from about 3 wt % to about 25 wt % units derived from one or more C2 or C4-C12 ?-olefins, based on a total weight of the propylene-based elastomer. The low density polyethylene has a density of about 0.90 g/cm3 to about 0.94 g/cm3. The polymer blend is useful for making a roofing membrane.

Abstract: Provided herein are elastomer blends and membranes including a blend of a propylene-based elastomer, a thermoplastic resin, a flame retardant, and an ultraviolet stabilizer.

Abstract: Provided herein are roofing membranes that comprise a blend composition of propylene-based elastomer, thermoplastic resin, flame retardant, and ultraviolet stabilizer. In some embodiments, the blend compositions further comprise polyalphaolefin.

Abstract: Provided herein are membranes including a blend of a propylene-based elastomer and an ethylene copolymer, a thermoplastic resin, a flame retardant, and an ultraviolet stabilizer.

Abstract: Provided herein are roofing membranes that comprise a blend composition of propylene-based elastomer, thermoplastic resin, flame retardant, and ultraviolet stabilizer. In some embodiments, the blend compositions further comprise polyalphaolefin.

Abstract: Provided herein are elastomer blends and membranes including a blend of a propylene-based elastomer a thermoplastic resin, a flame retardant, and an ultraviolet stabilizer.

Abstract: Provided herein are compositions including a blend of a propylene-based elastomer, a propylene polymer, and a foaming agent.

Abstract: A polymer blend comprising 10 to 90 parts by weight of a propylene-based polymer component having a weight average molecular weight of at least 200 kg·mol?1; and 20 to 80 parts by weight of a propylene-based elastomer component comprising structural units derived from propylene and at least one of ethylene and C4-C12 alpha-olefins having a weight average molecular weight in the range from 5 to 50 kg·mol?1, method for making a membrane comprising the same and roofing membrane comprising the same. The polymer blend is particularly suitable for making roofing membrane due to advantageous elastic modulus in broad temperature ranges.

Abstract: A polymer blend comprising 10 to 90 parts by weight of a propylene-based polymer component having a weight average molecular weight of at least 200 kg·mol?1; and 20 to 80 parts by weight of a propylene-based elastomer component comprising structural units derived from propylene and at least one of ethylene and C4-C12 alpha-olefins having a weight average molecular weight in the range from 5 to 50 kg·mol?1, method for making a membrane comprising the same and roofing membrane comprising the same. The polymer blend is particularly suitable for making roofing membrane due to advantageous elastic modulus in broad temperature ranges.

Abstract: Provided herein are membranes including a blend of a propylene-based elastomer and an ethylene copolymer, a thermoplastic resin, a flame retardant, and an ultraviolet stabilizer.

Abstract: The present disclosure relates to a carpet backing composition comprising a first polymer component, a filler, and a compatibilizer that can provide free radial resource for performing bonding functions of the first polymer component and the filler. The composition can exhibit good melt strength/extrudability and low viscosity. The present disclosure also relates to a carpet backing or a carpet that comprises such carpet backing composition.

Abstract: Provided are carpets comprising at least one propylene-based elastomer. The presence of the propylene-based elastomer provides the carpet with improved properties, including good tuft bind strength and tuft lock strength, and reliable construction.

Abstract: The present disclosure is directed to compositions comprising: (a) a propylene-based elastomer, comprising at least about 60 wt % propylene-derived units and about 5 to about 25 wt % ethylene-derived units, based on total weight of the propylene-based elastomer, wherein the propylene-based elastomer has a heat of fusion of less than about 80 J/g; and (b) a polyalphaolefin. Such compositions have at least one of the following properties: (a) a hardness of about 25 to about 67 shore A (ASTM D2240); (b) a glass transition temperature of about ?35° C. to about ?65° C. (ASTM D3418-08, 10° C./min); and (c) an impact resistance at a temperature no lower than about ?40° C. (ASTM D3763).

Abstract: Provided are TPV formulations having beneficial properties, such as scratch resistance, improved bondability, e.g., nylon bondability, and improved processability. Preferred TPVs provide lower density, lower cost, and good extrusion capabilities compared to conventional formulations. Sealing systems may be prepared with the TPVs described above. An exemplary automotive sealing system includes a sealant foot and a sealant lip.

Abstract: A method of forming a thermoplastic vulcanizate by first providing a melt-blender having a die through which melt-blended thermoplastic vulcanizate passes to form a shaped article; wherein the die comprises a flow design having at least one flow branch having a taper angle and a flow reservoir at the end of each flow branch; and wherein the taper angle of the flow design ranges from 5 to 20 degrees; followed by melt-blending a thermoplastic and an elastomer with an organic peroxide curative in the melt-blender to form a thermoplastic vulcanizate; and finally, passing the melt-blended thermoplastic vulcanizate through the flow design to form the shaped article.

Abstract: A method of forming a thermoplastic vulcanizate by first providing a melt-blender having a die through which melt-blended thermoplastic vulcanizate passes to form a shaped article; wherein the die comprises a flow design having at least one flow branch having a taper angle and a flow reservoir at the end of each flow branch; and wherein the taper angle of the flow design ranges from 5 to 20 degrees; followed by melt-blending a thermoplastic and an elastomer with an organic peroxide curative in the melt-blender to form a thermoplastic vulcanizate; and finally, passing the melt-blended thermoplastic vulcanizate through the flow design to form the shaped article.