Abstract: In an embodiment, a thermoplastic vulcanizate (TPV) composition is provided. The TPV composition includes a thermoplastic polyolefin; and an ethylene based copolymer rubber, wherein the ethylene based copolymer rubber has: a Mw of from 500,000 g/mol to 3,000,000 g/mol, a Mw/Mn of 4.0 or lower, and a g?vis of 0.90 or greater. In another embodiment, a TPV composition includes a thermoplastic phase and an ethylene-propylene-diene terpolymer, wherein the thermoplastic vulcanizate composition has: a hardness of from 20 Shore A to 60 Shore D; and a stress relaxation slope of ?1 to ?5 (l/min) as measured by an Elastocon stress relaxation instrument.

Abstract: A flexible conduit used for transportation of hydrocarbon fluids for off-shore and on-shore oil and gas applications includes an inner pressure sheath, at least one reinforcing layer at least partially disposed around the pressure sheath, an outer protective sheath at least partially disposed around the at least one reinforcing layer, and optionally a thermally insulating layer disposed between the at least one reinforcing layer and the outer protective sheath. At least one of the inner pressure sheath, outer protective sheath, and the thermally insulating layer is manufactured using a thermoplastic blend (TPB) composition. The TPB compositions disclosed herein are useful for the formation of at least one polymer layer of the thermoplastic umbilical hoses used for transportation of hydrocarbon fluids.

Abstract: Disclosed is a thermoplastic vulcanizate composition with a dispersed phase of a rubber, partially cured in a phenolic resin curing agent, and a continuous thermoplastic phase including at least one thermoplastic polymer, where the composition has one or more of the following properties: (i) an epoxidized soy bean oil is added after the partial curing of the rubber phase; (ii) a combination of an alkyl radical scavenger and an alkyl phosphite is added during the partial curing of the rubber phase; (iii) the thermoplastic phase has ?10 wt % polypropylene having a heat of fusion >80 J/g, and the composition includes (a) stannous chloride; (b) a non-basic hindered amine light stabilizer; and/or (c) both (a) and (b); and (iv) where (i) to (iii) include carbon black in the composition.

Abstract: In an embodiment, a thermoplastic vulcanizate (TPV) composition is provided. The TPV composition includes a thermoplastic polyolefin; and an ethylene based copolymer rubber, wherein the ethylene based copolymer rubber has: a Mw of from 500,000 g/mol to 3,000,000 g/mol, a Mw/Mn of 4.0 or lower, and a g?vis of 0.90 or greater. In another embodiment, a TPV composition includes a thermoplastic phase and an ethylene-propylene-diene terpolymer, wherein the thermoplastic vulcanizate composition has: a hardness of from 20 Shore A to 60 Shore D; and a stress relaxation slope of ?1 to ?5 (l/min) as measured by an Elastocon stress relaxation instrument.

Abstract: In another embodiment, a TPV composition includes an ethylene based copolymer, a thermoplastic polyolefin, and one or more of an oil or a plasticizer. The ethylene based copolymer has an Mw of from 400,000 g/mol to 3,000,000 g/mol, a Mw/Mn of 10 or less, and a g?vis of 0.7 or more. An amount of the one or more of an oil or a plasticizer in the TPV composition is from 10 parts by weight to 200 parts by weight per 100 parts by weight of the ethylene based copolymer, and the TPV composition has an extrusion surface roughness that is from 50 ?in to 120 ?in. In another embodiment is provided a method of forming a TPV composition. In another embodiment is provided a method of forming an article that includes a TPV composition. In another embodiment is provided an article that includes a TPV composition.

Abstract: In an embodiment, a thermoplastic vulcanizate (TPV) composition is provided. The TPV composition includes a thermoplastic polyolefin; and an ethylene based copolymer rubber, wherein the ethylene based copolymer rubber has: a Mw of from 500,000 g/mol to 3,000,000 g/mol, a Mw/Mn of 4.0 or lower, and a g?vis of 0.90 or greater. In another embodiment, a TPV composition includes a thermoplastic phase and an ethylene-propylene-diene terpolymer, wherein the thermoplastic vulcanizate composition has: a hardness of from 20 Shore A to 60 Shore D; and a stress relaxation slope of ?1 to ?5 (1/min) as measured by an Elastocon stress relaxation instrument.

Abstract: Foam pellets comprising a thermoplastic vulcanizate (TPV) and thermo-expandable microspheres, the foam pellet having a specific gravity of 0.2 to 1.0 and the TPV being composed of an at least partially vulcanized rubber component and a thermoplastic component. The foam pellets may be subsequently processed to form various foam articles without the need to include a foaming agent during processing.

Abstract: A flexible conduit used for transportation of hydrocarbon fluids for off-shore and on-shore oil and gas applications includes an inner pressure sheath, at least one reinforcing layer at least partially disposed around the pressure sheath, an outer protective sheath at least partially disposed around the at least one reinforcing layer, and optionally a thermally insulating layer disposed between the at least one reinforcing layer and the outer protective sheath. At least one of the inner pressure sheath, outer protective sheath, and the thermally insulating layer is manufactured using a thermoplastic blend (TPB) composition. The TPB compositions disclosed herein are useful for the formation of at least one polymer layer of the thermoplastic umbilical hoses used for transportation of hydrocarbon fluids.

Abstract: Disclosed is a thermoplastic vulcanizate composition with a dispersed phase of a rubber, partially cured in a phenolic resin curing agent, and a continuous thermoplastic phase including at least one thermoplastic polymer, where the composition has one or more of the following properties: (i) an epoxidized soy bean oil is added after the partial curing of the rubber phase; (ii) a combination of an alkyl radical scavenger and an alkyl phosphite is added during the partial curing of the rubber phase; (iii) the thermoplastic phase has ?10 wt % polypropylene having a heat of fusion >80 J/g, and the composition includes (a) stannous chloride; (b) a non-basic hindered amine light stabilizer; and/or (c) both (a) and (b); and (iv) where (i) to (iii) include carbon black in the composition.

Abstract: In an embodiment, a thermoplastic vulcanizate (TPV) composition is provided. The TPV composition includes a thermoplastic polyolefin; and an ethylene based copolymer rubber, wherein the ethylene based copolymer rubber has: a Mw of from 500,000 g/mol to 3,000,000 g/mol, a Mw/Mn of 4.0 or lower, and a g?vis of 0.90 or greater. In another embodiment, a TPV composition includes a thermoplastic phase and an ethylene-propylene-diene terpolymer, wherein the thermoplastic vulcanizate composition has: a hardness of from 20 Shore A to 60 Shore D; and a stress relaxation slope of ?1 to ?5 (1/min) as measured by an Elastocon stress relaxation instrument.

Abstract: Thermoplastic vulcanizates (TPVs) may comprise a vulcanizable elastomer rubber, a thermoplastic polymer, and a plasticizer, wherein the plasticizer comprises a solid resin. Methods include introducing to a blender a masterbatch comprising a first thermoplastic polymer and a curative, a vulcanizable elastomer rubber, a second thermoplastic polymer, and 25 parts to 250 parts of a plasticizer by weight of the vulcanizable elastomer rubber. The first and second thermoplastic polymers combined are 20 parts to 250 parts by weight of the vulcanizable elastomer rubber, and the plasticizer comprises a solid resin. The masterbatch, thermoplastic resin, and plasticizer are then dynamically vulcanized in at least a portion of the vulcanizable elastomer rubber to form a thermoplastic vulcanizate.

Abstract: A masterbatch for use in the production of thermoplastic vulcanizates comprises stannous chloride powder and zinc oxide powder encapsulated together in a polymer, such as an ethylene propylene diene terpolymer.

Abstract: A masterbatch for use in the production of thermoplastic vulcanizates comprises stannous chloride powder and zinc oxide powder encapsulated together in a polymer, such as an ethylene propylene diene terpolymer.

Abstract: Provided herein is a process for making a grafted cross-linked polymer blend, by polymerizing a first and second polymer solution (each having 75 to 99 wt % propylene-derived units, 1 to 25 wt % ethylene-derived units, and 0.05 to 6 wt % diene-derived units); combining the first and second polymer solution to produce a polymer blend solution; removing solvent from the polymer blend solution to produce a polymer blend; mixing the polymer blend with a coagent and a vinyl-terminated silane compound; subjecting the polymer blend to electron beam irradiation to grafting the vinyl-terminated silane compound to either or both of the first polymer and the second polymer to form a grafted polymer blend; and moisture curing the grafted polymer blend to form a grafted cross-linked polymer blend, wherein the grafted cross-linked polymer blend is substantially free of peroxide.

Abstract: A method for forming a composition comprising a propylene-based polymer and a co-agent is provided. The method comprises introducing a propylene-based polymer to an extruder and introducing the co-agent to the extruder at a position within the extruder where the temperature is from 23° C. to 125° C.

Abstract: Provided herein is a process for making a grafted cross-linked polymer blend, by polymerizing a first and second polymer solution (each having 75 to 99 wt % propylene-derived units, 1 to 25 wt % ethylene-derived units, and 0.05 to 6 wt % diene-derived units); combining the first and second polymer solution to produce a polymer blend solution; removing solvent from the polymer blend solution to produce a polymer blend; mixing the polymer blend with a coagent and a vinyl-terminated silane compound; subjecting the polymer blend to electron beam irradiation to grafting the vinyl-terminated silane compound to either or both of the first polymer and the second polymer to form a grafted polymer blend; and moisture curing the grafted polymer blend to form a grafted cross-linked polymer blend, wherein the grafted cross-linked polymer blend is substantially free of peroxide.

Abstract: A method for forming a composition comprising a propylene-based polymer and a co-agent is provided. The method comprises introducing a propylene-based polymer to an extruder and introducing the co-agent to the extruder at a position within the extruder where the temperature is from 23° C. to 125° C.