Abstract: In at least one embodiment, a devolatilization vessel includes a first set of one or more devolatilization plates and a second set of one or more devolatilization plates. A first distributor is above the first set of one or more devolatilization plates and the second set of one or more devolatilization plates. A second distributor is above the second set of one or more devolatilization plates. In at least one embodiment, a process of forming a polymer includes forming a first polymer solution having a first viscosity and forming a second polymer solution having a second viscosity. The process includes flowing the first polymer solution and the second polymer solution to a devolatilization vessel. The process includes removing volatiles from the first polymer solution and the second polymer solution in the devolatilization vessel to form a devolatilized first polymer melt and a devolatilized second polymer melt.

Abstract: In at least one embodiment, a devolatilization vessel includes a first set of one or more devolatilization plates and a second set of one or more devolatilization plates. A first distributor is above the first set of one or more devolatilization plates and the second set of one or more devolatilization plates. A second distributor is above the second set of one or more devolatilization plates. In at least one embodiment, a process of forming a polymer includes forming a first polymer solution having a first viscosity and forming a second polymer solution having a second viscosity. The process includes flowing the first polymer solution and the second polymer solution to a devolatilization vessel. The process includes removing volatiles from the first polymer solution and the second polymer solution in the devolatilization vessel to form a devolatilized first polymer melt and a devolatilized second polymer melt.

Abstract: This invention relates to processes for the preparation of a dynamically vulcanized alloy comprising at least one isobutylene-containing elastomer and at least one thermoplastic resin. More specifically, the processes produce dynamically vulcanized alloys with unique morphological features which have good impermeability and low temperature flexibility.

Abstract: This invention relates to processes for the preparation of a dynamically vulcanized alloy comprising at least one isobutylene-containing elastomer and at least one thermoplastic resin. More specifically, the processes produce dynamically vulcanized alloys with unique morphological features which have good impermeability and low temperature flexibility.

Abstract: The invention provides a method for increasing the viscosity of halogenated (brominated) elastomeric copolymers of a C4 to C7 isomonoolefin (isobutylene) and a para-alkylstryrene (p-methylstyrene) by mixing the copolymer with a silica or clay particulate filler which has been contacted with an aminosilane containing at least one C1 to C4 alkoxy group and at least one primary, secondary or tertiary amine group. The resulting elastomer compositions are used to prepare thermoplastic elastomer blend compositions, containing more finely dispersed elastomers which results in compositions having improved mechanical properties.

Abstract: The invention provides a method for increasing the viscosity of C4–C7 isoolefin copolymers including halomethylstyrene derived units by mixing the copolymer with a hindered amine or phosphine of the structure R1 R2 R3 N or R1 R2 R3 P wherein R1, R2 and R3 are preferably lower and higher alkyl groups. The resulting ionically associated, amino or phosphine modified elastomers are used to prepare thermoplastic elastomer blend compositions, including dynamically vulcanized compositions, containing more finely dispersed elastomers which results in compositions having improved mechanical properties.

Abstract: The invention provides a method for increasing the viscosity of halogenated (brominated) elastomeric copolymers of a C4 to C7 isomonoolefin (isobutylene) and a para-alkylstryrene (p-methylstyrene) by mixing the copolymer with a silica or clay particulate filler which has been contacted with an aminosilane containing at least one C1 to C4 alkoxy group and at least one primary, secondary or tertiary amine group. The resulting elastomer compositions are used to prepare thermoplastic elastomer blend compositions, containing more finely dispersed elastomers which results in compositions having improved mechanical properties.

Abstract: The invention provides a method for increasing the viscosity of C4-C7 isoolefin copolymers including halomethylstyrene derived units by mixing the copolymer with a hindered amine or phosphine of the structure R1 R2 R3 N or R1 R2 R3 P wherein R1, R2 and R3 are preferably lower and higher alkyl groups. The resulting ionically associated, amino or phosphine modified elastomers are used to prepare thermoplastic elastomer blend compositions, including dynamically vulcanized compositions, containing more finely dispersed elastomers which results in compositions having improved mechanical properties.