Abstract: In some embodiments, a process for producing a cyclic olefin includes introducing a polymer to a metathesis catalyst in a reaction vessel under reaction conditions. The process includes obtaining a cyclic olefin product comprising the cyclic olefin. In some embodiments, a process for producing a cyclic olefin includes introducing an article comprising a polymer to a metathesis catalyst in a reaction vessel under reaction conditions. The process includes obtaining a cyclic olefin product comprising the cyclic olefin.

Abstract: A method for increasing the melt strength of a polyolefin polymer composition is provided. The method includes mixing a first polyolefin composition derived from at least one olefin polymerization catalyst (a) and at least one olefin polymerization catalyst (b) with a second polyolefin composition derived from the at least one olefin polymerization catalyst (b) or from at least one olefin polymerization catalyst (c), and obtaining the polyolefin polymer composition.

Abstract: A method for increasing the melt strength of a polyolefin polymer composition is provided. The method includes mixing a first polyolefin composition derived from at least one olefin polymerization catalyst (a) and at least one olefin polymerization catalyst (b) with a second polyolefin composition derived from the at least one olefin polymerization catalyst (b) or from at least one olefin polymerization catalyst (c), and obtaining the polyolefin polymer composition.

Abstract: Disclosed is an article comprising polymers and copolymers selected from the group consisting of poly(vinylbiphenyl), poly(vinylcyclohexylstyrene), substituted versions thereof, and blends thereof, the polymer or copolymer having a weight average molecular weight (Mw) of at least 100 kg/mole and a glass transition temperature (Tg) of at least 100° C. The polymers are desirably processed in the melted state at a temperature of at least 150° C. to impart orientation and extensional strain hardening.

Abstract: Strain-induced articles such as foamed, blow molded, or thermoformed articles comprising styrenic copolymers such as poly(vinylbiphenyl-co-styrene) having improved strain hardening and extensional viscosity for foaming and other applications, having a weight average molecular weight (Mw) of at least 100 kg/mole, comprising within the range from 5 to 80 wt % styrene derived units, and a process to form such styrenic copolymers, the process comprising combining styrene, a second aryl-containing monomer such as 4-vinylbiphenyl, and an initiator.

Abstract: Disclosed is an article comprising polymers and copolymers selected from the group consisting of poly(vinylbiphenyl), poly(vinylcyclohexylstyrene), substituted versions thereof, and blends thereof, the polymer or copolymer having a weight average molecular weight (Mw) of at least 100 kg/mole and a glass transition temperature (Tg) of at least 100° C. The polymers are desirably processed in the melted state at a temperature of at least 150° C. to impart orientation and extensional strain hardening.

Abstract: Coatings for zirconium alloy components of nuclear reactor fuel assemblies are described. The coating consists of a metal silicate binder, particles of burnable-poison particles, such as boron carbide, optional graphite particles and an optional rheology-enhancing component. The coating is deposited from a liquid suspension which also includes a polar solvent.

Abstract: A fuel element for a nuclear reactor is described having a zirconium alloy cladding tube, with a thin coating of a metal silicate and particles of enriched boron-containing compound burnable-poison particles, such as ZrB.sub.2, deposited from a liquid suspension which includes a polymer binder material and water and/or alcohol as a diluent.

Abstract: A removable and reusable cap for fuel rod ends to prevent grid damage during loading permits fuel end configurations to match utility's special tooling for fuel assembly repair and reconstitution. The elastomeric transitory fuel rod guidance ends expand over a flange and temporarily snap into place in a groove in the fuel rod end to provide a tapered guiding surface.