A superconducting coil device (10) includes: a coil case (20) housing a superconducting coil (30); a superconducting coil (30) housed in the coil case (20); and a resin part (50) formed of a polymer (51) filled in a gap between an inner wall of the coil case (20) and the superconducting coil (30). The resin part (50) is formed of a polymer (51) obtained by polymerizing a polymerizable composition containing a first monomer having a norbornene ring structure.

Described herein are compositions having an eight-membered monocyclic unsaturated hydrocarbon, methods and system to separate the eight-membered monocyclic unsaturated hydrocarbon at from a hydrocarbon mixture including additional nonlinear unsaturated C.sub.8H.sub.2m hydrocarbons with 4≤m≤8, by contacting the hydrocarbon mixture with a 10-ring pore molecular sieve having a sieving channel with a 10-ring sieving aperture with a minimum crystallographic free diameter greater than 3 Å and a ratio of the maximum crystallographic free diameter to the minimum crystallographic free diameter between 1 and 2, the molecular sieve having a T1/T2 ratio ≥20:1 wherein T1 is an element independently selected from Si and Ge, and T2 is an element independently selected from Al, B and Ga, the 10-ring pore molecular sieve further having a counterion selected from NH.sub.4.sup.+, Li.sup.+, Na.sup.+, K.sup.+ and Ca.sup.+.

A polymer composition contains, based on a total weight of the polymer composition: a) 40 wt. % to 99 wt. % of a polyalkenamer derived from at least one cycloalkene having 5 to 12 carbon atoms, and b) 1 wt% to 60 wt. % of graphene. The polyalkenamer has a trans-isomer content larger than 50)wt.° /0 based on a weight of the polyalkenamer. A moulded article can be produced from the polymer composition, which can be a board, a film, a bristle, or a foam. The moulded article can be used as a clothing element, sport element, sealing material, electrically conductive article, friction control element, transportation element, or structural element.

A polymer compound including a repeating unit represented by Formula: ##STR00001##
wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, a1, a2, and a11 in Formula 1 are as defined in the specification.

A method of rapidly forming an elastomer with tunable properties is described herein. The method includes preparing a monomer solution comprising a catalyst and one or more monomers including 1,5-cyclooctadiene (COD). The one or more monomers may further include dicyclopentadiene (DCPD), and each of the COD and the DCPD may be present in the monomer solution at a predetermined volume percentage. A region of the monomer solution is activated to initiate an exothermic polymerization reaction and generate a self-propagating polymerization front, which moves through the monomer solution and polymerizes the one or more monomers. Thus, an elastomer having predetermined properties is rapidly formed.

The invention relates to 1) a hydrocarbonated polymer comprising two alcoxysilane end groups of formula (1), and 2) a method for producing said polymer, an adhesive composition comprising said polymer and the use of said adhesive composition.

##STR00001##

A dental appliance made of an olefin polymer is directly formed via rapid prototyping without the use of an intermediary physical mold. A polymer precursor solution includes one or more olefin-containing monomers and/or oligomers, an olefin polymerization catalyst, and a UV absorbing agent to limit penetration of the UV light through the polymer precursor solution. One or more reactions of the polymer precursor solution are modulated in response to UV light, and the polymer precursor solution may further include an inhibitor (quenching agent) configured to modulate those reactions. The polymer precursor solution can be deposited using UV-cured stereolithographic or 3D printing methods to form appliances exhibiting improved elongation at break characteristics and suitable stress resistance.

The present invention relates to a method for the polymerization of cycloolefins by ring-opening metathesis. The reaction is carried out in the presence of at least one particular catalyst, selected from the ruthenium alkylidene complexes comprising at least one 1-aryl-3-cycloalkyl-imidazolin-2-ylidene ligand and mixtures thereof. The invention also relates to a kit for implementing this method.

The invention provides: imidazole and imidazolium compounds of formulas (I) and (II): ##STR00001##
polymers containing a plurality of imidazolium-containing repeating units of formula (III′): ##STR00002##
and membranes and devices comprising the polymers. Also provided are methods of making the inventive compounds and polymers.

The present disclosure is directed to methods of making a polymer, including exposing a reaction mixture including a strained cyclic unsaturated monomer and an organic initiator to a stimulus to provide an activated organic initiator, whereby the activated organic initiator is effective to polymerize the strained cyclic unsaturated monomer via a 4-membered carbocyclic intermediate to provide a polymer having constitutional units derived from the strained cyclic unsaturated monomer.