A method of making a solid composition by reacting a tetrazine component and a polymer component through an inverse electron demand Diels-Alder reaction (IEDDA). The solid composition formed by the Diels-Alder reaction is in the form of either a foam or a powder depending on the functional groups of the tetrazine component. The polymer component can be various substituted polybutadienes, mixtures of stereoisomeric polydienes, and polybutadiene copolymers. The gas produced during the reaction is nitrogen, hence, the solid composition can be considered a greener material than poiyurethanes, which involves carbon monoxide release during the course of the reaction. The aromatized polymer can act as a built in anti-oxidant with up to two hydrogen atom equivalents per dihydropyridazine group. The polymers of dihydropyridazines are converted to polymeric pyridazine groups by aromatization and the aromatic polymer becomes more stable.

The invention includes methods of reversibly tuning the effective pore size and/or solute rejection selectivity of a nanoporous lyotropic liquid crystal (LLC) polymer membrane. The membranes of the invention have high levels of pore size uniformity, allowing for size discrimination separation, and may be used for separation processes such as liquid-phase separations.

Provided are a thermosetting resin composition and a prepreg, laminate and printed circuit board using same. The thermosetting resin composition comprises a resin component, the resin component comprising a modified cyclic olefin copolymer having a structure as shown in formula I and another unsaturated resin. By introducing a methacrylate end group having a certain polarity into a cyclic olefin copolymer, a modified cyclic olefin copolymer is formed. The modified cyclic olefin copolymer can form a thermosetting material by means of cross-linking with itself or another unsaturated resin, whereby the bonding property can be significantly improved while retaining the excellent dielectric properties of the cyclic olefin copolymer itself. The laminate prepared using the thermosetting resin composition has good dielectric properties, a good peel strength and a good heat resistance, and can meet all the performance requirements for printed circuit board substrates in the current high-frequency and high-speed communication field.

The invention described herein generally pertains to a composition that includes a silyl-terminated polymer having silyl groups linked to a polymer backbone via triazole. The silyl-terminated polymer is a reaction product of a functionalized polymer backbone and a functionalized silane. The polymer backbone includes a first functional group, which may be one of an azide or an alkyne. The functionalized silane includes a second functional group may also be one of an azide or an alkyne, but is also different from the first functional group. The functionalized polymer backbone is reacted with the functionalized silane in the presence of a metal catalyst.

An optical laminate that does not cause a so-called reddening phenomenon even when driven or maintained under extremely harsh conditions (e.g., very high temperature conditions), or a reddening-resistant layer applied thereto.

There is provided a curable composition comprising (A) a cyclic olefin; (B) a metathesis catalyst for polymerizing the cyclic olefin; (C) 0.1-30 wt. % of a compound comprising at least one vinyl group; and (D) 0.1-10 wt. % of a curing agent for compound (C), wherein the wt. % are relative to the total weight of the composition. The composition provides a desirable combination of workability, toughness and heat resistance. Also provided is a molded article comprising the composition and reinforcing fibers, and a method of manufacturing the same.

A rubber composition obtained by dry-mixing a rubber wet masterbatch A containing a carbon black A having a nitrogen adsorption specific: surface area (N.sub.2SA) of NA (m.sup.2/g) with a rubber wet masterbatch B containing a carbon black B having a nitrogen adsorption specific surface area (N.sub.2SA) of NB (m.sup.2/g), wherein the content ratio of the rubber wet masterbatch A to the rubber wet masterbatch B is from 5/95 to 40/60, and when the content proportion of the carbon black A in the rubber wet masterbatch A is represented by LA, and that of the carbon black B in the rubber wet masterbatch B is represented by LB, the specific expressions are satisfied.

A long-length film formed of a resin containing a polymer having crystailizability, wherein the long-length film has an orientation axis perpendicular to a long side direction of the long-length film, the long-length film has an Nz factor Nz1 satisfying (formula 1), the long-length film has a birefringence n satisfying (formula 2), and the polymer has a crystallization degree X satisfying (formula 3):

1.0Nz11.15(formula 1)

0.01n0.1(formula 2)

15%X(formula 3).

The invention is a resin composition containing following polymer (A) and polymer (B), wherein a content of the polymer (A) is 1 to 80 wt % based on the total weight of the polymer (A) and the polymer (B). Polymer (A): an alicyclic structure-containing hydrogenated polymer having a heat distortion temperature of 170 C. or higher Polymer (B): a polymer incompatible with the polymer (A) and having a heat distortion temperature of lower than 170 C., and A microporous film formed by using the resin composition, and A separator including the microporous film, and A secondary battery having the separator.

One aspect of the invention provides a resin composition suitably used as a raw material for a separator of a secondary battery excellent in safety, a microporous film obtained by forming the resin composition, a separator including the microporous film, and a secondary battery having the separator.

The present invention relates to a self-adhesive article comprising a non-random fabric of bundles of carbon fibres and a thermosetting epoxy resin composition. The self-adhesive article exhibits high surface adhesion and excellent dimensional stability at room temperature. The self-adhesive article is ideally suited to reinforce structural components, particularly vehicles or ancillary vehicle components. The structural components reinforced by the self-adhesive article exhibit improved impact and torsional strength.