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.

A coating material capable of forming a film that is free of squeakiness and is less likely to suffer staining of clothing dye on the surface of a base such as a rubber molded article. The coating material contains fluororesin primary particles having an average particle size of 0.2 to 200 nm, a curable silicone resin in an amount of 0.1 to 250 mass % relative to the fluororesin primary particles, and water.

Provided are: an elastomer structure containing carbon nanotubes; and a method for producing the elastomer structure. In a CNT elastomer having a mesh shaped carbon nanotube aggregate on a surface layer thereof, the mesh shaped carbon nanotube aggregate can impart a shape-retaining property to the elastomer. Therefore, the elastomer can be molded along the shape of a mold, and it becomes possible to mold a carbon nanotube elastomer having a fine dimension. The elastomer structure containing carbon nanotubes according to the present invention is provided with mesh shaped carbon nanotube aggregate which are embedded in a surface layer of the elastomer structure containing carbon nanotubes and are not protruded from the surface of the elastomer structure containing carbon nanotubes.

A fluororubber molded product according to the present invention is obtained by the steps of molding and crosslinking a fluororubber composition and thereafter immersing the composition in a fluorocarbon or an aqueous solution containing a fluorocarbon at a concentration of not less than 10% by volume.

A phase-separated polymeric composition is provided that comprises a first phase including polyurethane domains and a second phase including a butyl rubber matrix. A method is also provided for producing a polymer composition. The method includes providing a masterbatch composition that is prepared by combining a halogenated butyl rubber with at least one phenolic resin, introducing the masterbatch composition to a reactor, introducing to the reactor an isocyanate and a polyurethane catalyst to form a blend, and subjecting the blend to conditions sufficient to form a polyurethane.

Provided are methods for surface-modifying a rubber vulcanizate or a thermoplastic elastomer, which can cost-effectively provide a variety of functions, e.g. sliding properties or liquid leakage resistance. Included is a method for surface-modifying a rubber vulcanizate or a thermoplastic elastomer as a modification target, the method including: step 1 of forming polymerization initiation points A on a surface of the modification target; step 2 of radically polymerizing a non-functional monomer starting from the points A to grow non-functional polymer chains; and step 3 of forming polymerization initiation points B on a surface of the non-functional polymer chains, radically polymerizing a polymerizable silane compound starting from the points B, and further reacting a perfluoroether group-containing silane compound to grow functional polymer chains, or step 3 of adding a silane compound to a surface of the non-functional polymer chains and further reacting a perfluoroether group-containing silane compound to grow functional polymer chains.

Provided are a composite material that has a high strength and is superior in both chemical resistance and solvent resistance; and a production method capable of relatively easily and industrially advantageously producing such composite material. The composite material includes a fiber base material; and a cured product of a curable liquid fluorine-containing composition that contains a curable liquid fluorine-containing compound, wherein the fiber base material and the cured product are integrally formed with each other. The production method includes a step of uniformly impregnating the fiber base material with the curable liquid fluorine-containing composition; a step of defoaming the fiber base material uniformly impregnated with the curable liquid fluorine-containing composition; and a step of curing the curable liquid fluorine-containing composition uniformly impregnating the defoamed fiber base material.

A phase-separated polymeric composition comprising a first phase including polyurethane domains; and a second phase including a butyl rubber matrix.

The present disclosure relates to methods of removing brominated contaminants from polystyrene waste and recovering the brominated contaminants. The present disclosure further relates to methods of recycling polystyrene waste, wherein the recycling comprises retention of brominated contaminants or removal of contaminants. The present disclosure also relates to use of monocyclic aromatic benzenic solvents in the removal and/or recovery of brominated contaminants from polystyrene waste and in the recycling of polystyrene waste. Moreover, the present disclosure relates to use of the recovered brominated contaminants in the manufacture of polystyrene products such as insulation.

A fluororubber composition comprising 0.1 to 1 parts by weight of a compound represented by the general formula:

##STR00001##

(wherein any two of R.sub.1, R.sub.2, and R.sub.5 are lower alkyl groups having 1 to 5 carbon atoms, preferably a tert-butyl group or a tert-amyl group, and the remaining one is hydrogen, and X is a methyl group or a hydroxyl group) and having a number average molecular weight Mn of 200 to 300, based on 100 parts by weight of peroxide-crosslinkable fluororubber. The fluororubber composition that can be vulcanized at a high speed and has excellent scorch stability. Moreover, the crosslinked product can obtain stable product quality.