A polyarylether-based polymer with side chain in polyethylene glycol structure, a solid polymer electrolyte and preparation methods therefor are disclosed. The main chain of the polymer has a polymer structure containing a polyarylether group, the side chain has a polyethylene glycol structure, and the structural formula of the polyarylether-based polymer is as follows:

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and the preparation method for the polyarylether-based polymer with side chain in polyethylene glycol structure comprises: step (1): preparing a polymer containing a polyarylether group; and step (2): dissolving the polymer containing a polyarylether group and polyethylene glycol in a solvent, then adding a catalyst, dripping a coupling agent after the catalyst is dissolved, and conducting reaction while stirring to obtain the polyarylether-based polymer with side chain in polyethylene glycol structure. The all-solid polymer electrolyte prepared by the present invention has favorable ionic conductivity and excellent heat resistance, high temperature resistance and mechanical strength.

Compositions and methods for a semicrystalline poly(aryl ether ketone) copolymers incorporating 2-benzimidazolinone and 4,4′-biphenol as comonomer units with 4,4′-dihalobenzophenone, and compositions and methods for semicrystalline poly(aryl ether ketone) copolymers incorporating 2-benzimidazolinone and 4,4′-biphenol as comonomer units with 1,4-bis(4-dihalobenzoyl)benzene are described herein. The Copolymers have advantageous properties, particularly in terms of high glass transition temperatures (T.sub.g), high melting temperatures (T.sub.m), crystallinity and chemical resistance. The copolymers are suitable for manufacturing high temperature and chemical resistance molded systems and other articles of manufacture via injection molding, extrusion, compression molding, coating, and additive manufacturing.

A polyisoindolinone includes 1-100 mole percent of isoindolinone ether ketone units of the formula A; and 0-99 mole percent of arylene ether ketone units of the formula B wherein the variables are as defined herein; and wherein when the polyisoindolinone is a poly(isoindolinone ether ether ketone), it has a least one, preferably at least two, preferably all of the following properties: a glass transition temperature greater than 150° C., or 150-270° C. as determined by differential scanning calorimetry, less than 25 weight percent solubility at 23° C. in dichloromethane, orthodichlorobenzene, or chloroform, or substantially no blue phosphorescence in response to irradiation with ultraviolet light of 320-400 nm.

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A method of preparation of a cardo polyetherketone structural foam material, including the following steps: 1) performing a mould pressing on a cardo polyetherketone resin by a high-temperature vulcanizing machine to prepare a foaming billet; 2) placing the foaming billet in a foaming cavity of a mould-pressing machine, performing a penetration and a swelling by introducing a supercritical fluid to achieve diffusion equilibrium, forming a polymer-supercritical fluid homogeneous solution, and 3) making the polymer-supercritical fluid homogeneous solution supersaturated through a sudden release of the inner pressure of the system, thereby inducing nucleation and foaming, and finally forming a structural foam having a closed pore structure with a uniform pore size and an adjustable pore density. The production process of the present invention is clean, environmentally friendly, and has relatively high efficiency. The obtained structural foam has good mechanical properties.

The present invention provides compounds, especially polymeric compounds, having at least one imidazole and/or imidazolium structural unit, a process for preparation thereof and for the use thereof.

A polymer composition that includes, based on the total weight of the polymers: 1-99 weight percent, of a polymer component comprising a polyarylether ketone, a polybenzimdazole, a polyimide, a poly(aryl ether sulfone), a poly(phenylene sulfide), or a combination comprising at least one of the foregoing; and 1-99 weight percent, of a polyisoindolinone, wherein the polyisoindolinone comprises: 1-100 mole percent, preferably 5-100 mole percent, of isoindolinone ether ketone units of the formula (I) and 0-99 mole percent, of arylene ether ketone units of the formula (II) wherein the variables are as defined herein. ##STR00001##

A method of preparation of a cardo polyetherketone structural foam material, including the following steps: 1) performing a mould pressing on a cardo polyetherketone resin by a high-temperature vulcanizing machine to prepare a foaming billet; 2) placing the foaming billet in a foaming cavity of a mould-pressing machine, performing a penetration and a swelling by introducing a supercritical fluid to achieve diffusion equilibrium, forming a polymer-supercritical fluid homogeneous solution, and 3) making the polymer-supercritical fluid homogeneous solution supersaturated through a sudden release of the inner pressure of the system, thereby inducing nucleation and foaming, and finally forming a structural foam having a closed pore structure with a uniform pore size and an adjustable pore density. The production process of the present invention is clean, environmentally friendly, and has relatively high efficiency. The obtained structural foam has good mechanical properties.

Aromatic polymers exhibiting thermal stability and conductivity upon imbibement into an acid are disclosed for electrochemical gas sensor applications. Membrane electrode assemblies for electrochemical gas sensors are also provided, comprising a sensing electrode, a counter electrode, and a polymer membrane comprising the polymers of the present invention, disposed between the sensing electrode and the counter electrode.

Compositions and methods for a melt processable semicrystalline poly(aryl ether ketone) incorporating phthalazinone and 4,4-biphenol as comonomer units are described herein. The polymers are resistant to and insoluble in common organic solvents and liquids as well as in aggressive organic solvents such as chloroform and chlorinated liquids. The polymers are melt processable via techniques such as extrusion, injection molding, and compression molding. The semicrystalline poly(aryl ether ketone) containing phthalazinone comonomer units have properties which make them suitable for manufacturing high temperature resistant molded systems and other articles.

This disclosure relates to a curable composition that includes at least one maleimide-containing compound or benzoxazine compound, at least one low dielectric loss polymer or a hydrogenated derivative thereof, at least one filler, and at least one radical initiator. This disclosure also relates to using the composition to form a film, a laminate, and/or a circuit board.