An anion exchange membrane is made by mixing 2 trifluoroMethyl Ketone [nominal] (1.12 g, 4.53 mmol), 1 Biphenyl (0.70 g, 4.53 mmol), methylene chloride (3.0 mL), trifluoromethanesulfonic acid (TFSA) (3.0 mL) to produce a pre-polymer. The pre-polymer is then functionalized to produce an anion exchange polymer. The pre-polymer may be functionalized with trimethylamine in solution with water. The pre-polymer may be imbibed into a porous scaffold material, such as expanded polytetrafluoroethylene to produce a composite anion exchange membrane.

An anion exchange polymer includes aryl ether linkage free polyarylenes having aromatic/polyaromatic rings in polymer backbone and a tethered alkyl quaternary ammonium hydroxide side groups. This anion exchange polymer may be utilized in an anion exchange process and may be made into a thin anion transfer membrane. An ion transfer membrane may be mechanically reinforced having one or more layers of functional polymer based on a terphenyl backbone with quaternary ammonium functional groups and an inert porous scaffold material for reinforcement. An anion exchange membrane may have multilayers of anion exchange polymers which each containing varying types of backbones, varying degrees of functionalization, or varying functional groups to reduce ammonia crossover through the membrane.

Embodiments of the invention relate to a novel class of polymers with superior mechanical properties and chemical stability, as compared to known polymers. These polymers are particularly well suited for use in anion exchange membranes (AEMs), including those employed in fuel cells. Novel methods for the manufacture of these polymers are also described.

Embodiments of the invention relate to a novel class of polymers with superior mechanical properties and chemical stability, as compared to known polymers. These polymers are particularly well suited for use in anion exchange membranes (AEMs), including those employed in fuel cells. Novel methods for the manufacture of these polymers are also described.

A material for forming organic film contains (A) compound shown by general formula (1) and/or polymer having repeating unit shown by general formula (4), and (B) organic solvent. In formula (1), AR1, AR2, AR3, AR4, AR5, and AR6 each represent benzene ring or naphthalene ring; R1 represents any group shown in following formula (2); “n” represents integer of 1 or 2; and W represents divalent organic group having 2-50 carbon atoms. In formula (4), AR1, AR2, AR3, AR4, AR5, AR6, R1, “n”, and W are as defined above; and R2 and R3 each represent hydrogen atom or organic group having 1-20 carbon atoms, and optionally bond to each other within molecule to form cyclic organic group. An object provides a material for forming organic film to enable high etching resistance and excellent twisting resistance without impairing resin-derived carbon content; and compound and polymer suitable for material for forming organic film.

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Embodiments of the invention relate to a novel class of polymers with superior mechanical properties and chemical stability, as compared to known polymers. These polymers are particularly well suited for use in anion exchange membranes (AEMs), including those employed in fuel cells. Novel methods for the manufacture of these polymers are also described.

Embodiments of the invention relate to a novel class of polymers with superior mechanical properties and chemical stability, as compared to known polymers. These polymers are particularly well suited for use in anion exchange membranes (AEMs), including those employed in fuel cells. Novel methods for the manufacture of these polymers are also described.

A polycyclic polyphenolic resin having a repeating unit derived from at least one monomer selected from the group consisting of an aromatic hydroxy compound represented by the following formulae (1A) and (1B), wherein the repeating units are linked to each other by a direct bond between aromatic rings,

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wherein X represents an oxygen atom, a sulfur atom, a single bond or non-crosslinked state, and Y represents a 2n-valent group having 1 to 60 carbon atoms or a single bond, wherein when X is non-crosslinked state, Y represents the 2n-valent group; A represents a benzene ring or a fused ring; each R.sup.0 is independently an alkyl group having 1 to 40 carbon atoms and optionally having a substituent, an aryl group having 6 to 40 carbon atoms and optionally having a substituent, an alkenyl group having 2 to 40 carbon atoms and optionally having a substituent, an alkynyl group having 2 to 40 carbon atoms, an alkoxy group having 1 to 40 carbon atoms and optionally having a substituent, a halogen atom, a thiol group, or a hydroxy group, wherein at least one R.sup.0 is a hydroxy group; and each m is independently an integer of 1 to 9; and n is an integer of 1 to 4; and each p is independently an integer of 0 to 3.

The present disclosure to an electrolyte membrane containing a polyfluorene-based ionomer, and more particularly, to an electrolyte membrane containing a polyfluorene-based ionomer which has a fluorene main chain composed of only a carbon-carbon bond and a side chain composed of a perfluorosulfonic acid group. The electrolyte membrane containing the polyfluorene-based ionomer has high proton conductivity, excellent chemical durability, excellent mechanical property, and excellent volume stability.

Embodiments of the invention relate to a novel class of polymers with superior mechanical properties and chemical stability, as compared to known polymers. These polymers are particularly well suited for use in anion exchange membranes (AEMs), including those employed in fuel cells. Novel methods for the manufacture of these polymers are also described.