A polymer composition includes components selected from: (i) at least one a poly(aryl ether ketone) (PAEK), (ii) a poly(ether sulfone) (PES), (iii) a reactive poly(ether sulfone) (rPES), (iv) a reactive poly(aryl ether ketone) (rPAEK), (v) an acid component, and (vi) at least one alkali metal carbonate. Preferably, the polymer composition is free or substantially free of solvent. A method includes melt mixing the components of the polymer composition.

A method for manufacturing 1,4-bis 4-phenoxybenzoyl) benzene, including: providing a reactant mixture including terephthaloyl chloride and diphenyl ether in a solvent; adding a Lewis acid to the reactant mixture, so as to obtain a product mixture; wherein the temperature of the reactant mixture is greater than 5 C. during at least part of the step of adding the Lewis acid to the reactant mixture.

A method for manufacturing 1,4-bis(4-phenoxybenzoyl)benzene, including: reacting terephthaloyl chloride with diphenyl ether in a reaction solvent and in the presence of a Lewis acid, so as to obtain a product mixture comprising a 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex; putting the product mixture in contact with an aqueous solution, so as to obtain an aqueous phase containing the Lewis acid and an organic phase containing 1,4-bis(4-phenoxybenzoyl)benzene.

A method for manufacturing 1,4-bis(4-phenoxybenzoyl)benzene, including: providing terephthaloyl chloride, diphenyl ether, a solvent and a Lewis acid, wherein the terephthaloyl chloride is of a purity grade such that, 10 minutes after introducing it at a reference concentration of 6.5 wt. % into said solvent, at a temperature of 20 C., a solution is obtained having a turbidity of less than 500 NTU; mixing the terephthaloyl chloride, the diphenyl ether and the solvent so as to make a reactant mixture; adding the Lewis acid to the reactant mixture so as to effect the reaction of the terephthaloyl chloride with the diphenyl ether; recovering a product mixture comprising a 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex.

Melt stable polyaryletherketoneketone are prepared by from a reactive, lower molecular weight polyaryletherketoneketone having an ultraviolet absorbance at 455 nm of at least 0.185 when measured in 0.1% solution in dichloroaeetic acid.

The invention relates to a method for manufacturing 1,4-bis(4-phenoxybenzoylbenzene), comprising: providing a reactant mixture comprising terephthaloyl chloride, diphenyl ether and a Lewis acid in a solvent; reacting terephthaloyl chloride with diphenyl ether, so as to obtain a product mixture comprising a 1,4-bis(4-phenoxybenzoylbenzene)-Lewis acid complex;

wherein the 1,4-bis(4-phenoxybenzoylbenzene)-Lewis acid complex is dissolved in the solvent at a 1,4-bis(4-phenoxybenzoylbenzene) weight concentration in the solvent which is higher than the saturation limit of the 1,4-bis(4-phenoxybenzoylbenzene)-Lewis acid complex during at least part of the step of reacting terephthaloyl chloride with diphenyl ether.

A method for manufacturing 1,4-bis(4-phenoxybenzoyl)benzene, including: providing terephthaloyl chloride, diphenyl ether, a solvent and a Lewis acid, wherein the terephthaloyl chloride is of a purity grade such that, 10 minutes after introducing it at a reference concentration of 6.5 wt. % into said solvent, at a temperature of 20 C., a solution is obtained having a turbidity of less than 500 NTU; mixing the terephthaloyl chloride, the diphenyl ether and the solvent so as to make a reactant mixture; adding the Lewis acid to the reactant mixture so as to effect the reaction of the terephthaloyl chloride with the diphenyl ether; recovering a product mixture comprising a 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex.

The invention relates to a method for manufacturing 1,4-bis(4-phenoxybenzoylbenzene), comprising: providing a reactant mixture comprising terephthaloyl chloride and diphenyl ether in a solvent; adding a Lewis acid to the reactant mixture, so as to obtain a product mixture; wherein the temperature of the reactant mixture is greater than 5 C. during at least part of the step of adding the Lewis acid to the reactant mixture.

Aspects of the present disclosure generally describe polyarylether ketones and methods of use. In some aspects, a composition includes one or more polymers of formula (IV):

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Provided are a resin molded body and applications thereof. The resin molded body includes a resin layer containing a resin and a compound represented by Formula (1), and on at least one surface of the resin layer, a protective layer that contains at least one substance selected from the group consisting of urethane resin, acrylic resin, and polysiloxane. In Formula (1), Het.sup.1 represents a divalent 5-membered or 6-membered aromatic heterocyclic residue. X.sup.a, X.sup.b, X.sup.c, and X.sup.d each independently represent a hetero atom, and Y.sup.a, Y.sup.b, Y.sup.c, Y.sup.d, Y.sup.e, and Y.sup.f each independently represent a hetero atom or a carbon atom. A ring bonded to Het.sup.1 may have a double bond at any position.