The invention pertains to certain composite materials featuring strong direct bonds between certain fluoropolymers and polyamides, which can be formed by using as additive certain chlorotrifluoroethylene-containing elastomers, in an ionic curable blend.

The invention pertains to certain composite materials featuring strong direct bonds between certain fluoropolymers and polyamides, which can be formed by using as additive certain chlorotrifluoroethylene-containing elastomers, in an ionic curable blend.

The present invention relates to a process comprising the step of melt-mixing a semi-aromatic polyamide (A) having a melting point on second heating of 295° C. or less comprising terephthalamide repeat units and a polyamide oligomer (B) comprising terephthalamide repeat units and having an amine end group concentration of less than 2000 me q/Kg and an inherent viscosity of at least 0.10, at a temperature which is greater than the melting point on first heating of both semi-aromatic polyamide (A) and polyamide oligomer (B) for a time period sufficient to produce semi-aromatic polyamide (C) having a melting point on second heating which is greater than or equal to 300° C.

To provide a novel material that maintains suppleness which is the advantage of a material using fibers and has a low thermal shrinkage ratio, and a method for producing the material, a partially welded material using the material, a composite material, and a method for producing a molded product. A material including: a first region, a fiber region, and a second region continuously in a thickness direction; the first region and the second region being each independently a resin layer including from 20 to 100 mass % of a thermoplastic resin component and from 80 to 0 mass % of reinforcing fibers; the fiber region including from 20 to 100 mass % of thermoplastic resin fibers and from 80 to 0 mass % of reinforcing fibers; the thermoplastic resin component included in the first region and the thermoplastic resin component included in the second region each independently having a crystallization energy during temperature increase of 2 J/g or greater, measured by differential scanning calorimetry; and the thermoplastic resin fibers included in the fiber region having a crystallization energy during temperature increase of less than 1 J/g, measured by differential scanning calorimetry; wherein the crystallization energy during temperature increase is a value measured by using a differential scanning calorimeter (DSC) in a nitrogen stream while heating is performed from 25° C. to a temperature that is 20° C. higher than a melting point of the thermoplastic resin component or the thermoplastic resin fibers at a temperature increase rate of 10° C./min.

To provide a novel material that maintains suppleness which is the advantage of a material using fibers and has a low thermal shrinkage ratio, and a method for producing the material, a partially welded material using the material, a composite material, and a method for producing a molded product. A material including: a first region, a fiber region, and a second region continuously in a thickness direction; the first region and the second region being each independently a resin layer including from 20 to 100 mass % of a thermoplastic resin component and from 80 to 0 mass % of reinforcing fibers; the fiber region including from 20 to 100 mass % of thermoplastic resin fibers and from 80 to 0 mass % of reinforcing fibers; the thermoplastic resin component included in the first region and the thermoplastic resin component included in the second region each independently having a crystallization energy during temperature increase of 2 J/g or greater, measured by differential scanning calorimetry; and the thermoplastic resin fibers included in the fiber region having a crystallization energy during temperature increase of less than 1 J/g, measured by differential scanning calorimetry; wherein the crystallization energy during temperature increase is a value measured by using a differential scanning calorimeter (DSC) in a nitrogen stream while heating is performed from 25° C. to a temperature that is 20° C. higher than a melting point of the thermoplastic resin component or the thermoplastic resin fibers at a temperature increase rate of 10° C./min.

The method for manufacturing a photosensitive resin composition of the present invention is a method for manufacturing a photosensitive resin composition containing an amide bond-containing precursor having a repeating unit represented by General Formula (1), the method including a step of obtaining an activated carboxylic acid material by activating a carboxylic acid compound represented by General Formula (2) and a step of obtaining the amide bond-containing precursor by allowing an amine compound represented by General Formula (3) to act on the activated carboxylic acid material, in which at least either the step of obtaining an activated carboxylic acid material and the step of obtaining the amide bond-containing precursor is performed in a solvent containing a carbonyl group-containing heterocyclic compound.

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The present invention relates to an apparatus and a process for preparing a polyamide. Specifically, the present invention relates to an apparatus and a process for preparing a polyamide that enhances the degree of fixation of a diamine during the polycondensation of a diamine and a dicarboxylic acid. The apparatus and process for preparing a polyamide according to an embodiment of the present invention are capable of enhancing the degree of fixation of a diamine during the polycondensation reaction of a diamine and a dicarboxylic acid.

The present invention relates to an apparatus and a process for preparing a polyamide. Specifically, the present invention relates to an apparatus and a process for preparing a polyamide that enhances the degree of fixation of a diamine during the polycondensation of a diamine and a dicarboxylic acid. The apparatus and process for preparing a polyamide according to an embodiment of the present invention are capable of enhancing the degree of fixation of a diamine during the polycondensation reaction of a diamine and a dicarboxylic acid.

Methods for preparing mixed polyamides, polyimides and polyamideimides under hydrothermal polymerization conditions are provided. The methods are based on suitable mixtures of poly carboxylic acids, poly carboxylic dianhydrides or poly carboxylic acid chloride anhydrides and polyamines and provide routes to low cost structural polymers useful in, for example, infrastructure applications.

Described herein is a thermoplastic molding composition, including A) from 10 to 60% by weight of a thermoplastic semicrystalline polyamide-6, B) from 5 to 50% by weight of a thermoplastic semiaromatic semicrystalline polyamide containing repeating units of hexamethylenediamine and terephthalic acid, C) from 10 to 65% by weight of fibrous and/or particulate fillers, and D) from 0 to 30% by weight of further additives,

where the total of the percentages by weight of components A) to D) is 100%.