The present disclosure is directed to methods for at least partially removing a dye from a dyed fiber comprising one or more polyamide or polyester polymers, and products formed thereof.

The present disclosure is directed to methods for at least partially removing a dye from a dyed fiber comprising one or more polyamide or polyester polymers, and products formed thereof.

A novel polymer having self-healing properties is provided. The polyamide compound contains a dicarboxylic acid unit represented by the following formula (1) and a diamine unit represented by the following general formula (2). This polyamide compound is excellent in self-healing properties. ##STR00001##

A novel polymer having self-healing properties is provided. The polyamide compound contains a dicarboxylic acid unit represented by the following formula (1) and a diamine unit represented by the following general formula (2). This polyamide compound is excellent in self-healing properties. ##STR00001##

A method for producing a polycondensate powder dispersion, wherein the method includes at least one step of polycondensation: i) of at least one diester and at least one diamine, and/or ii) at least one amino ester, while stirring, in a solvent that can solubilize both the diamine and the diester and/or the amino ester but not the polyamide that forms during the polycondensation, at a temperature between 30° C. and the boiling temperature of the solvent, in order to produce a powder precipitate dispersed in the solvent.

A method for producing a polycondensate powder dispersion, wherein the method includes at least one step of polycondensation: i) of at least one diester and at least one diamine, and/or ii) at least one amino ester, while stirring, in a solvent that can solubilize both the diamine and the diester and/or the amino ester but not the polyamide that forms during the polycondensation, at a temperature between 30° C. and the boiling temperature of the solvent, in order to produce a powder precipitate dispersed in the solvent.

A system for forming an article includes a polymer resin formulation formed of a semicrystalline polymer material having a first fiber content and an amorphous polymer material having a second fiber content. The first fiber content is higher than the second fiber content. Further, the semicrystalline and amorphous polymer materials are blended together to form the polymer resin formulation having a blended fiber content of greater than 10% by weight. Moreover, the polymer resin formulation is amorphous. The system also includes a computer numeric control (CNC) device for printing and depositing the polymer resin formulation layer by layer to form the article.

A system for forming an article includes a polymer resin formulation formed of a semicrystalline polymer material having a first fiber content and an amorphous polymer material having a second fiber content. The first fiber content is higher than the second fiber content. Further, the semicrystalline and amorphous polymer materials are blended together to form the polymer resin formulation having a blended fiber content of greater than 10% by weight. Moreover, the polymer resin formulation is amorphous. The system also includes a computer numeric control (CNC) device for printing and depositing the polymer resin formulation layer by layer to form the article.

An object of the present invention is to provide a polyamide porous membrane having improved fluid permeation performance. A polyamide porous membrane having a dense layer formed on at least one surface, wherein the polyamide porous membrane has a streak-like recessed portion extending in one direction of a surface of the dense layer, and the streak-like recessed portion has an orientation angle of 0 to 5.0° or 175.0 to 180.0° and an orientation intensity of 1.5 to 2.0 according to predetermined orientation analysis.

The present invention relates to a polymer composition (C) comprising: —a polyphenylene sulfide (PPS), —at least 3 wt. % of polyamide 6 (PA6), —25 to 60 wt. % of reinforcing agents, —3 to 8 wt. % of a functionalized, non-aromatic elastomer, wherein the weight ratio PPS/PA6 is at least 4 and wherein wt. % are based on the total weight of the composition. The present invention also relates to articles incorporating the polymer composition and the use of polyamide 6 (PA6) as a heat-aging stabilizer in a polymer composition.