Abstract: Compounded thermoplastic resin, molding composition, compounded polyamide composition, articles formed from the same, and methods of making the resins/compositions and articles. A compounded thermoplastic resin includes a polyamide composition and a random copolymer composition.

Abstract: The present disclosure relates to glass fiber-filled polyamide compositions. In various aspects, the present disclosure provides a composition including a polyamide having a relative viscosity (RV) of from ?20 to ?36. From ?10 to ?62 weight percent of the composition is glass fibers blended with the polyamide, based on the weight of the polyamide including the glass fibers. The composition can have a polyamide RV of >22 to <30.2, an elongation-at-break of 4% to 20%, at least 5 wt % of the glass fibers have a length of equal to or greater than 700 microns, or a combination thereof.

Abstract: The present invention relates to flame-retardant polyamide compositions. In various aspects, the present invention provides a flame-retardant polyamide composition including a polyamide that is about 30 wt % to about 99 wt % of the composition. The polyamide has a relative viscosity (RV) of ?20 to ?33 as measured as an 8.4 wt % solution in 90% formic acid. The composition also includes one or more flame-retardant additives. Various aspects of the present invention provide compositions having enhanced flame-retardant properties as compared to corresponding compositions including the same or greater concentration of flame-retardant additive but using a polyamide that has an RV that is <20 or >33.

Abstract: The present disclosure relates to a preparation of polymer with improved color and properties. More particularly, the disclosure relates to the preparation of polyamide by introducing a polyetheramine additive during the polymer extrusion step. The extruded polymer is superior in appearance and spinnable in subsequent processing into yarn.

Abstract: Disclosed is a process for making a polyetheramine containing polyamide without excessive foaming in successive batches by providing a controlled heat input rate step for those batch runs that incorporate polyetheramine containing polyamide heel from previous runs.

Abstract: The disclosure relates to an improved method of producing MPMD based amorphous, semi-aromatic polyamides in order to improve their mechanical properties. It also relates to improved formulations of these polyamides which have further improved mechanical properties by the incorporation of greater amounts of isophthalic acid. The disclosure relates to an improved method of producing MPMD based amorphous, semi-aromatic polyamides in order to improve their mechanical properties. It also relates to improved formulations of these polyamides which have further improved mechanical properties by the incorporation of greater amounts of isophthalic acid.

Abstract: The disclosure relates to an improved method of producing MPMD based amorphous, semi-aromatic polyamides in order to improve their mechanical properties. It also relates to improved formulations of these polyamides which have further improved mechanical properties by the incorporation of greater amounts of isophthalic acid. The disclosure relates to an improved method of producing MPMD based amorphous, semi-aromatic polyamides in order to improve their mechanical properties. It also relates to improved formulations of these polyamides which have further improved mechanical properties by the incorporation of greater amounts of isophthalic acid.

Abstract: The present invention relates to flame-retardant polyamide compositions. In various aspects, the present invention provides a flame-retardant polyamide composition including a polyamide that is about 30 wt % to about 99 wt % of the composition. The polyamide has a relative viscosity (RV) of ?20 to ?33 as measured as an 8.4 wt % solution in 90% formic acid. The composition also includes one or more flame-retardant additives. Various aspects of the present invention provide compositions having enhanced flame-retardant properties as compared to corresponding compositions including the same or greater concentration of flame-retardant additive but using a polyamide that has an RV that is <20 or >33.

Abstract: Disclosed is a process for making a polyetheramine containing polyamide without excessive foaming in successive batches by providing a controlled heat input rate step for those batch runs that incorporate polyetheramine containing polyamide heel from previous runs.

Abstract: The present disclosure relates to a preparation of polymer with improved color and properties. More particularly, the disclosure relates to the preparation of polyamide by introducing a polyetheramine additive during the polymer extrusion step. The extruded polymer is superior in appearance and spinnable in subsequent processing into yarn.

Abstract: An apparel textile yarn includes a polyamide. The polyamide includes a nylon and a polyetheramine. The polyetheramine has a molecular weight of at least 1500 and an Amine Hydrogen Equivalent Weight (AHEW) of less than 10 percent higher than the idealized AHEW for the polyetheramine. The polyamide may have a moisture regain ranging from about 10% to about 30%.

Abstract: The present invention relates to a process for making a hydrophilic polyamide without excessive foaming by delaying the introduction of the hydrophilic monomer. The hydrophilic monomer may be added to the polymerization process after at least a portion of the water has been removed from the process.

Abstract: The disclosure relates to an improved method of producing MPMD based amorphous, semi-aromatic polyamides in order to improve their mechanical properties. It also relates to improved formulations of these polyamides which have further improved mechanical properties by the incorporation of greater amounts of isophthalic acid. The disclosure relates to an improved method of producing MPMD based amorphous, semi-aromatic polyamides in order to improve their mechanical properties. It also relates to improved formulations of these polyamides which have further improved mechanical properties by the incorporation of greater amounts of isophthalic acid.

Abstract: An apparel textile yarn comprising a polyamide, wherein the polyamide comprises a nylon and a polyetheramine, wherein the polyetheramine has a molecular weight of at least 1500, an Amine Hydrogen Equivalent Weight (AHEW) of less than 10 percent higher than the idealized AHEW for the polyetheramine, and wherein the polyamide may have a moisture regain ranging from about 10% to about 30%.

Abstract: A polyamide comprising a nylon and a polyetheramine. The polyetheramine can have a molecular weight of at least 1500 an Amine Hydrogen Equivalent Weight (AHEW) of less than 10 percent higher than the idealized AHEW for the polyetheramine. The polyamide may have a moisture regain ranging from about 10% to about 30%.

Abstract: A process for making a polyamide polymer, said process comprising heating, in one or more ionic liquid(s), one or more polyamide precursor(s) selected from: (i) one or more free dicarboxylic acid(s) or ester(s) thereof, with one or more diamine(s); or (ii) one or more salt(s) of a dicarboxylic acid with a diamine; or (iii) one or more lactam(s); or (iv) mixtures of any of the foregoing precursors (i) to (iii).

Abstract: The disclosures herein relate to a polymer such as nylon 66, having low yellowness and excellent whiteness retention for applications in melt extrusion and injection molding where an increase in molecular weight is not desirable. The polymer is prepared with a phosphorus compound content, e.g., a sodium hypophosphite (SHP) content, in an amount of 150 to 300 ppm by weight. The presence of an “end cap” additive such as one selected from acetic acid, propionic acid, benzoic acid, or succinic acid, added at the start of polymerization, effectively mitigates undesired molecular weight gain.

Abstract: A process for making a polyamide polymer, said process comprising heating, in one or more ionic liquid(s), one or more polyamide precursor(s) selected from: (i) one or more free dicarboxylic acid(s) or ester(s) thereof, with one or more diamine(s); or (ii) one or more salt(s) of a dicarboxylic acid with a diamine; or (iii) one or more lactam(s); or (iv) mixtures of any of the foregoing precursors (i) to (iii).

Abstract: A process for dyeing synthetic polyamide fibers, in particular in form of micro fibers, is described comprising the use of polyamide fibers having an amino end group content of at least 60 gram equivalents per 1000 kilograms of polyamide polymer and using a dye composition of water-soluble dyes containing at least one dye having 1 or 2 vinylsulfonyl groups and at least 1 dye having 1 or 2 groups of the general formula (A)--SO.sub.2 --CH.sub.2 --CH.sub.2 --N(R)--V--X (A)(in which R is hydrogen or alkyl of 1 to 4 carbon atoms which may be interrupted by 1 or 2 hetero groups and substituted by sulfo, carboxy, hydroxy, sulfato, phosphato and/or lower alkanoylamino, V is a covalent bond or alkylene of 2 to 4 carbon atoms or a group of the formula --CO--NH--CH.sub.2 --CH.sub.