Abstract: The reaction of diner acids, C10-C20 dicarboxylic acids, and alkylene diamines having from 2 to 8 carbon atoms provides polyamides having good oil and solvent resistance, high heat resistance, flexibility, and relatively low melt viscosities.

Abstract: Solvent-resistant polyamides having an exceptionally desirable combination of properties, including good cold flexibility, excellent impact resistance and high heat resistance are obtained by reacting a) an acid component comprising at least one C6 to C22 aliphatic dicarboxylic acid and b) an amine component comprising at least one alkylene diamine having from 2 to 14 carbon atoms, at least one polyoxyalkylene diamine containing at least one polyoxytetramethylene block, and at least one polyoxyalkylene diamine that does not contain a polyoxytetramethylene block. Such polyamides are particularly useful for molding and bonding applications, such as, for example, in the filter industry, especially articles that are to be used in applications involving organic solvents, fuels or oils.

Abstract: The reaction of diner acids, C10-C20 dicarboxylic acids, and alkylene diamines having from 2 to 8 carbon atoms provides polyamides having good oil and solvent resistance, high heat resistance, flexibility, and relatively low melt viscosities.

Abstract: A polyamide resin comprising the reaction product obtained by the reaction of an acid component comprised of a major concentration of a dimer acid and minor concentration of a monobasic acid and an amine component comprised of a major concentration of a short-chain alkylenediamine, a first minor concentration of a medium-chain alkylenediamine and second minor concentration of a polyoxyalkylene diamine having a molecular weight greater than about 500 is provided. The polyamide resin is used to form a blend of containing the polyamide in a major amount by weight and a first minor amount by weight of a polar wax and a second minor amount by weight of a polyolefin elastomer. The composition is used to reinforce a footwear upper, e.g. as a print on box toe material.

Abstract: A polyamide resin comprising the reaction product obtained by the reaction of an acid component comprised of a major concentration of a dimer acid and minor concentration of a monobasic acid and an amine component comprised of a major concentration of a short-chain alkylenediamine, a first minor concentration of a medium-chain alkylenediamine and second minor concentration of a polyoxyalkylene diamine having a molecular weight greater than about 500 is provided. The polyamide resin is used to form a blend of containing the polyamide in a major amount by weight and a first minor amount by weight of a polar wax and a second minor amount by weight of a polyolefin elastomer. The composition is used to reinforce a footwear upper, e.g. as a print on box toe material.

Abstract: A process is provided for preparing a dispersion of a polyamide in water, said process comprising:forming a solution of a polyamide having an acid value of greater than about 2 in an organic solvent to form a solution of said polyamide in said solvent, said polyamide and said solvent being at a temperature below the softening point of said polyamide during said dissolving, said solution further comprising a surfactant, wherein at least a portion of the acid value of said polyamide is neutralized,adding sufficient water to said solution with mixing to form an oil-in-water dispersion, the temperature of said solution and said water being below the softening point of said polyamide during said adding, andremoving at least a major amount of said organic solvent from said oil-in-water dispersion. The resulting dispersion is useful in preparing a coating of the polyamide, which coating is useful as an adhesive.