Abstract: Disclosed are salt compositions of lysinol and dicarboxylic acids; and lysinol derived polymers including polyamide, polyimide, polyurea, cross-linked polyurea comprising urethane linkages, polyurea foams, cross-linked polyurea foams, and lysinol-epoxy thermoset.

Abstract: Disclosed are salt compositions of lysinol and dicarboxylic acids; and lysinol derived polymers including polyamide, polyimide, polyurea, cross-linked polyurea comprising urethane linkages, polyurea foams, cross-linked polyurea foams, and lysinol-epoxy thermoset.

Abstract: The invention is directed to a process for preparing polyamide polymers, particularly nylon 6, 6 and nylon 6, comprising fluoroether functionalized aromatic repeat units. In one embodiment, 1,6 diaminohexane, adipic acid, and fluoroether functionalized terephthallic or isophthallic acid or diester are reacted to form a polymer. The polymers so formed are useful for imparting soil resistance to polyamides, particularly in the form of films, molded parts, fibers, fabrics, and carpets.

Abstract: Disclosed is a polyamide resin blend including: a) 80 to 20 weight percent of a first homopolyamide; and b) 20 to 80 weight percent of a second homopolyamide that is different from said first homopolyamide; wherein the first and second homopolyamides are selected from the group consisting of poly(hexamethylene dodecanediamide) (PA 612), poly(hexamethylene tetradecanediamide) (PA614), poly(hexamethylene hexadecanediamide) (PA616) and poly(hexamethylene octadecanediamide) (PA618). Also disclosed are thermoplastic compositions including the resin blend, and optional components selected from the group: polymeric toughener, functional additive and reinforcing agent; and articles derived from the thermoplastic compositions.

Abstract: The invention is directed to a process for preparing polyamide polymers, particularly nylon 6, 6 and nylon 6, comprising fluoroether functionalized aromatic repeat units. In one embodiment, 1,6 diaminohexane, adipic acid, and fluoroether functionalized terephthallic or isophthallic acid or diester are reacted to form a polymer. The polymers so formed are useful for imparting soil resistance to polyamides, particularly in the form of films, molded parts, fibers, fabrics, and carpets.

Abstract: The invention is directed to shaped articles fabricated from polyamides comprising fluoroether functionalized aromatic moieties. Particular polyamides include nylon 6, 6 and nylon 6 copolyamides that comprise fluoroether functionalized aromatic amide repeat units. The shaped articles hereof are characterized by reduced surface tension and are useful for imparting soil resistant films, molded parts, fibers, fabrics, and carpets.

Abstract: In an improved polymer melt cutter a gas is added to the cooling liquid before the cooling liquid enters the cutting chamber, or is added directly through the cutting chamber wall. This forms a cooling liquid/gas mixture in the cutting chamber, which has the advantage of providing easier startups, lower operating costs, and other advantages. Processes associated with the improved polymer melt cutter are also disclosed.

Abstract: Aromatic polyesters are made in a continuous process in an extruder or extruder-like apparatus by reacting at elevated temperatures dicarboxylic acids, aliphatic esters of aromatic diols, and optionally aliphatic esters of aromatic hydroxyacids in an extruder while removing byproduct aliphatic carboxylic acid. The resulting aromatic polyesters, especially thermotropic liquid crystalline aromatic polyesters, are useful as molding resins for a variety of uses, for example electronic and electrical parts.

Abstract: A two-step process for the production of polyamides from .alpha.,.omega.-dinitriles and .alpha.,.omega.-diamines involving the catalytic hydrolysis of the .alpha.,.omega.-dinitrile by addition of water with simultaneous purging of the reactor (i.e., venting of ammonia and water vapor) in the first step followed by polymerization by addition of the .alpha.,.omega.-diamine to the hydrolysate in the second step. Such a process is particularly useful in the production of poly(hexamethylene adipamide), i.e., nylon 6,6, from adiponitrile and hexamethylene diamine using lower catalyst levels during hydrolysis and resulting in reduced levels of bis(hexamethylene)triamine, BHMT, in the polymer.

Abstract: A process for the hydrolysis of a dinitrile (e.g., adiponitrile) utilizing from 0.1 to 500 mmoles of catalyst (e.g., a mixture of phosphorous acid and calcium hypophosphite) per mole of the dinitrile and in the presence of from 0.01 to 0.5 moles of a dicarboxylic acid cocatalyst (e.g., adipic acid) followed by addition of a diamine (e.g., hexamethylenediamine) and heating to produce polymerization. Such a process is particularly useful in the production of nylon 6,6 having a low BHMT content and improved melt stability.

Abstract: A process for the hydrolysis of a dinitrile (e.g., adiponitrile) utilizing a dicarboxylic acid (e.g., adipic acid) as the sole catalyst followed by addition of a diamine (e.g., hexamethylenediamine) and heating to produce polymerization. Such a process is particularly usefull in the production of nylon 6,6 having a low BHMT content and improved melt stability.

Abstract: Disclosed is a process for the preparation of polyamide polymers via prepolymer formation in a reactor system comprising a reactor, flasher and separator, crystallization of the prepolymer under controlled temperature conditions and the subsequent conversion of these crystallized prepolymers to high molecular weight polymer.

Abstract: An improved method for manufacturing poly(hexamethylene adipamide), i.e. nylon 6,6, by reacting monomethyl adipate with hexamethylenediamine in an approximately equimolar ratio in the presence of water at a temperature of 100 to 165.degree. C. while simultaneous distilling off of a stoichiometric amount of methanol. The resulting aqueous intermediate product is then heated to 200 to 260.degree. C. while distilling off substantially all water at a pressure of 150 to 250 psig (1.03 .times.10.sup.6 to 1.72 .times.10.sup.6 Pa) followed by reducing the pressure to atmospheric pressure and increasing the temperature to 270 to 280.degree. C. to polycondense the distillate residue. Such a process is useful in producing high purity commercial grade poly(hexamethylene adipamide) that advantageously avoids problems caused by N-methylation of the polyamide.

Abstract: An improved method for increasing the relative viscosity and molecular weight of a polyamide polymer (such as nylon 6,6, nylon 6, and the like) while in the solid state involving the use of a phosphorus-containing catalyst (such as 2(2'-pyridyl) ethyl phosphonic acid or the like) in combination with an oxygen free gas characterized by a low dew point (typically below 30.degree. C. and preferably below -30.degree. C.). The combination of affording commercial operation at greater through put at lower temperature. Such a process is of particular value during the production of terpolyamide and multipolyamide polymer intended for use in colored nylon fiber manufacture.

Abstract: A mouldable reinforced polyamide composition comprising;(a) a polyamide consisting essentially of between about 0.5 and about 99.5 mol. % of aliphatic diamines having 4-12 carbon atoms and a complementary amount of 2-methyl-pentamethylene diamine copolymerized with aliphatic dicarboxylic acids having 6-12 carbon atoms; and(b) a filler in an amount of 0.5 to 200 parts by weight per 100 parts by weight of said polyamide. The polyamide has an RV greater than about 20. Related polyamides, especially in which the acid is 1,12-dodecanedioic acid, are also disclosed. The polyamides may be used in a wide variety of end-uses, including moulding, and exhibit excellent gloss compared with nylon 6,6.