Abstract: This invention relates to a process for the isolation of fatty acids and fatty acid esters from complex naturally occurring mixtures which contain sterols, triglycerides and phospholipids.

Abstract: This invention provides the composition, preparation, and end-use of waterborne crosslinking technology based compositions prepared from water-based latexes. The invention provides a water-based latex comprising dispersed, waterborne amino-functional polymer particles; dispersed, waterborne pendant-functional polymer particles; and water. The waterborne pendant-functional polymer comprises at least one pendant amine reactive functional moiety selected from the group consisting of carbonate, epoxide, isocyanate, isopropenyl, carboxylic acid, and allyl groups. In a preferred embodiment, a latex of the invention comprises dispersed, waterborne polymeric (polyamino)enamine (PPAE) particles; dispersed, waterborne pendant-functional polymer particles; and water. The PPAE is the reaction product of a surfactant-stabilized acetoacetoxy-functional polymer (SAAP) and a poly(alkylenimine).

Abstract: The present invention discloses a process comprising forming a preform with planar stretch ratios greater than about 14 from a polyester having a natural stretch ratio which is substantially matched to the preform planar stretch ratio at processing conditions; and stretch blow molding said preform to produce a container. Suitable natural stretch ratios include those greater than about 13 at 210.degree. F. The desired natural stretch ratios and desirable final container properties are achieved by balancing the appropriate I.V. and copolymer modification.

Abstract: A novel process for the production of degraded polyolefin is described. The process involves introducing polyolefin into one end of a vented multi-screw extruder, in the substantial absence of free radical initiator and oxidizing agent, and removing degraded polyolefin from the opposite end of the extruder.

Abstract: Disclosed is a process for upgrading paper-grade wood pulp to dissolving grade pulp which is suitable for use in the preparation of viscose rayon, cellulose ethers and cellulose esters such as cellulose acetate. The process utilizes a sequence of caustic extraction, xylanase treatment and caustic extraction to remove most of the xylan, which may be recovered for use in the production of xylose, xylitol, and furans.

Abstract: A polyester having increased UV absorption comprising (i) a residue of a dicarboxylic acid component comprising terephthalic and from about 1 to about 20 mole % of isophthalic acid, (ii) a residue of a glycol component comprising ethylene glycol, and (iii) from about 0.01 mole % to about 15 mole % of a residue of an aromatic diol derivative, wherein the aromatic diol derivative has a least two polyester reactive groups that are capable of participating in a polyester-forming reaction and the total mole % for components (i), (ii) and (iii) is 200 mole %.

Abstract: A process for lessening shear-induced reduction of fiber length in a melt processable, fiber reinforced polymer composition, and compositions useful in and obtained from such process, comprising the steps of: admixing a first polymer, the first polymer being a thermoplastic polymer, with a second polymer being TLCP, and a reinforcing fiber; and subjecting the composition to shear, wherein the first and second polymers have melt processing ranges that overlap over an overlapping melt processing range; and the second polymer is partly immiscible with or immiscible with the first polymer when mixed with the first polymer within the overlapping melt processing range.

Abstract: A process for preparing a high strength fiber reinforced polymer composite comprising:A) compounding a polymer with a fiber reinforcing agent thereby forming a compounded polymer composite;B) solid state polymerizing the compounded polymer composite to produce the high strength fiber reinforced polymer composite; andC) combining an additive into the high strength fiber reinforced polymer composite.

Abstract: The present invention relates to a process for producing polyesters displaying exceptionally low acetaldehyde concentrations and good clarity comprising the steps of:polycondensing in the melt phase, a polyester monomer/oligomer mixture under conditions sufficient to form a precursor having in intrinsic viscosity less than 75% of a possible maximum intrinsic viscosity; andsolid stating said precursor under conditions sufficient to increase said intrinsic viscosity at least about 0.05 dl/g.

Abstract: A novel, continuous process for the manufacture of novel higher molecular weight and higher acid numbered maleated polypropylenes with lower color at higher efficiencies involving specified ratios of polypropylene, maleic anhydride, and free radical initiator is described. The novel maleated polypropylenes have an acid number greater than 4.5, a yellowness index color of no greater than 76, and a number average molecular weight of at least 20,000. The process entails continuously forming an intimate mixture of molten polypropylene and molten maleic anhydride at one end of a reactor, continuously introducing a free radical initiator, and continuously removing high acid number high molecular weight maleated polypropylene of low color from the opposite end of the reactor.

Abstract: The present invention relates to a composite made by the process of melt mixing (a) a polymer having at least one isocyanate reactive group, wherein the polymer is from 30 to 90% by weight of the composite; (b) a thermoplastic polyurethane at from 0.1 to less than 10% by weight of the composite; and (c) a reinforcing fiber at from 9.9 to 60% by weight of the composite, wherein the sum of the weight percentages of components (a)-(c) is equal to 100%, wherein the polymer (a) is not a polyamide. The invention further relates to a composite prepared by the process of melt mixing (a) a polymer having at least one isocyanate reactive group, wherein the polymer is from 25 to 90% by weight of the composite; (b) a thermoplastic polyurethane at from 0.1 to 10% by weight of the composite; (c) a reinforcing fiber at from 9.8 to 60% by weight of the composite, and (d) an epoxy compound at from 0.1 to 5% by weight of the composite, wherein the sum of the weight percentages of components (a)-(d) is equal to 100%.

Abstract: A blend of polycarbonates of dihydroxydiphenyl cycloalkanes and optionally 4,4'-isopropylidenediphenol with polyesters from terephthalic acid, isophthalic acid, 1,4-cyclohexanedimethanol and 2,2,4,4-tetramethyl-1,3-cyclobutanediol, having the advantage of being colorless and providing an unexpected amount of impact strength, hardness and heat resistance. The polymer blends are especially suitable for the manufacture of clear molded articles, fibers, sheeting, and film.

Abstract: The present invention relates to a process for minimizing the formation of undesirable byproducts in ozonated liquids comprising the steps of:providing a container comprising a polyester comprising repeat units from a dicarboxylic acid component comprising at least about 85 mole percent terephthalic acid, 2,6-naphthalenedicarboxylic acid or a mixture thereof and at least about 85 mole percent ethylene glycol; and from about--to about--weight % of at least one polyamide which displays a melting point below that of said polyester, andfilling said container with an ozonated liquid.

Abstract: The invention relates to a method for preparing a polycarbonate, by mixing (i) 2,2,4,4-tetramethyl-1,3-cyclobutanediol, (ii) dimethyl carbonate, and (iii) a basic catalyst, and heating components (i)-(iii) to produce an intermediate, followed by heating the intermediate at a temperature of less than or equal to 300.degree. C. to produce the polycarbonate. The invention further relates to the polycarbonates produced by the methods of the present invention.

Abstract: The invention provides a process for the removal and recovery of zinc from an aqueous process stream. In particular, the process of the invention is useful in the removal and recovery of zinc compounds such as zinc chloride from an aqueous effluent stream produced in various manufacturing processes such as the manufacture of sorbic acid.

Abstract: A cellulosic ester has associated with the ester at least one near infrared fluorophore. A method for incorporating the near infred fluorophore into the cellulosic ester is also provided. In the method, the near infrared fluorophore is dissolved in a strong acid and precipitated to form an acid paste. The paste is then added to an activated cellulose, such as a hydrolyzed cellulose acetate, in the presence of at least one acid and acid anhydride. Advantageously, such marked cellulosic materials can be solvent spun into staple fibers which may be further utilized in known materials, webs and articles.

Abstract: A blend of polycarbonates of dihydroxydiphenyl cycloalkanes and optionally 4,4'-isopropylidenediphenol with polyesters from terephthalic acid, isophthalic acid, ethylene glycol and 2,2,4,4-tetramethyl-1,3-cyclobutanediol, having the advantage of being colorless and providing an unexpected amount of impact strength, hardness and heat resistence. The polymer blends are especially suitable for the manufacture of clear molded articles, fibers, sheeting, and film.

Abstract: Coal gasifiers using technology developed by Texaco Development Corporation, use coal slurry and oxygen as feed stocks. During start-ups, the raw gas produced in the gasifier must be flared until the downstream clean-up and recovery plants can be started. In order to reduce emissions through the flare during start-up, a technique was developed to start the gasifiers and downstream plants on a sulfur free, liquid, organic fuel. Once downstream plants are on-line, the fuel feed is switched to coal slurry on the same burner. The switch is accomplished while maintaining pressure and without interrupting to the fuel feed.

Abstract: Disclosed is an improved process for preparing 1-chloro-2,4-diaminobenzene by the selective hydrogenation of 1-chloro-2,4-dinitro-benzene wherein the hydrogenation is carried out in the presence of a modified Raney nickel catalyst containing about 70 to 95 weight percent nickel, about 4 to 10 weight percent aluminum, about 0.1 to 4 weight percent molybdenum, and from 0 to about 20 weight percent cobalt. The 1-chloro-2,4-diaminobenzene is useful as an intermediate for disperse dyes and for color photography.

Abstract: The present invention relates to a composition comprising a polymer having dispersed therein at least one layered clay material which has been cation exchanged with an organic cation salts represented by Formula I: ##STR1## wherein M represents either nitrogen or phosphorous; X.sup.- represents an anion selected from the group consisting of halogen, hydroxide, or acetate anions, preferably chloride and bromide; R.sub.1 is selected from the group consisting of straight and branched alkyl groups having at least 8 carbon atoms; R.sub.2, R.sub.3, and R.sub.4 are independently selected from straight or branched alkyl groups having 1 to four carbon atoms; and at least one expanding agent which is compatible with said polymer. Preferred polymers include polyesters. The compositions of the present invention show vastly improved platelet separation as evidenced by higher than previously reported basal spacing.