Abstract: The separation of polyunsaturated triglycerides from monounsaturated triglycerides is performed by an adsortive chromatographic process in liquid phase using hydrogen-, copper-, or potassium-exchanged omega zeollites or carbon as the adsorbent. A ketone, toluene or ketone/n-aliphatic hydrocarbon can be selected as the desorbent.

Abstract: The separation of diglycerides from triglycerides is performed by an adsorptive chromatographic process in liquid phase with Li-, K-, or hydrogen-exchanged omega zeolites or silica as the adsorbent. A ketone/n-aliphatic hydrocarbon mixture can be selected as the desorbent.

Abstract: This invention comprises a process for separating 2,4-toluene diisocyanate from a feed mixture with 2,6-toluene diisocyanate. The process comprises contacting the mixture at adsorption conditions with an adsorbent comprising a Y-type zeolite cation exchanged with a cation in the group Na, Ca, Li or Mg, thereby selectively adsorbing the 2,4-toluene diisocyanate. The remainder of the feed mixture is removed from the adsorbent and the adsorbed toluene diisocyanate isomer is recovered by desorption at desorption conditions with a desorbent material comprising toluene.

Abstract: This invention comprises a process for separating 2,6-toluene diisocyanate from a feed mixture with 2,4-toluene diisocyanate. The process comprises contacting the mixture at adsorption conditions with an adsorbent comprising a Y-type zeolite cation exchanged with a potassium cation, thereby selectively adsorbing the 2,6-toluene diisocyanate. The remainder of the feed mixture is removed from the adsorbent and the adsorbed toluene diisocyanate 2,6-isomer is recovered by desorption at desorption conditions with a desorbent material comprising toluene.

Abstract: Citric acid is separated from a fermentation broth by using an adsorbent comprising a neutral, noniogenic, macroreticular, water-insoluble, crosslinked styrene-poly(vinyl)benzene and a desorbent comprising water and, optionally, acetone with the water. The pH of the feed is adjusted and maintained below the first ionization constant (pKa.sub.1) of citric acid to maintain selectivity.

Abstract: A method for removing impurities from caprolactam is disclosed. The method comprises the sequential steps of treating the impure caprolactam with phosphorus pentoxide so that the impurities react therewith to form high boiling species and then distilling the so treated impure lactam to recover substantially pure caprolactam as overhead, with the impurities remaining as bottoms.

Abstract: This invention comprises a process for separating the minor dinitrotoluene isomers, 2,3-dinitrotoluene and 3,4-dinitrotoluene from a feed mixture comprising 2,4- and 2,6-dinitrotoluene, and the minor isomers, which process comprises contacting the mixtures at adsorption conditions with an adsorbent comprising a Y type, or dealuminated Y type, zeolite, cation exchanged with Na, Ca or H, thereby selectively adsorbing the 2,3- and 3,4- isomers or 2,4- and 2-6 isomers, respectively. The remainder of the feed mixture is removed from the adsorbent and the minor isomers are recovered by desorption at desorption conditions with a desorbent material comprising an alcohol, ketone or an ester.

Abstract: A process for separating ortho- or meta-nitrobenzaldehyde from a feed mixture comprising ortho-nitrobenzaldehyde or metal-nitrobenzaldehyde and at least one other isomer from which the ortho- or metal-isomer is to be separated. The feed mixture is contacted at adsorption conditions with meta-selective adsorbent comprising a type X zeolite having sodium or lithium cations at exchangeable cationic sites or with an ortho-selective adsorbent comprising a type Y zeolite having alkali metal or alkaline earth metal cations at exchangeable cationic sites or a phosphate-substituted crystalline, aluminum silicate zeolite. Preferred desorbents are lower alkyl acetates and formates, acetonitrile and benzaldehyde.

Abstract: Maltose is separated from mixtures with glucose, DP3 and DP4+ polysaccharides by adsorption on low aluminum Y-type zeolites, i.e., having up to about 15 atoms of aluminum per unit cell and desorbing the adsorbate with water.

Abstract: A process for the liquid phase adsorptive separation of psicose from an aqueous feed mixture of monosaccharides containing psicose along with other aldoses and ketoses. The feed is contacted with a calcium-Y type zeolite in two stages. In the first, psicose and fructose are selectively adsorbed to the substantial exclusion of other aldoses and ketoses. In the second, psicose is adsorbed to the substantial exclusion of fructose, which is recovered in high purity in the raffinate. The process can be carried out on a commercial scale by means of a simulated moving bed flow scheme.

Abstract: A process for the liquid phase adsorptive separation of arabinose from an aqueous feed mixture of monosaccharides containing arabinose along with other aldopentoses and aldohexoses. The feed is contacted with a calcium-Y or clacium-X type zeolite. Arabinose is selectively adsorbed to the substantial exclusion of other aldoses and thereafter is recovered in high purity by desorption with water or ethanol. The process can be carried out on a commercial scale by means of a simulated moving bed flow scheme.

Abstract: This invention relates to a molecular sieve comprising silicalite in a phosphorus modified alumina matrix, the precursor of the molecular sieve comprising silicalite powder dispersed in an alumina hydrosol commingled with a phosphorus containing compound, the phosphorus to aluminum molar ratio in the molecular sieve being from 1:1 to 1:100.

Abstract: This invention comprises a process for separating 2,4-dinitrotoluene from a feed mixture comprising 2,4-dinitrotoluene and at least one isomer thereof, which process comprises contacting the mixture at adsorption conditions with an adsorbent comprising an X or Y type zeolite cation exchanged with a cation in the group K, Na, Ca, Ba, Li or Mg, thereby selectively adsorbing the 2,4-dinitrotoluene. The remainder of the feed mixture is removed from the adsorbent and the 2,4-dinitrotoluene is recovered by desorption at desorption conditions with a desorbent material comprising a C.sub.3 to C.sub.5 alcohol, a ketone, toluene, an ester or a nitrocompound.

Abstract: This invention comprises a process for separating 2,4-toluenediamine from a feed mixture comprising 2,4-toluenediamine and at least one isomer thereof, which process comprises contacting the mixture at adsorption conditions with an adsorbent comprising a Y type zeolite cation-exchanged with a Ni or Ca cation or an X type zeolite cation-exchanged with a cation from the group Na, Ni and K, thereby selectively adsorbing the 2,4-toluenediamine or an L type zeolite cation-exchanged with a K cation, or an X type zeolite cation exchanged with a Ba cation, thereby selectively adsorbing the 2,6-toluenediamine. The remainder of the feed mixture is removed from the adsorbent and the adsorbed toluenediamine isomer is recovered by desorption at desorption conditions with a desorbent material comprising a lower alcohol or an amine.

Abstract: Staple fibers made from crimped, in particular compression crimped, multicomponent filaments of the matrix/segment type, the cross section of which shows, in addition to the matrix, at least 6 peripheral wedge-shaped or lenticular segments, not completely covered by the matrix, are processed into a web, which is then mechanically bonded, preferably by needling. Subsequently, the fabric is subjected to a shrinkage process, by which its density is increased by more than 30%, themulticomponent fibers being completely or partly split up into their components. The difference in shrinkage between the components should be at least 10%. The liquids used for the shrinkage treatment are in particular organic liquids, such as methylene chloride, as well as other liquids producing a difference in shrinkage of at least 20%.

Abstract: A process for converting the naphtha fractions distilled from crude oil into greater volumes than heretofore of a gasoline product having higher octane number and a distillate stream of improved cetane number and smoke point by sending the lower boiling naphtha fraction directly to the gasoline pool and subjecting the higher boiling naphtha fraction to a mild reforming treatment, extracting the reformate to separate two streams, aromatics which are directed to the pool and paraffins which are sent to a splitter to separate the paraffin stream into fractions greater than C.sub.8 and a C.sub.8 or less fraction. The C.sub.8 or less fraction is cracked, thermally or catalytically and alkylated and/or polymerized before being directed to the gasoline pool. The fraction from the splitter containing hydrocarbons greater than C.sub.8 can be used in the distillate pool.

Abstract: A process for the preparation of a slow-release fertilizer comprising the steps of:(a) grinding a first volume of peanut hulls to a particle size of 1/32 to 1/4 inch and a second volume to 1/8 to 1/2 inch,(b) treating said first a volume of hulls with an equal volume of 2N (normal) nitric acid for 30 minutes at 121 degrees C. and 15 p.s.i. pressure to extract and solubilize the liqueous material from the hulls,(c) adding 1 volume of 1 normal solubilized sodium hydroxide to 2 volumes of said second volume of peanut hulls and heating and stirring said mixture until said nutrients are solubilized,(d) heating said second volume of peanut hulls and sodium hydroxide with steam and at a temperature of 121 degrees C. and pressure of 15 p.s.i.

Abstract: This invention relates to a process for forming composite yarns comprising an elastic filament and at least one relatively inelastic filament, which process comprises entangling a latent-contractable elastomer producing polymer filament with a relatively inelastic filament while the latent-contractable filament is relatively unelongated (less than tension maintained 100% elongation) or preferably substantially unelongated (merely taut) to produce a composite yarn which can be formed into a yarn package with minimum stored energy compared to conventional elastomeric yarn packages and which yarn can be processed (e.g., knitted or woven) into goods on equipment normally employed for non-elastic fiber processing; and yet which composite yarn upon actuation of the latent contraction within the polymeric filament provides a composite yarn which is elastic.

Abstract: Novel heat bondable bicomponent fibers useful in the production of nonwoven fabrics, as well as methods for the production of such fibers, are disclosed. The fibers comprise a latently adhesive component for forming interfilamentary bonds upon the application of heat and subsequent cooling, and another component, and are characterized by the fact that upon the application of heat sufficient to melt the latently adhesive component and subsequent cooling, a substantial shrinkage force appears in said other component only after resolidification of said latently adhesive component.

Abstract: A method for the manufacture of urethane-modified polyisocyanurate foams in which an isocyanate is blended with a "B" side comprising a polyol blend, a surfactant, a blowing agent, and a catalyst. The polyol blend comprises at least 5% (wt.) of a mixture of a polyalkoxylated amine and a polyalkoxylated quaternary ammonium borate ester, at least 40% (wt.) of a resin polyol, with any remainder being a polyether or polyester polyol. All components of the "B" side will remain a homogeneous liquid without phase separation and without the need for agitation for at least 3 days after blending. The resin polyols are preferably moderate viscosity, aromatic polyester polyols derived from polycarbomethoxyl-substituted diphenyls, polyphenyls, and benzyl esters of the toluate family.