Patents Assigned to Akzona Incorporated
  • Patent number: 4950422
    Abstract: This disclosure relates to aqueous peroxide emulsions and the use thereof in suspension (co)polymerization reactions. In particular, the aqueous peroxide emulsions comprise: (a) 20-60% by weight of an organic peroxide which is liquid at C.; (b) 2-20% by weight of an aliphatic monohydric alcohol having 1-14 carbon atoms and/or aliphatic glycol having 2-4 carbon atoms; (c) a surfactant and/or a protective colloid; and (d) water. The emulsions of the present disclosure may be transported while in a liquid state at a temperature of C. to C. with minimal decrease in active oxygen content.
    Type: Grant
    Filed: February 10, 1984
    Date of Patent: August 21, 1990
    Assignee: Akzona Incorporated
    Inventors: Reinder Torenbeek, Willem F. Verhelst
  • Patent number: 4855346
    Abstract: There are disclosed novel compounds of the formula: ##STR1## wherein n=0 or 1, R.sub.1 is selected from the group consisting of a hydrogen atom, straight chain and branched chain alkyl groups and alkoxy groups, and cycloalkyl groups and cycloalkoxy groups having 5 to 8 carbon atoms, R.sub.2 is selected from the group consisting of lower alkyl groups having 1 to 5 carbon atoms, X is an oxygen atom if n=0 or a nitrogen atom if n=1, Y is selected from the group consisting of a hydrogen atom, straight chain and branched chain alkyl groups having 1 to 18 carbon atoms, cycloalkyl groups having 5 to 8 carbon atoms, alkenyl groups having 3 to 18 carbon atoms, phenyl groups, alkylphenyl groups having 7 to 14 carbon atoms and aralkyl groups having 7 to 15 carbon atoms, and R.sub.3 is selected from the same group as Y, or together with X and Y forms part of a heterocyclic ring composed of 5 or 6 atoms in which X is the hetero-nitrogen atom.
    Type: Grant
    Filed: September 4, 1984
    Date of Patent: August 8, 1989
    Assignee: Akzona Incorporated
    Inventors: Paul K. Battey, Peter Hope, Ashutosh H. Sharma
  • Patent number: 4801753
    Abstract: The present invention relates to novel biologically active tricyclic compounds, of the general formula I: ##STR1## and salts thereof, in which R.sub.1 represents hydrogen, alkyl of 1-6 carbon atoms, an optionally substituted aralkyl group or an acyl group,R.sub.2 represents hydrogen, alkyl (1-6 C), or an optionally substituted aralkyl group, orR.sub.1 +R.sub.2 together with the nitrogen atom represent a heterocyclic 5- or 6-membered ring, p1 X and Y each represent hydrogen, hydroxy, halogen, alkyl or alkoxy of 1-6 carbon atoms, nitro, CF.sub.3 or an acyloxy group, andthe dotted line signifies an optional extra bond.The compounds of the general formula I have valuable anti-depressant activity without a sustained influence on appetite.
    Type: Grant
    Filed: September 17, 1987
    Date of Patent: January 31, 1989
    Assignee: Akzona Incorporated
    Inventors: David S. Savage, Thomas Sleigh, John K. Clark
  • Patent number: 4774017
    Abstract: A thickening agent comprising polyether derivatives of the general formula: ##STR1## wherein R.sub.1 is a substituted or unsubstituted hydrocarbon radical or an alkylphenol radical having 10 or more carbon atoms, n is 10 to 100, m is 0 to 25, and p is 1 to 3, and wherein R.sub.2 is an alkyl radical having 8 to 30 carbon atoms. These polyether derivatives are prepared by the gradual addition of a long-chain 1,2-epoxy having a chain length of 10 to 32 carbon atoms at temperatures from to C.
    Type: Grant
    Filed: April 17, 1986
    Date of Patent: September 27, 1988
    Assignee: Akzona Incorporated
    Inventors: Karl Seibert, Klaus Neumann, Ernst Spiess, Hendrick G. Bruil
  • Patent number: 4720328
    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.
    Type: Grant
    Filed: September 2, 1983
    Date of Patent: January 19, 1988
    Assignee: Akzona Incorporated
    Inventors: Tom F. Corbin, Jack A. Dellinger, Kenneth B. Wagener
  • Patent number: 4708985
    Abstract: The invention relates to a hydrophilic moulding compound of homopolyester and/or copolyester which contains 1 to 20 percent by weight of an alkaline and/or alkaline-earth salt of salt-forming polymer and/or copolymers from ethylenic unsaturated monomers as finely dispersed filling material, having in particualr a maximum particle size of 1 um, the salt-forming polymers being composed in particular of the following single monomers or mixtures thereof: vinyl-sulfonic acid, acrylamidoalkylene-sulfonic acid, sulfonated styrene, acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, crotonic acid, vinyl-phosphonic acid, monoalkyl ester of maleic acid, monoalkyl ester of fumaric acid.The invention also relates to a process according to which the salts are preferably added to the polycondensation mixture of the polyester starting materials before and/or during poly-condensation as a suspension in polyhydric alcohol.
    Type: Grant
    Filed: March 22, 1982
    Date of Patent: November 24, 1987
    Assignee: Akzona Incorporated
    Inventors: Michael Diamantoglou, Helmut Magerlein, Walter Brodowski, Wolfgang Grimm, Gerhard Meyer
  • Patent number: 4699627
    Abstract: A new and useful indigo-dyeable polyester is disclosed, and process for making same, for which a suitable polyester has had applied to its surface an amount of a suitable indigo dye retaining compound effective to provide said polyester with indigo fastness properties similar to cotton. The new indigo dyeable polyester may be employed in the manufacture of a staple material blended with cotton in predetermined amounts depending on the end use desired, e.g., 50:50 by weight for cotton denims (e.g., jeans). Preferable indigo dye retaining compounds comprise monomers dioleylamine and dicocoamine. Other suitable indigo dye retaining monomers are disclosed, inter alia, having the formula: ##STR1## wherein R.sub.1 is alkyl or alkenyl of about 10-18 carbons; R.sub.2 is alkyl, alkylaryl, or alkenyl of about 8-18 carbons, R--CH.sub.2 --NO.sub.2, R--CH.dbd.NH, where R is alkyl or alkenyl from one to eighteen carbons; and R.sub.3 is hydrogen or alkyl from one to about twelve carbons.
    Type: Grant
    Filed: March 9, 1983
    Date of Patent: October 13, 1987
    Assignee: Akzona Incorporated
    Inventor: Bobby J. Bailey
  • Patent number: 4692365
    Abstract: Use of a textured polyester filament yarn in a substrate for the manufacture of abrasives is disclosed. The substrate permits the manufacture of abrasives having a uniform and clean surface and a long running time. Coated abrasives incorporating the invention will not rapidly lose their binding agent grain layer during grinding and possess a high level of adhesion between substrate and adhesive. The particular yarn disclosed exhibits good absorbency for a binding agent for all, including fine, grains of abrasives.
    Type: Grant
    Filed: October 30, 1984
    Date of Patent: September 8, 1987
    Assignee: Akzona Incorporated
    Inventors: Eberhard Kratzsch, Wolfgang Cygan, Nandor Kiss
  • Patent number: 4677208
    Abstract: N-substituted mono or bis-oxazolidines may be manufactured by reacting an alkylene oxide at alkoxylating conditions with a mono-imine of the general formula: ##STR1## or a bis-imine of the general formula: ##STR2## wherein R is a linear or branched alkyl, aryl, aralkyl, alkylenyl or aryllenyl group having 1-22 carbon atoms, and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be the same or different, and are selected from the group including H--, methyl, ethyl, isobutyl, isoamyl, or phenyl. The oxazolidine may thereafter be cleaved with water, preferably slightly acidified, to produce the monoethoxylated amine.
    Type: Grant
    Filed: August 12, 1985
    Date of Patent: June 30, 1987
    Assignee: Akzona Incorporated
    Inventors: Dieter Frank, Hee Cho
  • Patent number: 4675118
    Abstract: A novel compound comprising a quaternary ammonium salt having the formula: ##STR1## wherein R- is an aliphatic hydrocarbon radical having a carbon chain length of from about 6 to about 18, and X.sup..crclbar. is Cl.sup..crclbar., I.sup..crclbar., Br.sup..crclbar., or OSO.sub.3 CH.sub.3.sup..crclbar.. The compound is soluble in water and/or isopropyl alcohol to form a true solution, which is clear and colorless at F. and which has particular utility as a fabric softening composition. The compound remains as a solution in water even at composition/water weight ratios of 75:25.
    Type: Grant
    Filed: January 6, 1987
    Date of Patent: June 23, 1987
    Assignee: Akzona Incorporated
    Inventors: Keith D. Stanley, Kenneth B. White
  • Patent number: 4666763
    Abstract: There is provided a fiber batt made from a plurality of entangled synthetic fibers arranged in a random fashion, forming a nonwoven structure. Each fiber contains a plurality of substantially spherically shaped void spaces. The batts may be made by an extrusion/blowing technique. It has been found that the batts are particularly useful as thermal insulators, as oil and water separators, and in controlled release applications.
    Type: Grant
    Filed: December 7, 1984
    Date of Patent: May 19, 1987
    Assignee: Akzona Incorporated
    Inventors: Charles L. King, Nicholas J. Mussro, Jr., Dennis W. Roberts
  • Patent number: 4652396
    Abstract: There is disclosed a method for increasing the electrical conductivity of a porous synthetic polymeric material. The method comprises depositing an effective amount of a polyacetylene polymerization catalyst throughout the porous structure, subsequently exposing said material to acetylene under polymerization conditions, for a time sufficient to form polyacetylene within the porous structure, and finally doping the resultant product with a conductivity modifying amount of either an electron donor dopant or an electron acceptor dopant.There is also disclosed an improved electrodialysis process wherein an electrolyte solution is placed between opposite faces of two membranes, the first membrane being an anion exchange membrane and the second membrane being a cation exchange membrane, while being subjected to a primary electric field causing the cations in the electrolyte to pass through the cation exchange membrane and the anions to pass through the anion exchange membrane.
    Type: Grant
    Filed: May 6, 1983
    Date of Patent: March 24, 1987
    Assignee: Akzona Incorporated
    Inventor: Kenneth B. Wagener
  • Patent number: 4650587
    Abstract: A new and useful particulate magnesium phosphate product (MGP) and method of use therefor are disclosed for removing ammonia from aqueous solutions, e.g., recirculating dialysate solutions and intragastrointestinal fluids as may result from the hydrolysis of urea. This particulate magnesium phosphate product (MGP) acts as a remarkably effective scavenger wherein under equilibrium conditions only about six (6) grams of the novel product are required to bind the ammonia (more exactly, ammonium ions) liberated from one (1) gram of the urea, a result far superior to traditional zirconium phosphate (ZP) prior art materials which under ideal conditions require about 17-20 grams of ZP per gram of urea. The novel particulate magnesium phosphate product can be exploited in one embodiment as a replacement for the older ZP materials used to remove ammonia produced by enzymatic hydrolysis of urea in recirculating dialysis systems utilizing disposable cartridges.
    Type: Grant
    Filed: September 9, 1982
    Date of Patent: March 17, 1987
    Assignee: Akzona Incorporated
    Inventors: Robert B. Polak, Craig R. Hof
  • Patent number: 4612688
    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%.
    Type: Grant
    Filed: March 21, 1985
    Date of Patent: September 23, 1986
    Assignee: Akzona Incorporated
    Inventors: Klaus Gerlach, Nikolaus Mathes, Hans-Jurgen Pitowski, Friedbert Wechs
  • Patent number: 4612147
    Abstract: Polyester fibers containing one or more oxalate complexes of the general formulaMe.sub.n [Z(C.sub.2 O.sub.4).sub.m ]are drawn and subjected to a hydrosetting process at temperatures of to C. in the presence of liquid water, the water containing one or more of the following surfactants: salts of partial esters of phosphoric aid, sulfosuccinic aid esters, phosphonic acid esters as well as ethoxylated silicon compounds, ethoxylated fatty alcohols, polyglycol esters of fatty acids as well as various imidazole salts of partially or completely hydrogenated imidazoles. In this way the hydrosetting process is accelerated and a more stable pore structure is obtained. Water absorption and retention are also increased.
    Type: Grant
    Filed: February 14, 1984
    Date of Patent: September 16, 1986
    Assignee: Akzona Incorporated
    Inventors: Herbert Haubold, Bernhard Burg
  • Patent number: 4603885
    Abstract: A pipe and sleeve telescoped joint with the pipe and sleeve in sealing engagement and keys embedded in both pipe and sleeve at their interface. The size and number of the keys are calculated from the size and strength of the pipe. The sleeve is sized and its strength selected from the strength of the pipe, and the sleeve ends are shaped to hold the joint circular when it is made. The apparatus includes means for holding the midportion of the sleeve circular when creating the joint, and for cooperating with the sleeve ends to keep them circular. The sealing engagement is created by firing a propellant into a substantially incompressible medium, like water, held by the apparatus in a cavity about the sleeve, and a piston separates the explosive propellant from the pressure medium.
    Type: Grant
    Filed: August 1, 1984
    Date of Patent: August 5, 1986
    Assignee: Akzona Incorporated
    Inventor: Lee A. Archer
  • Patent number: 4601937
    Abstract: A method of temporarily densifying a bulky non-woven matting or fabric for handling and storage is disclosed, wherein the non-woven is heated, preferably to a temperature above C. but below the softening temperature while in a compacted state, then immediately cooled in the compacted state. Means for reducing stiffness of the compacted matting are also disclosed.
    Type: Grant
    Filed: October 17, 1983
    Date of Patent: July 22, 1986
    Assignee: Akzona Incorporated
    Inventor: Eberhard Latussek
  • Patent number: 4586523
    Abstract: There is disclosed a process for cleaning the interior wall of a metal vessel or pipe comprising flooding or turbulently impacting the interior wall of said vessel or pipe with a strongly alkaline or strongly acidic cleaning fluid, simultaneously measuring the conductivity of the cleaning fluid between two electrodes located in the interior of said vessel or pipe and terminating said flooding or impacting when the measured conductivity has been substantially restored to the level measurable with clean electrodes. There is also disclosed an apparatus for performing the process.
    Type: Grant
    Filed: February 1, 1985
    Date of Patent: May 6, 1986
    Assignee: Akzona Incorporated
    Inventor: Rudolf Juenger
  • Patent number: RE32503
    Abstract: A finely divided silicic acid simultaneously suitable as a filtering auxiliary and as a beer stabilizing agent in the filtration of beer. The acid is particulate, and the particles are of an essentially spherical or spheroidal shape with SiO.sub.2 content of at least 95% and an Na.sub.2 O content of less than 0.25%.
    Type: Grant
    Filed: November 8, 1984
    Date of Patent: September 15, 1987
    Assignee: Akzona Incorporated
    Inventor: Gerhard Steenken
  • Patent number: RE32696
    Abstract: The present invention relates.Iadd., inter alia, improvements in the sandwich technique for the determination of a component of an antigen-antibody reaction in a liquid sample to be tested, utilizing as reagents (a) one component of said reaction bound to the surface of a water-insoluble, water-insuspensible, solid carrier, and (b) a component having the same immunological properties covalently linked to an enzyme. .Iadd.If and only if the component of the reagent that is water-insoluble and water-insuspensible has the same immunochemical properties as the component to be determined, is a predetermined amount of a binding partner for said first reagent (e.g., the reagent that is water-insoluble and water-insuspensible) added to the liquid sample. .Iaddend.The liquid sample is contacted and incubated with the reagent(s) to form a reaction mixture, the enzyme activity of either the liquid or solid phase of which is a measure of the presence and quantity of the component to be determined.
    Type: Grant
    Filed: December 22, 1978
    Date of Patent: June 14, 1988
    Assignee: Akzona Incorporated
    Inventors: Antonius H. W. M. Schuurs, Bauke K. Van Weemen, Gerrit Wolters