Patents by Inventor Hermann A. Zinnen
Hermann A. Zinnen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 4827077Abstract: The chromatographic adsorption separation of indene from petrochemical or synthetic feed mixtures with an Na- or K-exchanged X- or Y-zeolite and toluene, benzene, fluorobenzene or other halogen- or alkyl-substituted monocyclic aromatic desorbents. Selectivity of the separation is dependent on water content, from 1-8% (wt.), of the adsorbent.Type: GrantFiled: February 22, 1988Date of Patent: May 2, 1989Assignee: UOP Inc.Inventor: Hermann A. Zinnen
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Patent number: 4810266Abstract: Acid gases such as carbon dioxide are removed from air or other gases using a unique carbon-based material. The material is a carbon molecular sieve prepared from oxygen-free precursors carbonized in the absence of oxygen. The pores of the material are then enlarged as by high temperature steaming. Alcohol amines are then used to impart an amine functionality to the materials. A gas to be treated is contacted with this material at room temperature and atmospheric pressure, with the adsorbed gas being released by heating to a moderate temperature.Type: GrantFiled: February 25, 1988Date of Patent: March 7, 1989Assignee: Allied-Signal Inc.Inventors: Hermann A. Zinnen, Anil R. Oroskar, Chin-Hsiung Chang
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Patent number: 4797233Abstract: The separation of monoglycerides from diglycerides and triglycerides is performed by an adsorptive chromatographic process in liquid phase using sodium, magnesium, lithium or potassium-exchanged X zeolites or potassium or sodium-exchanged Y zeolite, or potassium-exchanged L zeolite as the adsorbent. A ketone or ketone/n-aliphatic hydrocarbon can be selected as the desorbent.Type: GrantFiled: August 20, 1986Date of Patent: January 10, 1989Assignee: UOP Inc.Inventor: Hermann A. Zinnen
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Patent number: 4794202Abstract: A process for separating the para and ortho isomers of a halogen substituted toluene from a feed mixture of the same. Separation of the isomers is effected by selective adsorption and desorption and is susceptible to various flow schemes for performing continuous adsorptive separations. The process uses an X type zeolite adsorbent having calcium, barium, potassium, or combinations thereof as cations and a mixed desorbent containing chlorobenzene and/or bromobenzene and alicyclic hydrocarbons.Type: GrantFiled: April 15, 1985Date of Patent: December 27, 1988Assignee: UOP Inc.Inventors: Hermann A. Zinnen, Thad S. Franczyk
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Patent number: 4784807Abstract: 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.Type: GrantFiled: July 6, 1987Date of Patent: November 15, 1988Assignee: UOP Inc.Inventor: Hermann A. Zinnen
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Patent number: 4770819Abstract: 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.Type: GrantFiled: July 6, 1987Date of Patent: September 13, 1988Assignee: UOP Inc.Inventor: Hermann A. Zinnen
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Patent number: 4721806Abstract: 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.Type: GrantFiled: May 8, 1987Date of Patent: January 26, 1988Assignee: UOP Inc.Inventor: Hermann A. Zinnen
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Patent number: 4721807Abstract: 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.Type: GrantFiled: May 8, 1987Date of Patent: January 26, 1988Assignee: UOP Inc.Inventor: Hermann A. Zinnen
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Patent number: 4717778Abstract: 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.Type: GrantFiled: October 1, 1985Date of Patent: January 5, 1988Assignee: UOP Inc.Inventors: Hermann A. Zinnen, Thad S. Franczyk
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Patent number: 4714783Abstract: 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.Type: GrantFiled: May 12, 1986Date of Patent: December 22, 1987Assignee: UOP Inc.Inventors: Hermann A. Zinnen, Thad S. Franczyk
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Patent number: 4642397Abstract: 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.Type: GrantFiled: October 1, 1985Date of Patent: February 10, 1987Assignee: UOP Inc.Inventors: Hermann A. Zinnen, Thad S. Franczyk
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Patent number: 4633018Abstract: 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.Type: GrantFiled: December 20, 1985Date of Patent: December 30, 1986Assignee: UOP Inc.Inventor: Hermann A. Zinnen
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Patent number: 4620047Abstract: An adsorptive separation process for separating ortho-nitrotoluene from a feed mixture comprising the ortho-isomer and at least one other isomer of nitrotoluene. The process comprises contacting the feed mixture with an adsorbent comprising a type X zeolite, containing at the exchangeable cationic sites cations of metals from Group IA or IIA of the Periodic Table of Elements, selectively adsorbing substantially all of the ortho-nitrotoluene to the substantial exclusion of the remaining isomers, removing the non-adsorbed portion of the feed mixture from contact with the adsorbent, and thereafter recovering high-purity ortho-isomer by desorption with nitrobenzene.Type: GrantFiled: October 18, 1984Date of Patent: October 28, 1986Assignee: UOP Inc.Inventor: Hermann A. Zinnen
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Patent number: 4605783Abstract: An adsorptive method of separating alcohols and aldehydes or ketones and alcohols of monoterpenes is disclosed. The method uses an X-type zeolite containing sodium and potassium cations to selectively adsorb the alcohols thereby allowing recovery of an aldehyde or ketone raffinate stream and, after desorption, an alcohol extract stream. The method is suitable for feed mixtures containing individual or multiple monoterpenoid components.Type: GrantFiled: March 21, 1985Date of Patent: August 12, 1986Assignee: UOP Inc.Inventor: Hermann A. Zinnen
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Patent number: 4594423Abstract: A process for separating alpha or gamma-picoline from a feed mixture comprising alpha-picoline or gamma-picoline and at least one other picoline isomer from which the alpha or gamma isomer is to be separated. The feed mixture is contacted at adsorption conditions with an adsorbent comprising a type Y zeolite having alkaline earth or iron group cations at exchangeable cationic sites, which exclude the alpha isomer, or with a potassium exchanged type X zeolite or calcium exchanged type Y zeolite which are selective for the gamma isomer. The high purity alpha or gamma isomer is recovered as a raffinate or extract product, respectively. Pyridine is a preferred desorbent material.Type: GrantFiled: July 16, 1984Date of Patent: June 10, 1986Assignee: UOP Inc.Inventor: Hermann A. Zinnen
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Patent number: 4480129Abstract: This invention comprises a process for separating p-toluidine from a feed mixture comprising p-toluidine and o- or m-toluidine, 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 Fe, Mn, Co, Ni or Zn, thereby selectively adsorbing the p-toluidine. The remainder of the feed mixture is removed from the adsorbent and the p-toluidine is recovered by desorption at desorption conditions with a desorbent material comprising aniline or an alkyl amine excluding alkyl amines having eight or more carbon atoms per molecule when the adsorbent comprises an X-type zeolite.Type: GrantFiled: September 29, 1983Date of Patent: October 30, 1984Assignee: UOP Inc.Inventors: James W. Priegnitz, Hermann A. Zinnen
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Patent number: 4467126Abstract: An adsorptive separation process for separating the para-isomers of a di-substituted benzene from a feed mixture comprising the para-isomer and at least one other isomer. One substituted group is NO.sub.2 -- and the other group is a normal hydrocarbon having less than 6 carbon atoms per molecule, the halogens, NH.sub.2 --, NO.sub.2 -- or C.tbd.N--. The process comprises contacting the feed mixture with an adsorbent comprising crystalline silica having a silica/alumina mole ratio of at least 12, selectively adsorbing substantially all of the para-isomer to the substantial exclusion of the remaining isomers and thereafter recovering high-purity para-isomer by means of desorption with an appropriate desorbent material.Type: GrantFiled: July 18, 1983Date of Patent: August 21, 1984Assignee: UOP Inc.Inventor: Hermann A. Zinnen