Patents by Inventor Walter T. Reichle
Walter T. Reichle 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: 5527752Abstract: A catalyst precursor is provided which is useful, when combined with a cocatalyst, in the manufacture of polyolefins. The catalyst precursor is of the formula: ##STR1## where M is a transition metal, preferably Zr or Hf; L is a substituted or unsubstituted, .pi. bonded ligand coordinated to M, preferably a cyclopentadienyl-type ligand; Q can be the same or different and is independently selected from the group consisting of --O, --NR, --CR.sub.2 and --S; Y is either C or S; Z is selected from the group consisting of --OR, --NR.sub.2, --CR.sub.3, --SR, --SiR.sub.3, --PR.sub.Type: GrantFiled: March 29, 1995Date of Patent: June 18, 1996Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Walter T. Reichle, Frederick J. Karol, Gregory T. Whiteker
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Patent number: 5354915Abstract: This invention provides an improved process for converting .alpha.,.beta.-olefinically unsaturated aldehydic or ketonic compounds into the corresponding allylic alcohol using an alcohol as a hydrogen donor. This process is conducted in the presence of a supported tetragonal zirconium oxide catalyst or supported HfO.sub.2, V.sub.2 O.sub.5, NbO.sub.5, TiO.sub.2 and Ta.sub.2 O.sub.5 catalysts.Type: GrantFiled: December 21, 1992Date of Patent: October 11, 1994Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventor: Walter T. Reichle
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Patent number: 5216122Abstract: Residual ethylene oxide is removed from poly(ethylene oxide) by the steps of adding to particles of high molecular weight poly(ethylene oxide) a finely divided solid particulate material which is capable of coating the poly(ethylene oxide) particles and impeding their agglomeration under conditions of heating, heating the particles of poly(ethylene oxide) at a temperature of at least 40.degree. C. and preferably which is near their crystalline melting point, and maintaining the temperature for a sufficient time to reduce the ethylene oxide in the particles of poly(ethylene oxide) to ten ppm or less. In one embodiment, the poly(ethylene oxide) is heated by holding the particles in a heated enclosure; in another, it is heated as a slurry in a liquid medium; in yet another, it is heated by warm gas in a gaseously-fluidized bed; and in a fourth, it is heated by microwave radiation.Type: GrantFiled: May 21, 1991Date of Patent: June 1, 1993Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Walter T. Reichle, Geoffrey A. D'Netto, Guy M. Troy, Meyer R. Rosen, Elke M. A. Clark
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Patent number: 5155145Abstract: A polymer impurity deactivator comprising a metal hydroxide, a hydrotalcite, or another metal oxide compound, or mixtures thereof, each of which compounds or mixtures(i) contain at least one zinc, magnesium, or aluminum cation; and(ii) have been surface treated, or mixed, with a hydrocarbon based or siloxane based amphiphatic compound, each amphipathic compound having one or more polar groups incorporated into its molecular structure to provide a polar group frequency factor of at least about 0.01.Type: GrantFiled: December 11, 1990Date of Patent: October 13, 1992Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: George N. Foster, Walter T. Reichle
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Patent number: 4937387Abstract: An improvement in processes for preparing diaryl sulfones comprising adding a limited amount of water to the reaction product mixture of such processes to form a heavier aqueous phase containing unreacted monosubstituted benzene sulfonic acid with less than an equal amount of water, separating the aqueous phase, and dehydrating the aqueous phase to recover the unreacted sulfonic acid for forming additional diaryl sulfone.Type: GrantFiled: August 23, 1988Date of Patent: June 26, 1990Assignee: Amoco CorporationInventors: Ulrich A. Steiner, Walter T. Reichle
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Patent number: 4667013Abstract: The molecular weight of polyalkylene oxides produced by the polymerization of a cyclic oxide in contact with a catalyst comprising the reaction product of a dihydrocarbyl zinc compound and a linear alkanediol in contact with a silica dispersion aid and nonionic surfactant in an inert diluent is controlled by the continuous addition of a very dilute solution of chain transfer agent having a pKa value of from 9 to 22 to the polymerizing mixture during the polymerization reaction at a carefully controlled rate so as not to terminate the polymerization reaction.Type: GrantFiled: May 2, 1986Date of Patent: May 19, 1987Assignee: Union Carbide CorporationInventor: Walter T. Reichle
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Patent number: 4476324Abstract: Heat treated anionic clay mineral is an improved catalyst for the conversion of acetone to mesityl oxide and isophorone as well as for the aldol condensation of other carbonyl-containing compounds.Type: GrantFiled: June 2, 1982Date of Patent: October 9, 1984Assignee: Union Carbide CorporationInventor: Walter T. Reichle
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Patent number: 4461893Abstract: Derivatives of 1,3,5-triacrylylhexahydro-s-triazine formed by the reaction of acrylonitrile and acrylonitrile derivatives with a compound affording formaldehyde and/or acetaldehyde, demonstrate reinforcement promotion ability comparable that of to 1,3,5-triacrylylhexadro-s-triazine, coupled with enhanced solubility in organic solvents.Type: GrantFiled: March 30, 1982Date of Patent: July 24, 1984Assignee: Union Carbide CorporationInventors: Walter T. Reichle, Louis B. Conte, Jr.
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Patent number: 4458026Abstract: Heat treated anionic clay mineral is an improved catalyst for the conversion of acetone to mesityl oxide and isophorone as well as for the aldo condensation of other carbonyl-containing compounds.Type: GrantFiled: May 25, 1983Date of Patent: July 3, 1984Assignee: Union Carbide CorporationInventor: Walter T. Reichle
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Patent number: 4413123Abstract: 1,3,5-triacrylylhexahydro-s-triazine is prepared as a solution in excess of about 10 weight percent and in yields of up to about 99 percent of theoretical by reacting acrylonitrile and trioxane with a catalytic amount of an acid having a Hammet activity function (H.sub.o) in excess of about 7.3 utilizing methylene chloride as the reaction medium.Type: GrantFiled: March 29, 1982Date of Patent: November 1, 1983Assignee: Union Carbide CorporationInventors: Louis B. Conte, Jr., Walter T. Reichle
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Patent number: 4238627Abstract: An oxidative process for preparing 4,4'-bis(2,6-dihydrocarbylphenols) is provided which comprises contacting with good agitation a disubstituted phenol such as 2,6-di-tertiarybutyl phenol with up to stoichiometric amounts of oxygen in the presence of a small catalytic quantity of a catalyst selected from the group consisting of alkali metal and alkaline earth metal hydroxides, alkali metal and alkaline earth metal salts of a weak acid, amine bases, and mixtures of the same at a temperature from about 50.degree. to 240.degree. C. until a reaction product containing a substantial amount of the corresponding biphenol is formed, said reaction product being substantially free of quinones.Type: GrantFiled: November 16, 1978Date of Patent: December 9, 1980Assignee: Union Carbide CorporationInventor: Walter T. Reichle
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Patent number: 4205187Abstract: A process for preparing p,p'-biphenol is provided which comprises heating a 4,4'-bis(substituted phenol) at elevated temperatures below the decomposition temperature of p,p'-biphenol in the absence of a catalyst under an inert, non-reactive atmosphere for the length of time sufficient to obtain a reaction product containing a substantial amount of p,p'-biphenol while, preferably, removing the olefin by-product formed and then recovering the p,p'-biphenol product.Type: GrantFiled: January 2, 1979Date of Patent: May 27, 1980Assignee: Union Carbide CorporationInventors: Jorge N. Cardenas, Walter T. Reichle
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Patent number: 4165339Abstract: Aldol condensation catalysts have been prepared by interacting stoichiometric amounts of a water soluble salt of a Group II metal and a water soluble aluminum salt with a stoichiometric amount of an alkaline metal or alkaline earth metal, water soluble hydroxide and doping the washed slurry which precipitates with a water soluble lithium or zinc salt.Type: GrantFiled: October 31, 1977Date of Patent: August 21, 1979Assignee: Union Carbide CorporationInventor: Walter T. Reichle
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Patent number: 4153576Abstract: Cyclopentadienyl chromium alkyl/aryl oxides and siloxides have been synthesized which when deposited on silica and treated with a silane show catalytic activity in the polymerization of ethylene. These chromium compounds also can be used for scavenging oxygen and volatile sulfur compounds from various liquid and gaseous streams.Type: GrantFiled: May 2, 1978Date of Patent: May 8, 1979Assignee: Union Carbide CorporationInventors: Frederick J. Karol, Chisung Wu, Walter T. Reichle, Norma J. Maraschin