Patents Represented by Attorney Robin M. Davis
-
Patent number: 4661606Abstract: Amino acids can be purified and/or concentrated by extracting aqueous mixtures such as fermentation broths by contacting an aqueous mixture containing amino acids with an organic solution containing a water insoluble extractant.Type: GrantFiled: June 6, 1984Date of Patent: April 28, 1987Assignee: Henkel CorporationInventors: Francis W. Tuominen, Ronald R. Swanson, Phillip L. Mattison, Kenneth D. MacKay, Bradley W. Glorvigen
-
Patent number: 4649169Abstract: Liquid molding compositions are provided which include methylol amino compounds and vinyl polymers that can crosslink with such amino compounds. These liquid molding compositions are used to treat fibrous substrates, and, by drying, heating, and molding, a molded, shaped article is produced having a substrate with from about 5 to about 85% by weight of a crosslinked vinyl polymer, from about 1 to 15% by weight of a methylol amino compound that the vinyl polymer is crosslinked to, and less than 10% by weight water.Type: GrantFiled: September 10, 1984Date of Patent: March 10, 1987Assignee: Henkel CorporationInventors: John A. Thompson, Christopher B. Keogh
-
Patent number: 4617406Abstract: Tocopherol homologues found in a tocopherol-containing feed material can be purified by forming a borate tocopherol ester and then distilling the material containing the esterified tocopherol to remove the materials boiling at temperatures lower than the esterified tocopherol. The borate tocopherol esters remaining after distillation are then reacted with a member selected from the group consisting of: Water, methanol, and ethanol to form tocopherol homologues from the borate tocopherol ester, and the boron by product from this reaction is removed. The tocopherol is then recovered by collecting it, distilling it or by any other convenient collection method.Type: GrantFiled: February 11, 1985Date of Patent: October 14, 1986Assignee: Henkel CorporationInventor: Stephen M. Willging
-
Patent number: 4599457Abstract: An improvement in the process for preparing hydroxyarylaldehydes is disclosed where a phenolic compound is reacted with formaldehyde, in the presence of a catalyst such as a titanium or zirconium containing catalyst, optionally in the presence of a catalyst promoter, wherein the improvement is the addition of a yield effective amount of a modifier having the formula: ##STR1## where R.sub.1 is selected from the group consisting of: an alkyl group having from 1 to 12 carbon atoms, a cycloalkyl group that can have 5 and 6 carbon atoms, and an H, and where R.sub.2 is selected from the group consisting of: an alkyl group having from 1 to 12 carbon atoms, and a cyclo alkyl group that can have 5 to 6 carbon atoms; and where R.sub.1 and R.sub.2 can together form a cyclic group that can have 5 and 6 carbon atoms.Type: GrantFiled: March 20, 1985Date of Patent: July 8, 1986Assignee: Henkel CorporationInventors: Phillip L. Mattison, LeRoy Krbechek
-
Patent number: 4550183Abstract: This invention relates to the purification and concentration of tocopherol compounds from an organic feed material containing these compounds. A sufficient amount of caustic methanol is used to contact a tocopherol-containing organic material whereby two phases are formed; one of which is tocopherol-enriched caustic methanol. The phases are separated and the caustic is neutralized. The tocopherol is then recovered from the tocopherol-enriched methanol. One way of recovery is by adding a sufficient amount of water, causing the tocopherol to form a separate phase, which can then be removed in this more purified, concentrated form. Alternatively, the tocopherol can be isolated by removal of the methanol by distillation after acidic neutralization, and then washing the tocopherol with water to remove the salt resulting from neutralization.Type: GrantFiled: August 2, 1984Date of Patent: October 29, 1985Assignee: Henkel CorporationInventor: Stephen M. Willging
-
Patent number: 4468476Abstract: An adsorbent is provided for removing color precursors from detergent range alkyl benzene prior to sulfonation. The adsorbent provided is a bauxite clay having at least one material selected from the group consisting of ferric oxide, titanium dioxide, and zirconium oxide and which contain from about 0.1 to about 20 percent by weight of sulfuric acid, said bauxite clay then being calcined at a temperature and time sufficient to activate the adsorbent prior to use.Type: GrantFiled: January 3, 1984Date of Patent: August 28, 1984Assignee: Conoco Inc.Inventors: Kang Yang, James D. Reedy
-
Patent number: 4460699Abstract: The present invention provides a fixed bed catalyst for the oxychlorination of ethene, alpha olefins and aromatics. More specifically, this invention relates to a catalyst having an impeded center which excludes reactants, or prevents products from forming in the interior of the catalyst. The impeded center may be made inaccessible or it may be inert to reaction. Thin layers of high specific surface area carrier material cover the outer surface of the impeded center. An agent capable of catalyzing oxychlorination reactions is added to the layered catalytic carrier material.Type: GrantFiled: August 4, 1982Date of Patent: July 17, 1984Assignee: Conoco Inc.Inventors: Ronald J. Convers, Robert M. Owens
-
Patent number: 4455289Abstract: A combined process for preparing alumina and alpha-olefins (.alpha.-olefins) is disclosed. The process comprises:(a) reacting tri-(C.sub.2 to C.sub.24) alkylaluminum with ethylene in the presence of nickel catalyst to form triethylaluminum and C.sub.2 to C.sub.24 .alpha.-olefins,(b) adding aluminum tri-(C.sub.4 to C.sub.8) alcoholate to the reaction product of step (a),(c) equilibrating the admixture of step (b) so that substantially all of the triethylaluminum is converted into aluminum ethyl alcoholates, compounds with at least one C.sub.4 to C.sub.8 alcoholate group per molecule,(d) subjecting the equilibrated mixture of step (c) to a fractionation to recover, (1) a C.sub.2 to C.sub.24 .alpha.-olefin fraction, and (2) an aluminum ethyl alcoholate fraction (a mixture of compounds with the general formula Al(C.sub.2 H.sub.6).sub.X (OC.sub.6 H.sub.13).sub.Y (where X is 0 to 2 and Y is 3 to 1) and X+Y=3).(e) adding C.sub.4 to C.sub.8 alcohol to the aluminum ethyl alcoholate fraction to form aluminum tri-(C.Type: GrantFiled: August 6, 1982Date of Patent: June 19, 1984Assignee: Conoco Inc.Inventors: R. L. Poe, D. J. Royer
-
Patent number: 4443638Abstract: A process for preparing alcohols from internal olefins is disclosed. Briefly, the process comprises (a) hydroformylation of internal olefins to aldehydes using a small amount of a ligand modified recycled rhodium catalyst, (b) separating the reaction product from the catalyst by flash vacuum distillation, (c) hydrogenating the aldehydes to form a product containing alcohols, and (d) removing impurities and recovering the desired alcohol product. An important feature of this process, centers around the use of internal olefins to make an alcohol product which has a large amount of linear alcohol and 2-methyl-branched alcohol in the product.Type: GrantFiled: April 19, 1982Date of Patent: April 17, 1984Assignee: Conoco, Inc.Inventor: James A. Yates
-
Patent number: 4443634Abstract: This purification process has been developed for liquid polymer feed streams having one or more impurities present at levels of 2% or less by weight of the stream. This purification process comprises: (a) forcing the liquid polymer feed stream through a spray nozzle into an inert atmosphere at a temperature of from about 68.degree. F. to about 392.degree. F. where the pressure is at or below 1 atmosphere in such a manner to atomize the feed stream into particulate drops having a size in the range of from about 1,000 microns to about 50 microns in diameter, (b) retaining particulate drops under the conditions of (a) and at a temperature in the range of from about 68.degree. F. to about 392.degree. F. for at least 0.10 seconds to form impurity vapors, (c) removing the vaporous impurities that form during step (b), and (d) collecting the purified atomized feed stream liquid wherein the purified feed stream has a vapor pressure no higher than 1.times.10.sup.-3 (mm) of mercury (Hg) at 68.degree. F.Type: GrantFiled: March 29, 1983Date of Patent: April 17, 1984Assignee: Conoco Inc.Inventors: William C. Ziegenhain, Gary L. Horton
-
Patent number: 4433196Abstract: Extremely effective adsorbants are provided for removing color precursors from detergent range alkyl benzenes prior to sulfonation. The adsorbers provided are specific crystalline zeolites in a silica alumina matrix and bauxite clay having at least one material selected from the group consisting of ferric oxide, titanium dioxide and zirconium oxide which is activated by sulfuric acid then calcined to provide the effective adsorbant.Type: GrantFiled: June 25, 1982Date of Patent: February 21, 1984Assignee: Conoco Inc.Inventors: Kang Yang, James D. Reedy
-
Patent number: 4423278Abstract: Color may be removed from colored polyphenylated alkane by contacting this material with certain adsorbants. The adsorbants provided comprise certain crystalline zeolites in a silica alumina matrix and bauxite clay having at least one material selected from the group consisting of ferric oxide, titanium oxide, and zirconium oxide, which is activated by sulfuric acid and then calcined to provide the effective adsorbant.Type: GrantFiled: January 17, 1983Date of Patent: December 27, 1983Assignee: Conoco Inc.Inventors: Kang Yang, James D. Reedy, S. E. McGuire, O. C. Kerfoot
-
Patent number: 4423267Abstract: Iron sulfate supported on alumina or silica alumina and cobalt sulfate supported on alumina are catalysts used for olefin oligomerization. These new catalysts allow olefin oligomerizations to be carried out at lower temperatures than many other known catalysts. The reaction is normally carried out under sufficient pressure to keep the olefin present as a liquid. In addition, the catalysts provide excellent selectivity for the formation of lower olefins and require no water to maintain activity, thereby leading to increased productivity by avoiding problems of polymerization, coking and reactor plugging.Type: GrantFiled: June 1, 1982Date of Patent: December 27, 1983Assignee: Conoco Inc.Inventors: Robin M. Dowling, David P. Higley