Patents by Inventor George F. Schaefer

George F. Schaefer 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).

  • Patent number: 9676924
    Abstract: A method of making a benzyl cis-cyclohexane 1,2-dicarboxylate triester having the steps: a. forming a reaction mixture by reacting the following three components: i. a synthetic or biobased reagent selected from the group consisting of an alpha-hydroxyester and a beta-hydroxyester, ii. an anhydride selected from the group consisting of cis-hexahydrophthalic anhydride, 4-methylcyclohexane-1,2-dicarboxylic anhydride, and 3-methylcyclohexane-1,2-dicarboxylic anhydride, and iii. an alkylamine catalyst; and b. contacting benzyl chloride with the reaction mixture to yield a product that is free of phthalates and includes at least one benzyl cis-cyclohexane 1,2-dicarboxylate triester.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: June 13, 2017
    Assignee: Polymer Additives Inc.
    Inventors: John D. Bradshaw, Hongqiao Wu, George F. Schaefer, Larry J. Baldwin, Ronald J. Raleigh, Jr., Anne M. Lawson, Brenda Hollo
  • Publication number: 20160145189
    Abstract: A method of making a benzyl cis-cyclohexane 1,2-dicarboxylate triester having the steps: a. forming a reaction mixture by reacting the following three components: i. a synthetic or biobased reagent selected from the group consisting of an alpha-hydroxyester and a beta-hydroxyester, ii. an anhydride selected from the group consisting of cis-hexahydrophthalic anhydride, 4-methylcyclohexane-1,2-dicarboxylic anhydride, and 3-methylcyclohexane-1,2-dicarboxylic anhydride, and iii. an alkylamine catalyst; and b. contacting benzyl chloride with the reaction mixture to yield a product that is free of phthalates and includes at least one benzyl cis-cyclohexane 1,2-dicarboxylate triester.
    Type: Application
    Filed: November 25, 2015
    Publication date: May 26, 2016
    Applicant: Valtris Specialty Chemicals
    Inventors: John D. Bradshaw, Hongqiao Wu, George F. Schaefer, Larry J. Baldwin, Ronald J. Raleigh, JR., Anne M. Lawson, Brenda Hollo
  • Patent number: 9221958
    Abstract: A process of transesterifying biobased epoxidized vegetable oils with a dialkyl carbonate produces mixtures of epoxidized fatty acid cyclic glycerin carbonate esters and epoxidized fatty acid alkyl esters.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: December 29, 2015
    Assignee: Valtris Specialty Chemicals
    Inventors: John D. Bradshaw, George F. Schaefer, Larry J. Baldwin, Ronald J. Raleigh, Jr., Brenda Hollo
  • Publication number: 20150057397
    Abstract: A process of transesterifying biobased epoxidized vegetable oils with a dialkyl carbonate produces mixtures of epoxidized fatty acid cyclic glycerin carbonate esters and epoxidized fatty acid alkyl esters.
    Type: Application
    Filed: August 23, 2013
    Publication date: February 26, 2015
    Applicant: Ferro Corporation
    Inventors: John D. Bradshaw, George F. Schaefer, Larry J. Baldwin, Ronald J. Raleigh, JR., Brenda Hollo
  • Publication number: 20100113664
    Abstract: Compounds useful as plasticizers and the synthesis thereof are disclosed. In general, the invention includes mixed alkyl/aryl asymmetric cyclic diesters where the aryl and alkyl ester moieties are attached to a cyclic structure at vicinal carbons. The invention also includes synthetic processes of making such compounds. Blends of these asymmetric cyclic diesters with other plasticizers are demonstrated to be of use in plasticizing polymers.
    Type: Application
    Filed: December 10, 2009
    Publication date: May 6, 2010
    Applicant: FERRO CORPORATION
    Inventors: John D. Bradshaw, George F. Schaefer, Larry J. Baldwin, Ronald J. Raleigh, JR., Brenda Hollo
  • Publication number: 20090312470
    Abstract: Compounds useful as plasticizers and the synthesis thereof are disclosed. In general, the invention includes mixed alkyl/aryl diesters where the aryl and alkyl ester moieties are attached to a cyclic structure at vicinal carbons. The invention also includes synthetic processes of making such compounds.
    Type: Application
    Filed: April 10, 2009
    Publication date: December 17, 2009
    Applicant: FERRO CORPORATION
    Inventors: John D. Bradshaw, George F. Schaefer, Larry J. Baldwin, Ronald J. Raleigh, JR., Brenda Hollo
  • Patent number: 7498372
    Abstract: The present invention provides compounds having both a pendent ether group and a pendent ester group that are useful as plasticizers for polymer resin and methods of making and using the same. In one embodiment of the invention, compounds according to the invention are formed by converting at least one, but not all, of the hydroxyl groups of a polyol having three or more hydroxyl groups (e.g., gylcerol, pentaerythritol or dipentaerythritol) to a pendent ether group to form a partially-etherized intermediate, and then converting at least one of the remaining hydroxyl groups in the partially-etherized intermediate to a pendent ester group.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: March 3, 2009
    Assignee: Ferro Corporation
    Inventor: George F. Schaefer
  • Patent number: 5177049
    Abstract: A process for the production of para-oriented dicarboxylic aromatic acids is disclosed in which an aromatic compound, having a tertiary alkyl group, is oxidized with molecular oxygen in the presence of a catalytic composition comprising a cobalt salt, a minor amount of a manganese salt, and a source of chloride in the presence of a solvent.
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: January 5, 1993
    Assignee: Monsanto Company
    Inventors: Roy A. Periana, George F. Schaefer
  • Patent number: 5068407
    Abstract: A process for the production of para-oriented dicarboxylic aromatic acids is disclosed in which an aromatic compound, having a tertiary alkyl group, is oxidized with molecular oxygen in the presence of a catalytic composition comprising a cobalt salt, a minor amount of a manganese salt, and a source of chloride in the presence of a solvent.
    Type: Grant
    Filed: January 31, 1990
    Date of Patent: November 26, 1991
    Assignee: Monsanto Company
    Inventors: Roy A. Periana, George F. Schaefer
  • Patent number: 4598162
    Abstract: Novel, liquid mixtures of isomeric aldehydes and alcohols are described in the C.sub.11 -C.sub.16 carbon range, the compounds being characterized by a main carbon branched at the position and moderate additional branching in most isomers; the aldehyde mixtures are prepared by an economic route from olefins involving oxo and aldol reaction with the reaction conducted in such a way as to give a high percentage of aldolable product, and preferably with a base catalyzed aldol reaction conducted under conditions to make high conversions attainable. The aldehyde mixtures can be hydrogenated to alcohols and converted to novel ethoxylates or sulfate compositions suitable for use as biodegradable detergents; or hydrogenated and oxidized to novel carboxylic acid compositions also suitable for detergent use.
    Type: Grant
    Filed: November 4, 1983
    Date of Patent: July 1, 1986
    Assignee: Monsanto Company
    Inventors: Denis Forster, George F. Schaefer, George E. Barker
  • Patent number: 4518809
    Abstract: A novel, liquid mixture of C.sub.14 isomeric alcohols is described which is suitable for use in forming effective and biodegradable detergents, the alcohols being characterized by a 5-carbon branch at the 2-position and moderate additional branching in most isomers; the alcohols are prepared by a novel economic route from propylene dimer, involving oxo, aldol and hydrogenation reactions with the oxo reaction conducted in such a way as to give a high percentage of aldolable product and preferably with a base-catalyzed aldol reaction conducted under particular conditions to make high conversions attainable.
    Type: Grant
    Filed: June 1, 1983
    Date of Patent: May 21, 1985
    Assignee: Monsanto Company
    Inventors: Denis Forster, George F. Schaefer
  • Patent number: 4087463
    Abstract: Hydrogenolysis of hydrobenzoins [1,2-bis(aryl)ethane-1,2-diols] in the presence of a catalyst comprising cobalt carbonyl yields 1,2-bis(aryl)ethanes. The process is particularly directed to the production of 1,2-bis(4-hydroxyphenyl)ethane from 4,4-dihydroxyhydrobenzoin [1,2-bis(4-hydroxyphenyl)ethane-1,2-diol].
    Type: Grant
    Filed: December 22, 1976
    Date of Patent: May 2, 1978
    Assignee: Monsanto Company
    Inventors: Denis Forster, George F. Schaefer