Patents by Inventor Robert A. Grigsby, Jr.

Robert A. Grigsby, Jr. 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).

  • Publication number: 20070282026
    Abstract: Provided herein are catalysts useful in providing foam products which are produced using an organic poly isocyanate as a starting material. A catalyst according to the present invention includes the tris-(hydroxyethyl)methyl ammonium cation, and optionally potassium cation, in combination with a variety of possible counter anions present to maintain charge balance and for compatibility. A catalyst according to the invention is preferably used in conjunction with one or more conventional tertiary amine catalysts in a foam producing process. The foams may be polyurethane foams, polyisocyanurate foams, flexible foams, or elastomeric foams.
    Type: Application
    Filed: July 22, 2004
    Publication date: December 6, 2007
    Applicant: Huntsman Petrochemical Corporation
    Inventors: Robert Grigsby Jr, Robert Zimmerman, Ernest Rister, Jennifer Pratt
  • Patent number: 7049265
    Abstract: Disclosed herein are compositions useful for introducing metal carboxylate salts as catalysts into systems useful for producing polyurethane and polyisocyanurate foams. The methods permit the introduction of such catalysts in the absence of substantial amounts of water which otherwise cause inferior foams to be produced. A method for producing foam employing the catalysts are also described.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: May 23, 2006
    Assignee: Huntsman Petrochemical Corporation
    Inventors: Robert A. Grigsby, Jr., Robert L. Zimmerman, Ernest L. Rister, Jr.
  • Patent number: 6534555
    Abstract: Provided are catalyst systems which produce flexible polyurethane polyester foams that are color stable, are lower in odor, and uses less catalysts than current most commonly practiced technology. The use of lower amounts of catalysts with low vapor pressure reduces worker exposure to alkaline corrosive materials, reduces pollution through less pounds of volatile organic chemicals (VOC's) and is less expensive.
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: March 18, 2003
    Assignee: Huntsman Petrochemical Corporation
    Inventors: Ernest L. Rister, Jr., Robert A. Grigsby, Jr., Robert L. Zimmerman
  • Patent number: 5241016
    Abstract: The invention is an epoxy resin adhesive composition. The composition comprises:A. An epoxy resin component; andB. A curative component comprising:a curing amount of a polyamine curing agent and 2 to 30 phr. of an adhesion enhancer of comprising a partially hindered polyetherpolyamine.The fast curing adhesive offers high lap shear strength and relatively high peel strength.
    Type: Grant
    Filed: May 29, 1992
    Date of Patent: August 31, 1993
    Assignee: Texaco Chemical Company
    Inventors: Harold G. Waddill, Robert A. Grigsby, Jr., Michael Cuscurida, Robert L. Zimmerman
  • Patent number: 5239041
    Abstract: A process for preparing a polyurea reaction injection molded (RIM) elastomer is described. A hindered polyetherpolyamine is first obtained by reacting a polyol having two or more hydroxyl groups with an effective amount of long chain alkyl epoxide to give an at least partially hindered intermediate having hydroxyl terminations; and then aminating at least one of the hydroxyl terminations on the intermediate to primary amine groups to give an at least partially hindered polyetherpolyamine. The hindered polyetherpolyamine is then reacted with a polyisocyanate in the optional presence of a catalyst to give a polyurea RIM elastomer. The long chain alkyl group provides steric hindrance to the primary aliphatic amine group, which slows down the reactivity of the amine. The slower reactivity of the amine group is useful in RIM and RRIM compositions since it allows for longer shot or flow times, which in turn permit larger parts to be made from existing equipment.
    Type: Grant
    Filed: April 8, 1992
    Date of Patent: August 24, 1993
    Assignee: Texaco Chemical Company
    Inventors: Robert A. Grigsby, Jr., Michael Cuscurida, Robert L. Zimmerman, George P. Speranza
  • Patent number: 5124426
    Abstract: A pourable and/or sprayable polyurea elastomer is disclosed. The elastomer includes an isocyanate, an amine terminated polyoxyalkylene polyol, and a chain extender. The isocyanate is preferably a quasi-prepolymer of an isocyanate and a material selected from at least one polyol, a high molecular weight polyoxyalkyleneamine or a combination thereof. The chain extender includes at least di(methylthio)-toluene diamine. A method for improving the flowability of a polyurea elastomer, thereby permitting the elastomer to be sprayed or, optionally, poured, is also disclosed.
    Type: Grant
    Filed: September 26, 1989
    Date of Patent: June 23, 1992
    Assignee: Texaco Chemical Company
    Inventors: Dudley J. Primeaux, II, Robert A. Grigsby, Jr., Doris M. Rice
  • Patent number: 5106935
    Abstract: The invention relates to reaction injection molded elastomers derived from high molecular weight amine terminated polyethers, an aromatic diamine chain extender and a quasi-prepolymer made from an excess of polyisocyanate reacted with polycarbonate polyols and polyether polyols.
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: April 21, 1992
    Assignee: Texaco Chemical Company
    Inventors: Robert A. Grigsby, Jr., Wheeler C. Crawford, Michael Cuscurdia
  • Patent number: 4992590
    Abstract: A process in which a polyamine initiator is oxyalkylated to form the corresponding polyamine polyoxyalkylene glycol which is then catalytically aminated to provide a polyoxyalkylenepolyamine is disclosed. These compounds are useful as curing agents for epoxy resins and for reaction with isocyanates to manufacture articles, such as automotive body panels, by reaction injection molding.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: February 12, 1991
    Assignee: Texaco Chemical Company
    Inventors: Michael Cuscurida, John M. Larkin, Kathy B. Sellstrom, Robert A. Grigsby, Jr.
  • Patent number: 4952732
    Abstract: Products useful as surfactants, corrosion inhibitors, water repellent agents, paint adhesion promoters, etc. are prepared by reacting formaldehyde and a phenol with an alkyl amine containing internal propoxy or propoxy/ethoxy groups to thereby provide a corresponding Mannich condensate having a desired utility. The Mannich condensates may also be reacted with an alkylene oxide feed stock containing ethylene oxide or propylene oxide or 1,2-butylene oxide or a mixture thereof under conventional alkoxylation conditions to thereby provide a corresponding alkoxylated Mannich condensate having a utility which may be the same as or different from the utility of the initial Mannich condensate.
    Type: Grant
    Filed: June 15, 1984
    Date of Patent: August 28, 1990
    Assignee: Texaco Inc.
    Inventors: George P. Speranza, Robert A. Grigsby, Jr., Ernest L. Yeakey
  • Patent number: 4806615
    Abstract: The invention is reaction injection molded (RIM) elastomer comprising a cured reaction product of primary or secondary amine terminated polyethers of greater than 1500 molecular weight, an aromatic polyisocyanate, a combination of an unsubstituted aromatic diamine chain extender and a substituted acyclic aliphatic diamine chain extender. The invention is also a method of preparation of a RIM polyurea elastomer as described above.
    Type: Grant
    Filed: June 1, 1987
    Date of Patent: February 21, 1989
    Assignee: Texaco Inc.
    Inventors: Doris M. Rice, Robert A. Grigsby, Jr., Richard J. G. Dominguez
  • Patent number: 4742091
    Abstract: This invention relates to reaction injection molded elastomers derived from high molecular weight amine terminated polyethers, a chain extender, an aromatic polyisocyanate and an aditive comprising an amine of the general formula ##STR1## wherein R is selected from the group consisting of alkyl and alkylphenyl each of 8 to 30 carbon atoms, W is OCH.sub.2 CH.sub.2 and/or OCH.sub.2 CH(CH.sub.3), R' is methyl or ethyl, x ranges from 0 to 50, and y ranges from 0 to 14.
    Type: Grant
    Filed: August 13, 1986
    Date of Patent: May 3, 1988
    Assignee: Texaco Inc.
    Inventors: Robert A. Grigsby, Jr., David R. McCoy
  • Patent number: 4732919
    Abstract: This invention relates to a reaction injection molded elastomer made by reacting ingredients comprising a high molecular weight polyol or polyoxyalkylene polyamine, a chain extender and a quasi-prepolymer of a polyoxyalkylene polyamine and an aromatic isocyanate.
    Type: Grant
    Filed: November 6, 1986
    Date of Patent: March 22, 1988
    Assignee: Texaco Inc.
    Inventors: Robert A. Grigsby, Jr., Richard J. G. Dominguez, Wheeler C. Crawford
  • Patent number: 4716193
    Abstract: The invention is a reinforced reaction injection molded elastomer made by reacting in a closed mold amine terminated polyethers of greater than 1500 average molecular weight, having greater than 50% of their active hydrogens in the form of amine hydrogens, a chain extender, an aromatic polyisocyanate, a filler and an effective amount of a silane having the formula:(R').sub.y --Si--(R).sub.xwhere x+y=4; R' is a hydrophobic moiety and R is an alkoxy group, preferably methoxy or ethoxy.
    Type: Grant
    Filed: August 4, 1986
    Date of Patent: December 29, 1987
    Assignee: Texaco, Inc.
    Inventor: Robert A. Grigsby, Jr.
  • Patent number: 4714750
    Abstract: Mannich condensates are prepared from 2,6-di-t-butylphenol, formaldehyde and a polyoxyalkylene amine. The novel compounds are useful as epoxy accelerators and curing agents.
    Type: Grant
    Filed: June 25, 1986
    Date of Patent: December 22, 1987
    Assignee: Texaco Inc.
    Inventors: Robert A. Grigsby, Jr., George P. Speranza
  • Patent number: 4705814
    Abstract: This invention relates to a reaction product of polyoxyalkylene polyamine and an isocyanate wherein the polyoxyalkylene polyamine is present in less than the stoichiometric amount.
    Type: Grant
    Filed: November 6, 1986
    Date of Patent: November 10, 1987
    Assignee: Texaco Inc.
    Inventors: Robert A. Grigsby, Jr., Richard J. G. Dominguez, George P. Speranza
  • Patent number: 4681965
    Abstract: A class of Mannich condensates containing phosphorus prepared by reacting a phenol with formaldehyde and a primay amine, and then reacting the product with formaldehyde and a dialkyl phosphite. Useful applications include use as a fire retardant additive in polyurethane foams.
    Type: Grant
    Filed: August 8, 1985
    Date of Patent: July 21, 1987
    Assignee: Texaco Inc.
    Inventors: George P. Speranza, Michael E. Brennan, Robert A. Grigsby, Jr.
  • Patent number: 4609683
    Abstract: Quasi-prepolymers are made from aromatic isocyanates and aromatic-amine amides which comprise the reaction product of a polyoxyalkylene polyamine selected from the group consisting of diamines, triamines and mixtures thereof, and an isatoic anhydride of the formula: ##STR1## where B is selected from the group consisting of hydrogen, alkyl, nitro, halo, hydroxy, amino and cyano and n is a number from 1 to 4. Such materials are useful for the production of reaction injection molded elastomers having improved properties.
    Type: Grant
    Filed: June 21, 1985
    Date of Patent: September 2, 1986
    Assignee: Texaco Inc.
    Inventors: Robert A. Grigsby, Jr., Richard J. G. Dominguez
  • Patent number: 4609684
    Abstract: Reaction injection molded (RIM) elastomers are made in a one-shot process from certain aromatic-amine amides which comprise the reaction product of a polyoxyalkylene polyamine selected from the group consisting of diamines, triamines and mixtures thereof, and having an average molecular weight of above about 3000 and an isatoic anhydride of the formula: ##STR1## where R is selected from the group consisting of hydrogen, alkyl, nitro, halo, hydroxy, amino and cyano and n is a number of 1-4. Such elastomers have improved tensile strength, tear strength and elongation properties.
    Type: Grant
    Filed: June 21, 1985
    Date of Patent: September 2, 1986
    Assignee: Texaco Inc.
    Inventors: Robert A. Grigsby, Jr., Richard J. G. Dominguez
  • Patent number: 4606837
    Abstract: Water soluble thickeners made by alkoxylating monohydric alcohol hydrophobes are described. The monohydric alcohol should have at least 18 carbon atoms to be properly hydrophobic. In addition, a large proportion of ethylene oxide must be added, such that the molar ratio of ethylene oxide to monohydric alcohol hydrophobe is at least 40:1. Improved results are obtained if 8-15 moles of propylene oxide are added as a block to the single mole of hydrophobe first. The alkoxylations are necessary to provide the desired viscosities and hydrophilic nature. These thickeners are particularly useful in the glycol-water based fluids of this invention.
    Type: Grant
    Filed: January 30, 1985
    Date of Patent: August 19, 1986
    Assignee: Texaco Inc.
    Inventors: Edward E. McEntire, Edward C. Y. Nieh, Robert A. Grigsby, Jr., David R. McCoy
  • Patent number: 4558072
    Abstract: Ethylene glycol along with ethylene glycol derivatives and alcohols are prepared from syngas in improved yields by contacting a mixture of carbon monoxide and hydrogen with a catalyst system comprising a ruthenium-containing compound and a manganese-containing compound, both dispersed in a low melting quaternary phosphonium compound dissolved in a solvent and heating the resulting reaction mixture at a temperature of at least 150.degree. C. and a pressure of at least 30 atm. for sufficient time to produce the desired ethylene glycol and monohydric alcohols, and then recovering the same from the reaction mixture. A rhodium-containing compound may optionally be used with the ruthenium-containing compound.
    Type: Grant
    Filed: November 16, 1983
    Date of Patent: December 10, 1985
    Assignee: Texaco Inc.
    Inventors: Robert A. Grigsby, Jr., John F. Knifton