Patents Represented by Attorney William P. Heath, Jr.
  • Patent number: 5703229
    Abstract: Provided are new compounds useful as near infrared fluorophoric markers. In the practice of this invention a method is also provided for tagging thermoplastic containers using near infrared fluorescing compounds or copolymerized residues readily capable of detection. The new compounds are phthalocyanine and naphthalocyanine derivatives which are covalently bonded to substituted silicon and aluminum compounds. The methods, compositions, and compounds described herein thus provide a total system useful for marking, for identification purposes, the various classes of thermoplastic wastes, so that they can be identified, sorted, and subsequently recycled.
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: December 30, 1997
    Assignee: Eastman Chemical Company
    Inventors: James J. Krutak, Michael R. Cushman, Clarence A. Coates, William W. Parham, Max A. Weaver, Gabor Patonay
  • Patent number: 5338606
    Abstract: Disclosed are polyester adhesive compositions which exhibit increased melt viscosity and improved adhesion comprised of residues of terephthalic acid, ethylene glycol and diethylene glycol and having reacted therewith or copolymerized therein the residue of a phosphite ester compound and optionally containing a phenolic antioxidant. Also disclosed are articles coated with the polyester compositions and bonded laminate articles based on the compositions.
    Type: Grant
    Filed: July 12, 1993
    Date of Patent: August 16, 1994
    Assignee: Eastman Chemical Company
    Inventors: Alan W. White, Barry G. Pearcy, Marc A. Strand, Joey C. Carico
  • Patent number: 5322931
    Abstract: A solution phase process for making peptides having biological activity or peptide intermediates which can be used to prepare peptides having biological activity is described. The process involves the condensation reaction of two peptide fragments.
    Type: Grant
    Filed: October 22, 1992
    Date of Patent: June 21, 1994
    Assignee: Eastman Kodak Company
    Inventors: John C. Hubbs, Stephen W. Parker
  • Patent number: 5321074
    Abstract: The present invention relates to a process for preparing poly(ethylene-2,6-naphthalene dicarboxylate) polymers wherein a low concentrations of an alkali metal salt is present. More specifically, 15 ppm to 100 ppm of an alkali metal derived from an alkali metal salt is added in the melt polymerization reaction mixture during formation of such polymers. The polymers are useful in applications where improved hydrolytic stability at elevated temperatures and high humidity (>50% relative humidity) are required.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: June 14, 1994
    Assignee: Eastman Chemical Company
    Inventors: Jimmy R. Trotter, Bobby J. Sublett
  • Patent number: 5319127
    Abstract: Disclosed are a class of phenolic-hydrazide compounds of diverse structure which are useful as stabilizers for polyolefins. The phenolic-hydrazide compounds inhibit oxidative degradation of polyolefins which is attributable to heat and/or ultraviolet light and is promoted or accelerated by metals, e.g., copper, in contact with the polyolefin.
    Type: Grant
    Filed: September 23, 1993
    Date of Patent: June 7, 1994
    Assignee: Eastman Chemical Company
    Inventors: Richard H. S. Wang, Ping P. Shang, Daniel A. Jervis
  • Patent number: 5319129
    Abstract: Disclosed is a process for the preparation of a dimethyl cyclohexanedicarboxylate by the hydrogenation of the analogous dimethyl benzenedicarboxylate ester in the presence of a class of palladium on alumina catalysts which have a unique combination of characteristics. The use of the catalysts permits the process to be carried out at significantly lower process pressures.
    Type: Grant
    Filed: June 15, 1993
    Date of Patent: June 7, 1994
    Assignee: Eastman Kodak Company
    Inventors: Bruce L. Gustafson, Yeong-Jen Kuo, Brent A. Tennant
  • Patent number: 5315019
    Abstract: Disclosed is a continuous process for the manufacture of 2,5-dihydrofurans by the isomerization of .gamma.,.delta.-epoxyalkenes in the liquid phase in the presence of a catalyst system comprising an onium iodide compound and a Lewis acid and a process solvent comprising a mixture of the 2,5-dihydrofuran product of the process and an oligomer of the .gamma.,.delta.-epoxyalkenes reactant.
    Type: Grant
    Filed: October 19, 1992
    Date of Patent: May 24, 1994
    Assignee: Eastman Chemical Company
    Inventors: Gerald W. Phillips, Stephen N. Falling, Stephen A. Godleski, John R. Monnier
  • Patent number: 5314073
    Abstract: This invention relates to a process for beneficiating a silicious phosphate ore by flotation, the process comprising the steps of conditioning an aqueous slurry of phosphate ore at a pH of from 7.5 to 10.5 with a fatty acid and a fuel oil and aerating the conditioned phosphate slurry to float the phosphate, the improvement comprising conditioning the aqueous phosphate slurry prior to aeration with a water dispersible sulfo-polyester having a glass transition temperature of 28.degree. C. to 60.degree. C. and consisting essentially of repeat units from a dicarboxylic acid, a diol and a difunctional sulfomonomer.
    Type: Grant
    Filed: May 3, 1993
    Date of Patent: May 24, 1994
    Assignee: Eastman Kodak Company
    Inventors: Mahendra K. Sharma, George J. O'Neill, Brij M. Moudgil
  • Patent number: 5312931
    Abstract: Disclosed are improved processes for the recovery of 3,4-epoxy-1-butene (EpB) from an epoxidation effluent comprising EpB, butadiene, oxygen and butane obtained by the selective epoxidation of butadiene with an oxygen-containing gas in the presence of a catalyst and an inert gas. EpB is separated from the effluent by means of an absorption process using liquid mixture of butadiene and butane as the absorbent material. The inclusion of butane in the epoxidation and recovery processes permits the use of lower pressures in the absorption of the EpB product.
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: May 17, 1994
    Assignee: Eastman Chemical Company
    Inventor: Jerome L. Stavinoha, Jr.
  • Patent number: 5312891
    Abstract: Provided are enhanced phenolic-functional polyesters which are useful in enamel compositions. The enamel compositions provide coatings which exhibit superior hardness, impact resistance, acid resistance, and weatherability heretofore unachievable with other polyester-based coatings.
    Type: Grant
    Filed: August 16, 1993
    Date of Patent: May 17, 1994
    Assignee: Eastman Kodak Company
    Inventor: Thauming Kuo
  • Patent number: 5312892
    Abstract: Provided are enhanced phenolic-functional polyesters which are useful in enamel compositions. The enamel compostions provide coatings which exhibit superior hardness, impact resistance, acid resistance, and weatherability heretofore unachievable with other polyester-based coatings.
    Type: Grant
    Filed: August 16, 1993
    Date of Patent: May 17, 1994
    Assignee: Eastman Kodak Company
    Inventor: Thauming Kuo
  • Patent number: 5310857
    Abstract: This invention relates to a poly(ethylene 2,6-naphthalene dicarboxylate) composition having reduced fluorescence. More specifically, the composition contains poly(ethylene 2,6-naphthalene dicarboxylate) with 0.1 to 5 mole percent of a copolymerizable aromatic ketone. The polyesters are useful for packaging applications where clarity and/or aesthetic appeal are of concern.
    Type: Grant
    Filed: August 9, 1993
    Date of Patent: May 10, 1994
    Assignee: Eastman Chemical Company
    Inventors: Allan S. Jones, David E. Mills, Mitchell A. Winnik
  • Patent number: 5306567
    Abstract: Provided are polyester resins containing hydroxy functionalized isophthalate ester moieties useful in coating compositions. The invention provides both solvent-borne as well as water-borne coating compositions comprised of the resins and a crosslinker such as a melamine-type crosslinker. Polyester resins of the present invention having a T.sub.8 of greater than about 50.degree. C. are useful in thermosetting powder coating compositions. The coatings thus provided possess excellent acid resistance, hardness, impact resistance, and stain resistance.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: April 26, 1994
    Assignee: Eastman Kodak Company
    Inventors: Thauming Kuo, Charles H. Foster, Yeong-Ho Chang
  • Patent number: 5302740
    Abstract: Disclosed are certain poly-methine compounds having the formula ##STR1## wherein each R.sup.1 is independently selected from cyano; carboxy; alkenyloxycarbonyl; an unsubstituted or substituted alkoxycarbonyl, cycloalkoxycarbonyl or aryloxycarbonyl radical; an unsubstituted or substituted, carbocyclic or heterocyclic aryl radical; an unsubstituted or substituted alkanoyl, cycloalkanoyl or aroyl radical; an unsubstituted or substituted carbamoyl radical; or an unsubstituted or substituted alkylsulfonyl, cycloalkylsulfonyl or arylsulfonyl radical; each R.sup.2 is independently selected from cyano or an unsubstituted or substituted alkoxycarbonyl, cycloalkoxycarbonyl or aryloxycarbonyl radical; each A is independently selected from an unsubstituted or substituted 1,2-phenylene or 1,2-naphthylene radical; each Z is independently selected from --O-- or --S--; and L is an organic linking group bonded by non-oxo carbon atoms to each Z atom.
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: April 12, 1994
    Assignee: Eastman Kodak Company
    Inventors: James J. Krutak, Max A. Weaver, Clarence A. Coates, Jr., Samuel D. Hilbert, Terry A. Oldfield, William W. Parham, Wayne P. Pruett
  • Patent number: 5302744
    Abstract: Disclosed are a class of phenolic-hydrazide compounds of diverse structure which are useful as stabilizers for polyolefins. The phenolic-hydrazide compounds inhibit oxidative degradation of polyolefins which is attributable to heat and/or ultraviolet light and is promoted or accelerated by metals, e.g., copper, in contact with the polyolefin.
    Type: Grant
    Filed: March 27, 1992
    Date of Patent: April 12, 1994
    Assignee: Eastman Kodak Company
    Inventors: Richard H. S. Wang, Ping P. Shang, Daniel A. Jervis
  • Patent number: 5300198
    Abstract: A distillation process for the separation of acetic anhydride from a mixture thereof with ethylidene diacetate wherein the mixture of acetic anhydride and ethylidene diacetate is fed to the mid section of a distillation column and a small amount of acetic acid is fed separately to the lower section of the column. The addition of the acetic acid suppresses tar formation during the distillation process.
    Type: Grant
    Filed: April 5, 1993
    Date of Patent: April 5, 1994
    Assignee: Eastman Kodak Company
    Inventors: Donald W. Lane, Ronnie D. Lilly
  • Patent number: 5296587
    Abstract: The present invention relates to a process for copolymerizing a dicarboxylic acid, a dialkyl ester, and a diol in the presence of a transesterification catalyst. The process involves heating a mixture containing carboxylic acids and esters in excess diol at elevated temperatures in the presence of a transesterification catalyst and returning any vaporized diol to the reaction vessel until the theoretical amount of alcohol and/or water have been evolved. The alcohol and/or water of reaction is not allowed to return to the vessel. When the theoretical weight of alcohol and/or water is collected, the excess diol is removed and the polymerization is allowed to proceed.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: March 22, 1994
    Assignee: Eastman Chemical Company
    Inventors: Charles E. Sumner, Jr., Gary D. Boone
  • Patent number: 5294703
    Abstract: Provided is a novel improved process for the preparation of .alpha.-D-cellobiose octaacetate via the acetylative degradation of cellulose or cellulose acetate. The title compound is provided in high yield and quality in a facile one-pot process, amenable to large-scale synthesis.
    Type: Grant
    Filed: April 7, 1993
    Date of Patent: March 15, 1994
    Assignee: Eastman Kodak Company
    Inventors: John A. Hyatt, Tony L. Sander, D. Mark Naylor, Bobby L. Bernard
  • Patent number: 5294650
    Abstract: This invention relates to a process for preparing aqueous blends of sulfo-polyesters and solid acrylic resins without volatile organic compounds (VOC's) and surfactants. More specifically, the acrylic resins are characterized by an inverse relationship between the molecular weight and acid number of the resin, and the sulfo-polyesters contain at least 12 mole percent of a difunctional sulfomonomer. The aqueous sulfo-polyester/acrylic resin blends of the present invention are useful in inks, overprint varnishes, primers, paints, and coatings.
    Type: Grant
    Filed: February 8, 1993
    Date of Patent: March 15, 1994
    Assignee: Eastman Chemical Company
    Inventor: Mahendra K. Sharma
  • Patent number: 5294483
    Abstract: Disclosed is a method of providing a thin copolyester coating on paper wherein the coating has good peel strength which comprises extruding a film of copolyester onto paper to form a coated sheet and passing the paper through a nip formed by a pair of cooperating chill and pressure rolls, wherein the copolyester consists essentially of repeat units from terephthalic acid, ethylene glycol, about 1.5-20 mol % of an aliphatic or cycloaliphatic glycol having 2 to 10 carbon atoms, and 0 to about 1.0 mol % of a polyfunctional branching agent. Also disclosed is the coated paper prepared by this method.
    Type: Grant
    Filed: November 23, 1992
    Date of Patent: March 15, 1994
    Assignee: Eastman Chemical Company
    Inventors: Randy S. Beavers, Sara S. Wells, James C. Williams