Patents by Inventor Pong S. Sheih

Pong S. Sheih 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: 5391652
    Abstract: An epoxy ester resin which results from reacting (a) an epoxy resin, (b) a dimerized fatty acid and (c) a monocarboxylic acid. The epoxy ester resins are useful in coating compositions.
    Type: Grant
    Filed: April 23, 1993
    Date of Patent: February 21, 1995
    Assignee: The Dow Chemical Company
    Inventors: David S. Wang, Pong S. Sheih, Loan A. Ho, Charles M. Vetters
  • Patent number: 5386008
    Abstract: Advanced resins and unadvanced epoxy resins are disclosed wherein the unadvanced compound and at least a portion of the advanced epoxy resin contains at least one --O--R.sup.1 --O-- or --(O--CH.sub.2 --CHR.sup.2).sub.n --O -- group as a bridge between two groups selected independently from the group consisting of (1) a saturated or unsaturated cycloaliphatic group, (2) an aromatic group, (3) a group represented by the formula ##STR1## or (4) a group represented by the formula ##STR2## Also disclosed are nucleophilic derivatives thereof, as well as curable compositions and coating compositions containing the advanced or unadvanced epoxy resins or nucleophilic modified advanced or unadvanced epoxy resins. These advanced resins and unadvanced epoxy resins provide coatings with good flexibility or formability as exhibited by good flexural or formable properties determined by reverse impact, T-bend and wedge-bend tests, chip resistance, and with good corrosion resistance and throwpower.
    Type: Grant
    Filed: July 12, 1993
    Date of Patent: January 31, 1995
    Assignee: The Dow Chemical Company
    Inventors: Robert A. Dubois, Allyson Malzman, Duane S. Treybig, Pong S. Sheih, Alan R. Whetten
  • Patent number: 5310854
    Abstract: Advanced resin compositions are prepared from a compound having an average of more than one vicinal epoxide group per molecule and an epoxide equivalent weight of from about 170 to about 200 and a compound having an average of more than one aromatic hydroxyl group per molecule wherein the resultant advanced resin has an epoxide or aromatic hydroxyl equivalent weight of from about 200 to about 50,000.
    Type: Grant
    Filed: August 23, 1989
    Date of Patent: May 10, 1994
    Assignee: The Dow Chemical Company
    Inventors: Ben W. Heinmeyer, Pong S. Sheih, David S. Wang
  • Patent number: 5244998
    Abstract: Advanced resins and unadvanced epoxy resins are disclosed wherein the unadvanced compound and at least a portion of the advanced epoxy resin contains at least one --O--R.sup.1 --O-- or --(O--CH.sub.2 --CHR.sup.2).sub.n --O-- group as a bridge between two groups selected independently from the group consisting of (1) a saturated or unsaturated cycloaliphatic group, (2) an aromatic group, (3) a group represented by the formula ##STR1## or (4) a group represented by the formula ##STR2## Also disclosed are nucleophilic derivatives thereof, as well as curable compositions and coating compositions containing the advanced or unadvanced epoxy resins or nucleophilic modified advanced or unadvanced epoxy resins. These advanced resins and unadvanced epoxy resins provide coatings with good flexibility or formability as exhibited by good flexural or formable properties determined by reverse impact, T-bend and wedge-bend tests, chip resistance, and with good corrosion resistance and throwpower.
    Type: Grant
    Filed: June 17, 1992
    Date of Patent: September 14, 1993
    Assignee: The Dow Chemical Company
    Inventors: Robert A. Dubois, Allyson Malzman, Pong S. Sheih, Alan R. Whetten
  • Patent number: 5151485
    Abstract: Compositions are prepared by the reaction of (A) an advanced composition resulting from reacting (1) at least one of (a) at least one epoxidized triglyceride of a fatty acid, or (b) at least one epoxidized fatty acid having an average of more than one unsaturated group per molecule or (c) at least one diepoxyalkane, or (d) any combination of any two or more of (a), (b) or (c), or (e) a combination of any one or more of (a), (b) or (c) and (f) a diglycidyl ether of a dihydric phenol; with (2) a dihydric phenol; (B) optionally a monohydric phenol; (C) a phosphorous-containing compound; and (D) optionally a base. These compositions can be cured with curing agents which react with aliphatic hydroxyl groups.
    Type: Grant
    Filed: October 30, 1991
    Date of Patent: September 29, 1992
    Assignee: The Dow Chemical Company
    Inventors: Duane S. Treybig, David S. Wang, Pong S. Sheih, Loan A. Ho
  • Patent number: 5147905
    Abstract: Advanced resins and unadvanced epoxy resins are disclosed wherein the unadvanced compound and at least a portion of the advanced epoxy resin contains at least one --O--R.sup.1 --O-- or --(O--CH.sub.2 --CHR.sup.2).sub.n --O-- group as a bridge between two groups selected independently from the group consisting of (1) a saturated or unsaturated cycloaliphatic group, (2) an aromatic group, (3) a group represented by the formula ##STR1## or (4) a group represented by the formula ##STR2## Also disclosed are nucleophilic derivatives thereof, as well as curable compositions and coating compositions containing the advanced or unadvanced epoxy resins or nucleophilic modified advanced or unadvanced epoxy resins. These advanced resins and unadvanced epoxy resins provide coatings with good flexibility or formability as exhibited by good flexural or formable properties determined by reverse impact, T-bend and wedge-bend tests, chip resistance, and with good corrosion resistance and throwpower.
    Type: Grant
    Filed: May 1, 1991
    Date of Patent: September 15, 1992
    Assignee: The Dow Chemical Company
    Inventors: Robert A. Dubois, Duane S. Treybig, Allyson Malzman, Pong S. Sheih, Alan R. Whetten
  • Patent number: 5095050
    Abstract: Compositions are prepared by the reaction of (A) an advanced composition resulting from reacting (1) at least one of (a) at least one epoxidized triglyceride of a fatty acid, or (b) at least one epoxidized fatty acid having an average of more than one unsaturated group per molecule or (c) at least one diepoxyalkane, or (d) any combination of any two or more of (a), (b) or (c), or (e) a combination of any one or more of (a), (b) or (c) and (f) a diglycidyl ether of a dihydric phenol; with (2) a dihydric phenol; (B) optionally a monohydric phenol; (C) a phosphorus-containing compound; and (D) optionally a base. These compositions can be cured with curing agents which react with aliphatic hydroxyl groups.
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: March 10, 1992
    Assignee: The Dow Chemical Company
    Inventors: Duane S. Treybig, David S. Wang, Pong S. Sheih, Loan A. Ho
  • Patent number: 5057557
    Abstract: Epoxy resins are modified by reaction with an acidified polytertiary amine-containing compound. These modified epoxy resins when cured result in products having improved properties.
    Type: Grant
    Filed: May 11, 1990
    Date of Patent: October 15, 1991
    Assignee: The Dow Chemical Company
    Inventors: Duane S. Treybig, Pong S. Sheih, John M. McIntyre
  • Patent number: 4596861
    Abstract: Advanced epoxy resins are prepared from a liquid diglycidyl ether of bisphenol A and bisphenol A which advanced epoxy resins have an equivalent weight in the range of 3,000 to 3,900 and a weight average molecualr weight of 13,000 to 17,000. When these advanced epoxy resins are formulated into can coating compositions they result in coatings having good wet and dry adhesion.
    Type: Grant
    Filed: May 22, 1985
    Date of Patent: June 24, 1986
    Assignee: The Dow Chemical Company
    Inventors: Pong S. Sheih, Manuel C. Tyler, Jr.