Patents by Inventor Mitchell J. Blumenthal

Mitchell J. Blumenthal 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).

  • Hot melt adhesives based on sulfonated polyesters comprising wetness indicator
    Patent number: 6653522
    Abstract: A wetness indicating hot melt adhesive composition comprising a pH adjusting component and an indicating agent which is capable of changing color in response to changes in pH. The adhesive composition may comprise 20 to 80% by weight of a sulfonated polyester, 3 to 30% by weight of an acidic plasticizer and 0.05 to 3% by weight of an indicator.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: November 25, 2003
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Mitchell J. Blumenthal, Charles W. Paul
  • Use of high hydroxyl compounds for water sensitive hot melt adhesives
    Patent number: 6410627
    Abstract: A hot melt adhesive composition comprising (a) greater than 40% by weight of a polymeric component; and (b) 5 to 40% by weight of a high hydroxyl number compound, with hydroxyl number greater than 100 mg KOH/g.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: June 25, 2002
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Charles W. Paul, Mitchell J. Blumenthal
  • Use of anionic or cationic plasticizers with sulfonated polyesters in hot melt formulations
    Patent number: 6001910
    Abstract: A remoistenable hot melt adhesive composition comprising (i) 25 to 80% by weight of a sulfonated polyester;(ii) 3 to 40% by weight of an anionic or cationic plasticizer;(iii) 0 to 40% by weight of a polar tackifier;(iv) 0 to 3% by weight of an antioxidant; and(v) 10 to 35% by weight of a polar wax; and(vi) optionally 0 to 30% nonionic plasticizer, wherein the total of (i)-(vi) to equal 100% by weight.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: December 14, 1999
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Mitchell J. Blumenthal, Charles W. Paul, Matthew L. Sharak
  • Hot melt adhesives based on sulfonated polyesters
    Patent number: 5750605
    Abstract: A hot melt adhesive composition comprising(i) 10 to 90% by weight of a sulfonated polyester condensation polymer;(ii) 0 to 80% by weight of a compatible tackifier;(iii) 0 to 40% by weight of a compatible plasticizer;(iv) 5 to 40% by weight of a compatible wax diluent with a molecular weight below 500 g/mole containing at least one polar functional group, said group being present at a concentration greater than 3.times.10.sup.-3 equivalents per gram;(v) 0 to 60% by weight of a compatible crystalline thermoplastic polymer; and(vi) 0 to 3% by weight of a stabilizer,the total of (i)-(vi) to equal 100% by weight.
    Type: Grant
    Filed: May 23, 1996
    Date of Patent: May 12, 1998
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Mitchell J. Blumenthal, Matthew L. Sharak, Charles W. Paul