Patents by Inventor Hyoue Shimizu

Hyoue Shimizu 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).

  • Polyurethane resin water dispersion and aqueous polyurethane adhesive
    Patent number: 6881788
    Abstract: Polyurethane resin water dispersion being good in storage stability and excellent in initial adhesion and resistance to moist heat, and aqueous polyurethane adhesive employing the polyurethane resin water dispersion. The polyurethane resin water dispersion is produced in the manner that polyisocyanate is allowed to react with polycaprolactone polyol comprising polycaprolactone polyol having a number average molecular weight of not less than 3,000 and active-hydrogen-group-containing compound having anionic group, to synthesize isocyanate terminated prepolymer, first, and, then, the isocyanate terminated prepolymer thus produced is allowed to react with polyamine in water. The use of the polyurethane resin water dispersion can produce the aqueous polyurethane adhesive having improved storage stability, initial adhesion and resistance to moist heat.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: April 19, 2005
    Assignee: Mitsui Takeda Chemicals, Inc.
    Inventors: Hyoue Shimizu, Hiroyuki Shiraki
  • Polyurethane resin water dispersion and aqueous polyurethane adhesive
    Publication number: 20030060589
    Abstract: Polyurethane resin water dispersion being good in storage stability and excellent in initial adhesion and resistance to moist heat, and aqueous polyurethane adhesive employing the polyurethane resin water dispersion. The polyurethane resin water dispersion is produced in the manner that polyisocyanate is allowed to react with polycaprolactone polyol comprising polycaprolactone polyol having a number average molecular weight of not less than 3,000 and active-hydrogen-group-containing compound having anionic group, to synthesize isocyanate terminated prepolymer, first, and, then, the isocyanate terminated prepolymer thus produced is allowed to react with polyamine in water. The use of the polyurethane resin water dispersion can produce the aqueous polyurethane adhesive having improved storage stability, initial adhesion and resistance to moist heat.
    Type: Application
    Filed: August 15, 2002
    Publication date: March 27, 2003
    Inventors: Hyoue Shimizu, Hiroyuki Shiraki