Patents Represented by Attorney, Agent or Law Firm Stephen P. Krupp
  • Patent number: 6319979
    Abstract: Disclosed are packages, cartons, cases, and trays comprising a hot melt adhesive, in turn comprising at least one first homogenous linear or substantially linear ethylene polymer having a particular density and melt viscosity at 350° F. (177° C.), up to 60 weight percent wax and up to 40 weight percent tackifier. In particular, disclosed are packages, cartons, cases, and trays comprising a hot melt adhesive characterized by: a) at least one homogeneous linear or substantially linear interpolymer of ethylene with at least one C3-C20 &agr;-olefin interpolymer having a density from 0.850 g/cm3 to 0.895 g/cm3; and b) up to 60 weight percent of at least one tackifying resin; and c) up to 40 weight percent of at least one wax, wherein the hot melt adhesive has a viscosity of less than about 5000 cPs (50 grams/(cm.second)) at 150° C.
    Type: Grant
    Filed: February 2, 2000
    Date of Patent: November 20, 2001
    Assignees: The Dow Chemical Company, H. B. Fuller Licensing & Financing, Inc.
    Inventors: Robert A. Dubois, Cynthia L. Rickey, Steven W. Albrecht, Thomas F. Kauffman, Beth M. Eichler, Maynard Lawrence, Thomas H. Quinn
  • Patent number: 5278272
    Abstract: Elastic substantially linear olefin polymers are disclosed which have very good processability, including processing indices (PI's) less than or equal to 70 percent of those of a comparative linear olefin polymer and a critical shear rate at onset of surface melt fracture of at least 50 percent greater than the critical shear rate at the onset of surface melt fracture of a traditional linear olefin polymer at about the same I.sub.2 and M.sub.w /M.sub.n. The novel polymers have higher low/zero shear viscosity and lower high shear viscosity than comparative linear olefin polymers.
    Type: Grant
    Filed: September 2, 1992
    Date of Patent: January 11, 1994
    Assignee: The Dow Chemical Company
    Inventors: Shih-Yaw Lai, John R. Wilson, George W. Knight, James C. Stevens
  • Patent number: 5272236
    Abstract: Substantially linear olefin polymers having a melt flow ratio, I.sub.10 /I.sub.2, .gtoreq.5.63, a molecular weight distribution, M.sub.w /M.sub.n, defined by the equation: M.sub.w /M.sub.n .ltoreq.(I.sub.10 /I.sub.2)-4.63, and a critical shear stress at onset of gross melt fracture of greater than about 4.times.10.sup.6 dyne/cm.sup.2 and their method of manufacture are disclosed. The substantially linear olefin polymers preferably have at least about 0.01 long chain branches/1000 carbons and a molecular weight distribution from about 1.5 to about 2.5. The new polymers have improved processability over conventional olefin polymers and are useful in producing fabricated articles such as fibers, films, and molded parts.
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: December 21, 1993
    Assignee: The Dow Chemical Company
    Inventors: Shih-Yaw Lai, John R. Wilson, George W. Knight, James C. Stevens, Pak-Wing S. Chum
  • Patent number: 5006369
    Abstract: A process for removing contaminants such as phenolic-containing dusts and mists from an inert gaseous process stream by contacting the gaseous stream with an aqueous alkali metal hydroxide solution whereby the contaminants react with the alkali metal hydroxide to produce alkali metal salts of the contaminant compounds and produce water soluble contaminant salts.
    Type: Grant
    Filed: August 5, 1988
    Date of Patent: April 9, 1991
    Assignee: The Dow Chemical Company
    Inventor: Robert P. Shirtum