Patents by Inventor Norman E. Daughenbaugh

Norman E. Daughenbaugh 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: 5502140
    Abstract: A hydrocarbon resin is prepared by (1) thermally polymerizing a mixture consisting essentially of (a) about 40% to 90% by weight based on total monomers of a cyclic diolefin component comprising at least about 50% by weight dicyclopentadiene, and (b) about 60% to 10% by weight based on total monomers of a specified vinyl aromatic component, preferably alpha-methylstyrene; para-methyl-.alpha.-methylstyrene; 2,4-diphenyl-4-methyl-1-pentene, or mixtures thereof, and (2) recovering a product having a Ring and Ball softening point of about 70.degree. to about 150.degree. C. Hydrogenation of this resin produces light colored, thermally stable products that are useful as tackifiers in adhesives.
    Type: Grant
    Filed: October 19, 1994
    Date of Patent: March 26, 1996
    Assignee: Hercules Incorporated
    Inventors: Norman E. Daughenbaugh, Dane G. Goodfellow, Deborah A. Riedl
  • Patent number: 5491214
    Abstract: The color of hydrocarbon resins having carbon-carbon double bonds and containing color bodies is lightened by a hydrotreating process comprising contacting a resin having a weight average molecular weight Mw of 250-10,000 with hydrogen in the presence of a catalyst that promotes the hydrogenation of the color bodies without substantially changing the content of carbon-carbon double bonds in the resin. The preferred catalysts are copper chromite and copper/zinc.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: February 13, 1996
    Assignee: Hercules Incorporated
    Inventors: Norman E. Daughenbaugh, Dane G. Goodfellow
  • Patent number: 5177163
    Abstract: A tackifier resin is prepared by polymerizing a monomer mixture of 10-70% piperylene concentrate and 30-90% of a vinyl aromatic monomer in the presence of a boron trifluoride catalyst and an inert diluent. The resin is water white in color, has a Gardner number of less than one, a softening point of 60.degree. to 120.degree. C. and a polydispersity of 1 to 5. The tackifier is used in formulations based on EVA, block copolymers and polyolefins for hot melt and pressure sensitive adhesive applications.
    Type: Grant
    Filed: June 7, 1991
    Date of Patent: January 5, 1993
    Assignee: Hercules Incorporated
    Inventors: Sung G. Chu, Norman E. Daughenbaugh, Jr., Mark J. Rosner
  • Patent number: 4701517
    Abstract: Disclosed are terpolymers having a Ring and Ball softening point of 69.degree. C. to 130.degree. C. prepared from a vinyl-substituted aromatic hydrocarbon, a monoterpene hydrocarbon and a phenol. The terpolymers are useful as tackifiers in adhesive compositions.
    Type: Grant
    Filed: March 13, 1986
    Date of Patent: October 20, 1987
    Assignee: Hercules Incorporated
    Inventor: Norman E. Daughenbaugh, Jr.