Patents by Inventor Darryl K. Barnes

Darryl K. Barnes 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).

  • Increasing the useful range of cationic photoinitiators in stereolithography
    Patent number: 5494618
    Abstract: Polymer precursor formulations suitable for stereolithography may be prepared from compositions containing vinyl ether functionalized compounds and epoxy functionalized compounds plus an effective amount of a cationic photoinitiator and an ultraviolet light-absorbing compound to provide a predetermined depth of cure. Preferably, the ultraviolet light-absorbing compound is anthracene or its derivatives.
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: February 27, 1996
    Assignee: AlliedSignal Inc.
    Inventors: Eugene V. Sitzmann, Russell F. Anderson, Darryl K. Barnes
  • Stereolithography using vinyl ether-epoxide polymers
    Patent number: 5437964
    Abstract: Polymer precursor formulations suitable for stereolithography may be prepared from compositions containing vinyl ether functionalized compounds and epoxy functionalized compounds plus an effective amount of a cationic photoinitiator.
    Type: Grant
    Filed: February 24, 1994
    Date of Patent: August 1, 1995
    Assignee: AlliedSignal Inc.
    Inventors: Stephen C. Lapin, James R. Snyder, Eugene V. Sitzmann, Darryl K. Barnes, George D. Green
  • Preparation of vinyl ether terminated polyesters
    Patent number: 5286835
    Abstract: Vinyl ether terminated ester oligomers having a range of molecular weights are prepared by reacting a vinyl ether terminated polybasic ester with a polyol in the presence of a catalyst. Continual removal of a hydroxy monovinyl ether avoids formation compounds containing acetal moieties. Alternatively, a polybasic ester is chain extended with a polyol with continual removal of the alcohol by-product. Then, the terminal ester moieties are end capped with a monohydroxy vinyl ether. The oligomers have application in coatings and the like.
    Type: Grant
    Filed: August 24, 1992
    Date of Patent: February 15, 1994
    Assignee: Allied-Signal Inc.
    Inventors: George D. Green, James R. Snyder, Darryl K. Barnes
  • Activation of nylon fibers for modification by UV radiation
    Patent number: 5236464
    Abstract: The stain resistance of nylon fibers is improved by attaching stainblocking compounds to the fiber surface using agents which have been grafted to the nylon using UV light and a photoactivator.
    Type: Grant
    Filed: December 16, 1991
    Date of Patent: August 17, 1993
    Assignee: Allied-Signal Inc.
    Inventors: George D. Green, Darryl K. Barnes, Lidia T. Calcaterra, Mathias P. Koljack
  • Stain-resistant polymers derived from itaconic acid useful as coatings for fibers
    Patent number: 5149754
    Abstract: The present invention relates to non-halogenated hydrocarbon polymeric compositions which impart durable stain resistance to fibrous substrates, particularly nylon containing articles. In addition, it relates to fluorine containing polymeric compositions which impart durable stain resistance to fibrous substrates as above. It relates also to processes in which such substrates are treated so as to impart durable stain resistance to them. It relates further to a manufacturing process for preparing the compositions of the invention.
    Type: Grant
    Filed: March 18, 1991
    Date of Patent: September 22, 1992
    Assignee: Allied-Signal Inc
    Inventors: George D. Green, Stephen A. Munk, Darryl K. Barnes
  • Stain-resistant polymers derived from itaconic acid useful as coatings for fibers
    Patent number: 5006408
    Abstract: The present invention relates to non-halogenated hydrocarbon polymeric compositions which impart durable stain resistance to fibrous substrates, particularly nylon containing articles. In addition, it relates to fluorine containing polymeric compositions which impart durable stain resistance to fibrous substrates as above. It relates also to processes in which such substrates are treated so as to impart durable stain resistance to them. It relates further to a manufacturing process for preparing the compositions of the invention.
    Type: Grant
    Filed: April 19, 1990
    Date of Patent: April 9, 1991
    Assignee: Allied-Signal Inc.
    Inventors: George D. Green, Stephen A. Munk, Darryl K. Barnes
  • Stain-resistant polymers derived from the itaconic acid useful as coatings for fibers
    Patent number: 4925906
    Abstract: The present invention relates to non-halogenated hydrocarbon polymeric compositions which impart durable stain resistance to fibrous substrates, particularly nylon containing articles. In addition, it relates to fluorine containing polymeric compositions which impart durable stain resistance to fibrous substrates as above. It relates also to processes in which such substrates are treated so as to impart durable stain resistance to them. It relates further to a manufacturing process for preparing the compositions of the invention.
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: May 15, 1990
    Assignee: Allied-Signal Inc.
    Inventors: George D. Green, Stephen A. Munk, Darryl K. Barnes