Patents by Inventor William David Weir

William David Weir 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).

  • Transesterification process
    Patent number: 6515138
    Abstract: An improved transesterification process is disclosed for forming certain (meth)acrylates by the transesterification of an alkyl (meth)acrylate with a hydroxyl alkyl imidazolidin-2-one using a transesterification catalyst in the presence of a polymerization inhibitor.
    Type: Grant
    Filed: March 6, 2002
    Date of Patent: February 4, 2003
    Assignee: Rohm and Haas Company
    Inventors: William David Weir, Donald Robert Weyler, William Joseph Grieco
  • Low odor reactive coalescent
    Patent number: 6509494
    Abstract: A process is provided for preparing a low odor composition containing a dicyclopentenyl ester including the steps of preparing a distillation mixture containing the dicyclopentenyl ester and from 10 to 10,000 parts per million by weight based on weight of the dicyclopentenyl ester, of a suitable inhibitor; distilling the distillation mixture at a temperature in the range of 140° C. to 250° C.; collecting a first distillation fraction of the dicyclopentenyl ester; and then collecting a second distillation of the dicyclopentenyl ester; wherein the level of dicyclopentenyloxy(meth)acrylate in the second distillation fraction is in the range of 0 to 0.2 weight %, based on the weight of the dicyclopentenyl ester in the second distillation fraction. The second distillation fraction provides a low odor composition of the dicyclopentenyl ester which is useful as a reactive coalescent.
    Type: Grant
    Filed: February 23, 2000
    Date of Patent: January 21, 2003
    Assignee: Rohm and Haas Company
    Inventor: William David Weir
  • Transesterification process
    Publication number: 20020177719
    Abstract: An improved transesterification process is disclosed for forming certain (meth)acrylates by the transesterification of an alkyl (meth)acrylate with a hydroxyl alkyl imidazolidin-2-one using a transesterification catalyst in the presence of a polymerization inhibitor.
    Type: Application
    Filed: March 6, 2002
    Publication date: November 28, 2002
    Inventors: William David Weir, Donald Robert Weyler, William Joseph Grieco
  • Reactive coalescents
    Patent number: 6451380
    Abstract: Compounds useful as reactive coalescents and methods of improving the stability of reactive coalescents are disclosed. A process for the preparation of low molecular weight polymers which are also useful as reactive coalescents is also disclosed.
    Type: Grant
    Filed: March 25, 1998
    Date of Patent: September 17, 2002
    Inventors: David Gerald Speece, Jr., William David Weir, Eric Karl Eisenhart, Michael Damian Bowe, Martha Alice Harbaugh Wolfersberger