Patents by Inventor Don A. Plank

Don A. Plank 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).

  • Novel bisphenol derivatives and uses thereof
    Patent number: 4182725
    Abstract: Novel bisphenol condensation derivatives including polyphosphorous, polyborate, polycarbonate and polysilicate products which are capped with various capping agents such as phenoxy or alkoxy compounds are effective stabilizers for a wide spectrum of hydrocarbon polymeric materials against their thermal oxidative and photochemical degradations.
    Type: Grant
    Filed: April 3, 1978
    Date of Patent: January 8, 1980
    Assignee: Exxon Research & Engineering Co.
    Inventors: Joseph C. Floyd, Don A. Plank
  • Novel bisphenol derivatives and uses thereof
    Patent number: 4101511
    Abstract: Novel bisphenol condensation derivatives including polyphosphorous, polyborate, polycarbonate and polysilicate products which are capped with various capping agents such as phenoxy or alkoxy compounds are efffective stabilizers for a wide spectrum of hydrocarbon polymeric materials against their thermal oxidative and photochemical degradations.
    Type: Grant
    Filed: March 21, 1977
    Date of Patent: July 18, 1978
    Assignee: Exxon Research & Engineering Co.
    Inventors: Joseph C. Floyd, Don A. Plank
  • Photodegradable plastic compositions containing nitrogen heterocyclic compounds
    Patent number: 4042765
    Abstract: Plastic compositions containing polyolefins and substituted nitrogen heterocyclic compounds having the formula: ##STR1## wherein X is nitrogen or CH, and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are from the group hydrogen; a straight or branched chain alkyl group having from 1 to 6 carbon atoms; cyano; nitro; lower alkoxy; fluorine, dialkylamino, phenyl, halo-phenyl, benzyl and halo-benzyl, have been found to be photodegradable plastic materials for use, for example, as wrapping films and agricultural mulching films.
    Type: Grant
    Filed: October 28, 1976
    Date of Patent: August 16, 1977
    Assignee: Exxon Research and Engineering Co.
    Inventors: Joseph C. Floyd, Don A. Plank
  • Photodegradable polyolefin composition containing a dinaphthylphthalate
    Patent number: 4037034
    Abstract: Plastic compositions containing polyolefins and dinaphthylphthalate compounds having the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently are from the group hydrogen; a straight or branched chain alkyl group having from 1 to 6 carbon atoms; cyano; nitro; lower alkoxy; fluorine, dialkylamino, phenyl, halo-phenyl, benzyl and halo-benzyl, have been found to be photodegradable plastic materials for use, for example, as wrapping films and agricultural mulching films.
    Type: Grant
    Filed: October 28, 1976
    Date of Patent: July 19, 1977
    Assignee: Exxon Research and Engineering Company
    Inventor: Don A. Plank
  • Novel polycarbon stabilizers
    Patent number: 4032510
    Abstract: Novel bisphenol condensation derivatives including polyphosphorous, polyborate, polycarbonate and polysilicate products which are capped with various capping agents such as phenoxy or alkoxy compounds are effective stabilizers for a wide spectrum of hydrocarbon polymeric materials against their thermal oxidative and photochemical degradations.
    Type: Grant
    Filed: August 5, 1976
    Date of Patent: June 28, 1977
    Assignee: Exxon Research and Engineering Company
    Inventors: Joseph C. Floyd, Don A. Plank
  • Polymers containing non-extractable/non-volatile additives and processes for their preparation
    Patent number: 3996310
    Abstract: Derivatives of grafted polymers are prepared in solvent phase. The resulting products, which can be tailor-made in terms of certain properties impart, when used in relatively small quantities, certain additive functions to the properties of other polymers or the modified products of the invention can be used by themselves per se for conventional plastic uses.
    Type: Grant
    Filed: August 1, 1975
    Date of Patent: December 7, 1976
    Assignee: Exxon Research and Engineering Company
    Inventors: Joseph C. Floyd, Don A. Plank