Patents by Inventor Daryl Stein

Daryl Stein 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).

  • Blends of phosphites and antioxidants
    Patent number: 6770693
    Abstract: This invention discloses blends of phosphites comprising bis-(2,4-dicumylphenyl) pentaerythritol diphosphite and hindered phenol antioxidants useful as stabilizers against thermooxidative degradation of polymers during melt processing. Polymer compositions comprising the blends show improved resistance to thermooxidative degradation during melt processing as measured by melt flow index and yellowness index.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: August 3, 2004
    Assignee: Dove Chemical Corporation
    Inventors: Daryl Stein, Don R. Stevenson, Satyan R. Kodali, Marc Nolen
  • Blends of phosphites and antioxidants
    Publication number: 20020040081
    Abstract: This invention discloses blends of phosphites comprising bis-(2,4-dicumylphenyl) pentaerythritol diphosphite and hindered phenol antioxidants useful as stabilizers against thermooxidative degradation of polymers during melt processing. Polymer compositions comprising the blends show improved resistance to thermooxidative degradation during melt processing as measured by melt flow index and yellowness index.
    Type: Application
    Filed: September 25, 2001
    Publication date: April 4, 2002
    Applicant: Dover Chemical
    Inventors: Daryl Stein, Don R. Stevenson, Satyan R. Kodali, Marc Nolen