Search Patents
  • Method of plasticizing thermoplastic polymers
    Patent number: 4632977
    Abstract: A novel process for providing a thermoplastic polymer having novel thermal characteristics including the critical step of masticating the polymer, either continuously or discontinuously, until the melt index of the polymer is substantially increased.
    Type: Grant
    Filed: June 1, 1984
    Date of Patent: December 30, 1986
    Assignee: The Hygenic Corporation
    Inventor: John Riazi
  • Thermoplastic polymer composition comprising trans 1,4-polyisoprene
    Patent number: 4966952
    Abstract: A novel process for providing a thermoplastic polymer having novel thermal characteristics including the critical step of masticating the polymer, either continuously or discontinuously, until the melt index of the polymer is substantially increased.
    Type: Grant
    Filed: December 29, 1987
    Date of Patent: October 30, 1990
    Assignee: The Hygenic Corporation
    Inventor: John Riaza
  • Process for improving the melt flow index of thermoplastic polymers
    Patent number: 4766200
    Abstract: A novel process for providing a thermoplastic polymer having unique thermal characteristics including the step of cooling the polymer during extended mastication until the melt index of the polymer is substantially increased.
    Type: Grant
    Filed: December 23, 1986
    Date of Patent: August 23, 1988
    Assignee: The Hygenic Corporation
    Inventor: John Riazi