Patents Assigned to Tonen Sekiyukagagaku K.K.
  • Polyolefin composition
    Patent number: 5015679
    Abstract: Polyolefin material having improved resistance to heat and discoloration comprising amount of a stabilizing composition said stabilizing composition comprising a relatively high molecular weight hindered amine compound and an organic phosphorus compound having relatively low hygroscopicity and a hydrotalcite.
    Type: Grant
    Filed: June 1, 1989
    Date of Patent: May 14, 1991
    Assignee: Tonen Sekiyukagagaku K.K.
    Inventor: Tooru Matumura