Patent ID: 6056898
Filing Date: 2000-05-02
Classification: B01J,C07C,C08K

Abstract:
A process for the production of pellets of a sterically hindered phenol antioxidant having a balanced hardness which comprises(a) dissolving a first portion of said sterically hindered phenol antioxidant in a solvent consisting essentially of at least one solvent of the group consisting of methylene chloride, chloroform, toluene, acetone, methylethylketone, xylene, cyclohexane, styrene, methylcyclohexane and hexane so as to form a solution of said sterically hindered phenol antioxidant in said solvent;(b) contacting a second portion of said sterically hindered phenol antioxidant with said solution of step (a) in an amount sufficient to form a paste of said second portion of said sterically hindered phenol antioxidant;(c) extruding the resulting paste of said sterically hindered phenol antioxidant as formed in step (b) so as to form strands thereof;(d) cutting the resulting strands of said sterically hindered phenol antioxidant as formed in step (c) so as to form pellets thereof;(e) drying the resulting pellets of said sterically hindered phenol antioxidant as formed in step (d) so as to form dried pellets thereof having a balance hardness.