Patent ID: 6187870
Filing Date: 2001-02-13
Classification: B29C,C08F

Abstract:
to 300.degree. C. in an extruder equipped with an outlet pressure control device about 0.1 to 20 weight percent of a free radical initiator, about 0.1 to 30 weight percent of an ethylenically unsaturated polycarboxylic acid, anhydride, or ester thereof, and the remainder of a polyolefin containing at least 93 weight percent C3-C10 olefins, wherein said elevated temperature is higher than the atmospheric boiling point of at least one of the components thereby producing an elevated pressure in said extruder of at least 30 psig; and(b) extruding the resulting molten grafted polyolefin having a viscosity of less than 3,000 cP at