Patent ID: 6303069
Filing Date: 2001-10-16
Classification: B29C,B29K

Abstract:
A process for the production of a polymer alloy and for injection molding the polymer alloy in an injection molding machine having a hopper, a cylinder and a mold, which comprises:introducing granules of at least two types of thermoplastically processable polymers, which are incompatible, into the hopper of the injection molding machine,plasticizing and mixing the at least two incompatible polymers in the cylinder of the injection molding machine wherein contents of the cylinder consist essentially of a screw, to form a polymer alloy of multiphase morphology as finely dispersed as possible, andshaping the polymer alloy in the injection molding machine,wherein at least one of the at least two incompatible polymers has one or more functional groups or chain ends which are capable of ionic association, rearrangement, or other chemical reaction with at least one other polymer of the at least two incompatible polymers of the alloy, so that at least in the cylinder of the injection molding machine, ionic association or block copolymer formation occurs between at least a portion of the at least two incompatible polymers employed.