Method for manufacturing modified polyolefin resin using a multi-screw extruder in the same direction

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a modified polyolefin resin using a isodirectional multi-screw extruder capable of preventing backflow of raw materials. SOLUTION: The graft weight of at least one modified component selected from the group consisting of an unsaturated carboxylic acid, an anhydride thereof and an unsaturated carboxylic acid derivative with respect to a polyolefin resin is 0.1 to 20% by weight and the weight. When preparing a modified polyolefin resin having an average molecular weight of 5,000 to 300,000 using a multi-screw extruder in the same direction, the raw material containing the polyolefin resin and the modified component, which was put into the multi-screw extruder in the same direction, was used. The raw material mixing part, the melt-kneading part, the reaction part, and the devolatile cooling part are extruded as a modified polyolefin resin in this order via each barrel, and the barrel temperature of the raw material mixing part is 40 to 60 ° C. A method for producing a modified polyolefin resin using a machine. [Selection diagram] None