PROCESS FOR PRODUCING MODIFIED OLEFIN POLYMER

摘要

A process for producing a modified olefin polymer which comprises the following steps: (1) a step in which 100 parts by weight of an olefin polymer, 0.01-20 parts by weight of an unsaturated compound having a polar group, and 0.001-20 parts by weight of an organic peroxide are mixed together in a continuous extruder at a temperature (T1) not higher than a decomposition temperature (Th1) at which the organic peroxide has a half-life period of 1 hour, for a time period (S1) shorter than the half-life period (Sh1) of the organic peroxide as measured at the temperature (T1), whereby a first mixture is produced; (2) a step in which the first mixture is kneaded in the continuous extruder at a temperature (T2) not lower than a decomposition temperature (Th2) at which the organic peroxide has a half-life period of 10 seconds, for a time period (S2) which is at least three times the half-life period (Sh2) of the organic oxide as measured at the temperature (T2), whereby a second mixture is produced; and (3) a step in which the second mixture is kneaded in the continuous extruder at a temperature (T3) not higher than a decomposition temperature (Th3) at which the organic peroxide has a half-life period of 10 hours, for a time period (S3) not shorter than the time period (S2).