Polymers having an improved heat resistance comprising times imide derivative units

摘要

The invention relates to a process for the anionic polymerization of a maleimide n - substituted in a solvent, and in the presence of at least one organometallic initiator of alkali metal, which is used as initiator, the dry - butyllithium, sodium alcoholates, diphenylmethyl potassium, or naphthalene lithium or sodium; a process for the preparation of polymer containing maleimide n - substituted with narrow distribution of the molecular masses by anionic polymerization of the maleimide in a solvent, and in the presence of an initiator system formed of at least one organometallic initiator of the alkali metal and of at least one mineral salt and / or an organic salt of an alkali metal or alkaline-earth - earth; a polymer based on a maleimide n - substituted with a mean molecular weight of 12 000 - 100 000; a polymer based on a maleimide n - substituted with a polydispersity 1,1 - 1,5; and a polyblock copolymer in which at least one polymer containing maleimide n - substituted is associated with at least one polymer of monomer (meth) acryligue.