PROCESS FOR THE PREPARATION OF GRAFTED POLYMERS OF ALPHA-SUBSTITUTED-BETA- PROPIOLACTONE ON AMORPHOUS BASE POLYMERS

摘要

CASE 1221PROCESS FOR THE PREPARATION OF CRAFTED POLYMERSOF ALPHA- SUBSTITUTED- BETA- PROPIOLACTONE ON AMORPHOUSBASE POLYMERSABSTRACT OF THE DISCLOSUREA method is disclosed for preparing graft polymers ofalpha-substituted-beta-propiolactones, comprising thestep of providing anionic sites in an amorphous basepolymer and reacting the anionic compound with an alpha--substituted-beta-propiolactone.Critical concentrations of unsaturation in the basepolymer and critical quantities of the beta-propiolactoneconcerned are indicated.