METHOD FOR INTRODUCING CARBONYL GROUPS INTO POLYMERS CONTAINING DOUBLE CARBON-CARBON LINKAGES

摘要

The invention discloses a method for selectively introducing carbonyl groups into polymers by oxygenation of double C=C bonds of polymers with the aid of nitrous oxide (N 2 O) at a temperature comprised between 50 and 350°C and a pressure of N 2 O of from 0.01 to 100 atmospheres. The introduction of an insignificant amount of C=O groups allows one to modify the physico-chemical properties of a polymer, with its molecular weight and molecular-weight distribution preserved. Deeper oxygenation results in controlled cleavage of polymer macromolecules and makes it possible to produce oxygen-containing oligomers having a desired molecular weight.