AN ENVIRONMENT FRIENDLY METHOD FOR DISPOSAL OF WASTE PLASTICS THROUGH CONVERSION OF POLYETHYLENE TEREPHTHALATE (PET) POLYMERS TO ANTI-STRIPPING COMPOUNDS

摘要

A method for conversion of polyethylene terephthalate (PET) polymers to anti-stripping compounds for bitumen through a green chemistry approach is disclosed. The present invention also provides a method for safe and environment friendly large scale disposal of used PET polymer. The PET polymer is either recycled or virgin and is used as synthon. It is reacted with a polyamine, preferably tetraethylene pentamine in xylene solution, when the polyamine undergoes aminolysis reaction with PET without any catalyst and at a relatively low temperature in the range of 110 °C to 160 ° C. The process achieves the maximum conversion efficiency of 100% into diamino diamido mixture of compounds and produces no effluent. A method for producing a bituminous concrete having high anti-stripping properties is also disclosed.