Production and recovery of a solid mixed homo- and copolymer
Abstract
Abstract A SOLID MIXED HOMO- AND COPOLYMER PRODUCT IS PRODUCED BY A COMINATION OF A CATALYZED MASS HOMOAND A CATALYZED MASS COPOLYMERIZATION AND THE SOLID RECOVERED AND WASHED WITH AN IMPURE FRACTION OF THE MONOMERS SO REACTED, THE FRACTION BEING OBTAINED BY A FRACTINATION OF UNREACTED EXCESS MONOMERS TO PRODUCE A STREAM CONTAINING CATALYST AND ANY SOLUBLE POLYMER, A STREAM CONTAINING A MIXTURE OF THE MONOMERS, USING A PORTION OF THE STREAM OF MONOMERS AS SAID IMPURE FRACTION, FRACTIONATING ANOTHER PORTION THEREOF TO OBTAIN ONE OF THE MONOMERS FOR THE HOMOPOLYMERIZATION AND A MIXTURE OF THE MONOMERS FOR SAID COPOLYMERIZATION. IN AN EMBODIMENT A MIXED POLYPROPYLENE-PROPYLENE-ETHYLENE COPOLYMER IS PRODUCED AND RECOVERED AND WASHED WITH A STREAM CONTAINING PROPYLENE AND ETHYLENE, THERE BEING RECOVERED ALSO A STREAM OF PROPYLENE SUBSTANTIALLY FREE FROM ETHYLENE FOR USE IN SAID HOMOPOLYMERIZATION AND A STREAM CONTAINING PROPYLENE AND ETHYLENE FOR USE IN SAID COPOLYMERIZATION.
Inventors
- 👤 Jack S Scoggin
Bibliographic Details
Claims Analysis
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