Conversion of plastics
AssigneeMobil Oil Corporation
InventorMargaret M. Wu
Life of this patent
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Abstract
A process for converting solid plastic materials, preferably waste materials, into usable lower molecular weight hydrocarbonaceous materials by reacting such plastic materials at elevated temperatures in effective contact with an acidic catalyst comprising at least one zeolite having acid activity.
Claims20
A process for converting a polyolefin, said polyolefin having been made by catalytic polymerization of at least one alpha olefin with a catalyst comprising a zeolite which zeolite remains with the polymerization product, to lower molecular weight products, comprising normally fluid hydrocarbons, which comprises:
- contacting such polyolefin with at least one acidic catalyst, comprising a zeolite provided at least in part by said polymerization catalyst, at a pressure and at an elevated temperature sufficient to convert said polyolefin to a fluid state and for a time sufficient to effect a catalytic cracking of said fluid state polyolefin;
- and recovering therefrom a product comprising normally fluid hydrocarbons.
A process for converting a polymer having been made by catalytic polymerization with a catalyst comprising a zeolite which zeolite remains with the polymerization product, to lower molecular weight products, comprising normally fluid hydrocarbons, which comprises:
- contacting such polymer with at least one acidic catalyst, comprising a zeolite provided at least in part by said polymerization catalyst, at a pressure and at an elevated temperature sufficient to convert said polymer to a fluid state and for a time sufficient o effect catalytic cracking of aid fluid state polymer;
- and recovering therefrom a product comprising normally fluid hydrocarbons.
Dependencies are inferred from the claim text.