Cold flow additives for plastic-derived synthetic feedstock
AssigneeEcolab USA Inc.
InventorsTheodore C. Arnst, Karina Eureste, Tannon Shane Woodson
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Abstract
Disclosed are pour point depressants used in compositions and methods for achieving the cold flow properties of synthetic feedstock derived from plastic. A method of obtaining the synthetic feedstock is also disclosed, which includes heating plastic under substantially oxygen free conditions at a temperature of from about 400° C. to about 850° C. to produce a pyrolysis effluent, condensing the heated a pyrolysis effluent to obtain a synthetic feedstock, recovering the synthetic feedstock, and adding a pour point depressant to the synthetic feedstock to lower the pour point.
Claims12
A method of obtaining a synthetic feedstock, comprising:
- (a) heating plastic under substantially oxygen free conditions at a temperature of from about 400° C. to about 850° C. to produce a pyrolysis effluent;
- (b) condensing the heated pyrolysis effluent to obtain a synthetic feedstock;
- (c) recovering the synthetic feedstock;
- and
- (d) adding a pour point depressant to the synthetic feedstock to lower the pour point, wherein the pour point depressant comprises an ethylene vinyl acetate copolymer and an alpha olefin maleic anhydride polymer.
Dependencies are inferred from the claim text.