Ecolab USA Inc.

Dow Global Technolgoies LLC

Kameswara Vyakaranam

Ashish Dhawan

Ganesh Kailasam

Phillip S Athey

Rajat Duggal

William Aaron Koonce

Nathan Wilmot

Dwight D Latham

Juan Carlos Medina

Karina Eureste

Venkat S Minnikanti

Ling Zhang

Theodore C Arnst

Sara Arshad

Jan Van Bauwel

Disclosed are antioxidants used in compositions and methods to stabilize synthetic feedstock derived from plastic. Some methods disclosed herein include adding an antioxidant composition to a plastic-derived synthetic feedstock composition. Some methods disclosed herein include heating plastic under substantially oxygen free conditions at a temperature of from about 400° C. to about 800° C. to produce a pyrolysis effluent, distilling the pyrolysis effluent, recovering the synthetic feedstock, and adding a stabilizer to the synthetic feedstock to reduce contamination. The disclosure also provides compositions including a synthetic feedstock derived from plastic and an antioxidant.

Stabilizer additives for plastic-derived synthetic feedstock

Disclosed are antifouling agents used in compositions and methods to reduce or prevent foulants in synthetic feedstocks derived from plastic. A method of reducing or preventing fouling in a plastic-derived synthetic feedstock composition may include adding an antifouling agent including a carboxylic acid anhydride or a copolymer of a dicarboxylic acid anhydride and alpha olefin to a synthetic feedstock composition derived from plastic pyrolysis containing a foulant to provide treated pyrolysate. The foulant may include, for example, nylon, polyvinyl chlorides, polyethylene terephthalate, polyamides, caprolactam, benzoic acid, phenol, p-cresol, dimethylphenol, isopropyl phenol, tert-butylphenol, dimethylethylphenol, napthalenol, varying lengths of alkenes and alkanes, propylene, tolune, pentene, butane, tetramethylindole, ethylbenzene, ethyldimethylpyrrole, dimethylfuran, tetrahydroquinoline, and any combination thereof.

Antifouling agents for plastic-derived synthetic feedstocks

Growing community of inventors

Sugar Land, TX, United States of America

Kameswara Vyakaranam