The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 12, 1976
Filed:
Aug. 20, 1974
Charles W Albright, South Charleston, WV (US);
George E Keller, II, South Charleston, WV (US);
Union Carbide Corporation, New York, NY (US);
Abstract
A process for cracking thermoplastic polymers to valuable products, primarily their monomers, comprising the following steps: A. converting the polymer into a liquid or fluidized stage; B. introducing the polymer from step (a) in droplet or particulate form into a reaction zone and admixing said polymer with a hot inert gas or mixture of hot inert gases in the reaction zone Wherein the weight ratio of gas to polymer is about 1 to about 8 parts of gas per part of polymer; the temperature of the gas is such as to heat the polymer to a temperature in the range of about 800.degree.C. to about 1050.degree.C.; and the residence time in the reaction zone is about 10 to about 100 milliseconds; and C. quenching the recovering product.