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:
Mar. 04, 1980
Filed:
Jul. 11, 1978
Pierre Gloriod, Lillebonne, FR;
Abstract
A process for eliminating low molecular-weight polymers from the recirculating gases of facilities carrying out ethylene polymerization or copolymerization at a pressure of 300 to 2500 bars and a temperature of 130.degree. C. to 350.degree. C., in which facilities the mixture of monomer and polymer leaving the reactor is expanded into a separator operating under a pressure of 50 to 500 bars. The gases are passed, at a temperature at least 20.degree. C. higher than the melting point of the low molecular-weight polymers, through at least one standard cyclone at an inlet velocity between 1 and 10 m/s. The gases are then cooled to a temperature lower than the melting point of the low molecular-weight polymers, and are then passed through at least one heated cyclone at an inlet velocity between 2 and 20 m/s.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile