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:
Jun. 14, 1983
Filed:
May. 05, 1982
Howard B Irvin, Bartlesville, OK (US);
Phillips Petroleum Company, Bartlesville, OK (US);
Abstract
A rubber from a solution polymerization process dissolved in a lower boiling cycloaliphatic hydrocarbon is contacted countercurrently in column means with hot higher boiling aromatic hydrocarbon vapor. The lower boiling cycloaliphatic solvent is stripped out overhead and displaced by the higher boiling aromatic which condenses to form a rubber-in-aromatic solvent solution. The rubbery copolymer-in-aromatic solvent can be readily blended with a poly(arylene oxide) solution in aromatic solvent. The resulting rubber/poly(arylene oxide) blend in the higher boiling aromatic solvent can be readily steam-stripped to form a rubber/poly(arylene oxide) polymer mixture crumb. Optionally, the co-mixed polymers in the higher boiling aromatic solvent are flash concentrated prior to steam-stripping.