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:
Aug. 07, 1984
Filed:
May. 13, 1983
William M King, Los Alametos, CA (US);
William W Wight, Alta Loma, CA (US);
Exxon Research & Engineering Co., Florham Park, NJ (US);
Abstract
In fabricating a reverse osmosis spiral wound apparatus for the separation of organic fluid mixtures, especially for the separation of dewaxing solvents containing ketone from dewaxed oil by permeation through a permeable membrane such as pretreated regenerated cellulose or asymmetric polyimide a special epoxy adhesive formulation is used to form the membrane element edge seals which serve to define separate permeate zones and feed stream zones. This special adhesive formulation is characterized by having a relatively long pot life, (i.e. will not set too quickly) permitting it to be easily handled during application to the membrane edges in the course of element fabrication, as well as being flexible (trimable) and of proper viscosity.