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. 04, 1987
Filed:
Jan. 21, 1986
Daniel J Vaughan, Wilmington, DE (US);
Other;
Abstract
An electrolytic purification process useful for contaminated solutions of oxygen-sensitive organic dyes and other such sensitive organic materials and metal chelates and complexes of organic materials involves applying an electrical potential to said solutions in an intermediate or feed compartment separated by cation permeable membranes from an anolyte compartment having an anode and an acidic aqueous anolyte and from a catholyte compartment having a cathode and an aqueous catholyte whereby the impressed electrical current causes metal cations to be electrotransported through the cation permeable membrane into the catholyte and the solution of oxygen- or hydrogen-sensitive organic material is purified without exposure to the anode or oxygen formed at the anode or to the cathode or hydrogen formed in the catholyte compartment. A special embodiment comprises treating solutions of oxygen- or hydrogen-sensitive organic materials first with a salt of a multivalent metal cation to insolubilize such organic materials, separating the insolubilized organic material from unwanted substances such as large volumes of water found in dilute solutions of the desired organic material or other substances encountered in the solutions, dissolving the separated insolubilized organic material in an acidic aqueous solution and removing the multivalent metal cations by electrotransport thereof through a cation permeable membrane into a catholyte as described in the above described electrolytic purification process.