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:
Jul. 08, 1997
Filed:
Jun. 14, 1995
Korea Research Institute of Chemical Technology, Daejeon, KR;
Abstract
An ionomer for an ion complex membrane useful for the separation of water-organic solvent by osmosis or low pressure osmosis as well as by pervaporation and a method for producing ion complex membrane therefrom are disclosed. The ionomer for producing ion complex membrane can be prepared by heat polymerization of an alkyl compound having pyridyl groups such as 1,3-di(4-pyridyl) propane at both terminal ends with a dihaloalkane compound such as dibromooctane and dichloroheptane having two halogen atoms at both terminal ends or with one or two halogen atoms affixed to intermediate carbon atoms in a polar solvent such as acrylonitrile. An ion complex membrane can be produced by preparing a membrane of a polycation or polyanion in a solution casting method and dipping the membrane in a solution of polycation or polyanion for 24 hours to give an ion complex membrane. This ion complex membrane may be a single membrane or composite membrane. Composite membrane includes a plain membrane and a hollow fiber membrane. The ion complex membrane according to the present invention is useful for the separation of water-organic solvents.