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:
Feb. 21, 1984
Filed:
Mar. 01, 1982
Applicant:
Inventor:
Kazuhisa Hiratani, Ibaragi, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
546178 ; 423-2 ; 423-6 ; 423 24 ;
Abstract
A novel polyether having the following general formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 each stand for hydrogen, an alkyl group having 1 to 20 carbon atoms or an alkenyl group having 1 to 20 carbon atoms with the exception that R.sub.1, R.sub.2 and R.sub.3 cannot stand for hydrogen at the same time, and m and n each represent an integer of 1 to 9. The polyether can capture cations when contacted with a cation-containing aqueous alkaline liquid and can release the cations to an aqueous acidic liquid, and thus serves as a cation carrier.