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. 02, 2013
Filed:
Apr. 16, 2010
Keisuke Kokin, Ibaraki, JP;
Seiichiro Murata, Ibaraki, JP;
Hideki Abe, Ibaraki, JP;
Yusuke Takahashi, Ibaraki, JP;
Keisuke Kokin, Ibaraki, JP;
Seiichiro Murata, Ibaraki, JP;
Hideki Abe, Ibaraki, JP;
Yusuke Takahashi, Ibaraki, JP;
Unimatec Co., Ltd., Tokyo, JP;
Abstract
A fluorine-containing polyether carboxylic acid amide represented by the general formula: CFO(CFO)RfCONHAr, wherein Rf is a fluorocarbon group having 1 to 2 carbon atoms, Ar is a nitrogen-containing heterocyclic group, n is an integer of 1 to 3, and m is an integer of 10 to 30, is produced by reacting a fluorine-containing polyether carboxylic acid fluoride represented by the general formula: CF(CFO)RfCOF, wherein Rf, n, and m are as defined above, with a nitrogen-containing heterocyclic amine compound represented by the general formula: ArNH, wherein Ar is as defined above; wherein the reaction is carried out while a reaction temperature is first increased to 80 to 100° C., and then increased at a temperature increase rate that produces a temperature difference of 3 to 5° C. after 48 hours.