Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
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Filing date
Publication date
Application filed by American Cyanamid CofiledCriticalAmerican Cyanamid Co
Publication of ES331877A1publicationCriticalpatent/ES331877A1/en
Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications
(AREA)
Abstract
Process for treating a synthetic acrylonitrile fiber, characterized in that it comprises preparing a solution of an acrylonitrile polymer comprising at least 80 weight percent acrylonitrile together with dissociable acid groups within the polymer in an aqueous solution of thiocyanic acid salt , extrude the solution into a fiber, treat the fiber with an aqueous solution of the inorganic alkali metal salt or ammonium salt at pH 2.2 to pH 4.0 so that it is combined from 75 to 95 percent of said acid groups dissociable with the alkali metal or ammonium ions and, finally, washing the fiber thus treated with water. (Machine-translation by Google Translate, not legally binding)
ES331877A1965-10-051966-10-04Procedure for treating a synthetic fiber of acrylonitril. (Machine-translation by Google Translate, not legally binding)
ExpiredES331877A1
(en)
Procedure for performing the reaction of cellulose, in fibers or otherwise, with formaldehyde (Machine-translation by Google Translate, not legally binding)
A procedure for the production of insoluble azocolorants in water on textile material of cellulose fibers or proteinic fibers (Machine-translation by Google Translate, not legally binding)