ES326142A3 - Procedure to obtain a concentrated aqueous solution of an alkaline thioanate. (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure to obtain a concentrated aqueous solution of an alkaline thioanate. (Machine-translation by Google Translate, not legally binding)
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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by American Cyanamid CofiledCriticalAmerican Cyanamid Co
Priority to ES0326142ApriorityCriticalpatent/ES326142A3/en
Publication of ES326142A3publicationCriticalpatent/ES326142A3/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Artificial Filaments
(AREA)
Paper
(AREA)
Abstract
Process for obtaining a concentrated aqueous solution of an alkaline thiocyanate starting from a diluted solution containing from about 2% to about 10% by weight of said thiocyanate and having a pH lower than 7.0, being also a by-product from the manufacture of synthetic fibers, whose process comprises the operations of: adding to said solution as the only chemical additive, a substance that is alkaline in said aqueous solution, in an amount that is sufficient to increase the pH of said aqueous solution to 7.5 at least; filtering the solution that already has a pH of at least 7.5 to separate the solid matter in suspension; and concentrating the filtered solution by evaporation obtaining an aqueous solution with a concentration of said alkali metal thiocyanate, which can dissolve an acrylonitrile polymer. (Machine-translation by Google Translate, not legally binding)
ES0326142A1966-04-291966-04-29Procedure to obtain a concentrated aqueous solution of an alkaline thioanate. (Machine-translation by Google Translate, not legally binding)
ExpiredES326142A3
(en)