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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BASF SE
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BASF SE
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Application filed by BASF SEfiledCriticalBASF SE
Priority to ES433676ApriorityCriticalpatent/ES433676A3/en
Publication of ES433676A3publicationCriticalpatent/ES433676A3/en
Process for obtaining liquid sizing agents, resistant to storage, for cellulosic textiles, characterized in that the reaction mixture, obtainable by the reaction of urea or methylolated urea or polycondensation products of urea and formaldehyde, soluble in water with formaldehyde, in a total molar ratio of urea to formaldehyde from 1: 3 to 10, in an aqueous solution, with ph values between 0 and 3, is adjusted to a ph between 6 and 10 and, at temperatures between 20 and 80º c, so much urea is added that a total molar ratio of urea to formaldehyde of 1 is present; 1.5 to 2.5. (Machine-translation by Google Translate, not legally binding)
ES433676A1975-01-091975-01-09Procedure for the obtaining of liquid arrangement agents. (Machine-translation by Google Translate, not legally binding)
ExpiredES433676A3
(en)
Procedure for performing the reaction of cellulose, in fibers or otherwise, with formaldehyde (Machine-translation by Google Translate, not legally binding)