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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Rhone Poulenc Industries SA
Original Assignee
Rhone Poulenc Industries SA
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Filing date
Publication date
Priority claimed from FR7436705Aexternal-prioritypatent/FR2290460A1/en
Application filed by Rhone Poulenc Industries SAfiledCriticalRhone Poulenc Industries SA
Publication of ES442352A1publicationCriticalpatent/ES442352A1/en
Process for preparing water-soluble polyurethanes, characterized in that a sulfonated anionic polyester with a molecular mass of between 500 and 3,000, whose acid number is less than 20 mg KOH/g and containing 0.8 to 2% by weight of sulfur, is reacted with at least one diisocyanate, at a temperature between 130 and 230ºC, the NCO/OH + COOH molar ratio being less than 1. (Machine-translation by Google Translate, not legally binding)
ES442352A1974-11-051975-11-05Procedure for preparing hydrosoluble polyurethanes. (Machine-translation by Google Translate, not legally binding)
ExpiredES442352A1
(en)
Procedure for preparation of a polyesteruretan-urea substantially linear and segmented copolymer. (Machine-translation by Google Translate, not legally binding)