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.)
Rhone Poulenc SA
Original Assignee
Rhone Poulenc SA
Societe des Usines Chimiques Rhone Poulenc SA
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Filing date
Publication date
Application filed by Rhone Poulenc SA, Societe des Usines Chimiques Rhone Poulenc SAfiledCriticalRhone Poulenc SA
Publication of ES202371A1publicationCriticalpatent/ES202371A1/en
Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications
(AREA)
Abstract
Process for the treatment of polymeric materials, characterized in that the polyacrylonitrile or its copolymers are mixed, in solution with substantial quantities of primary, secondary or tertiary aliphatic mono or diamines, which have at least ten carbon atoms in their molecule, in the presence of mineral substances of acid nature. (Machine-translation by Google Translate, not legally binding)
ES0202371A1951-03-121952-03-08Procedure for the treatment of polymery matters (Machine-translation by Google Translate, not legally binding)
ExpiredES202371A1
(en)
Procedure for the preparation of N- (2-amino-3,5-dibromobenciliden) -trans-4-amino-ciclohexanol. (Machine-translation by Google Translate, not legally binding)
Procedure for treatment of polyacrilonitril and its copolymer, to allow its dyeing by acid dyes (Machine-translation by Google Translate, not legally binding)
Procedure for treatment of polyacrilonitril and its copolymer, to allow its dyeing by acid dyes (Machine-translation by Google Translate, not legally binding)
Procedure for the obtaining of 4-4'-dioxy-difenil-2-2-pyridil-methane, as well as their derivatives, such as etheries and esters (Machine-translation by Google Translate, not legally binding)
A procedure to separate the active substances in vitamin b12 from the impurities that accompany them (Machine-translation by Google Translate, not legally binding)