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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Montedison SpA
Original Assignee
Montedison SpA
Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA
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Filing date
Publication date
Application filed by Montedison SpA, Montecatini Societa Generale per lIndustria Mineraria e Chimica SpAfiledCriticalMontedison SpA
Publication of ES239623A1publicationCriticalpatent/ES239623A1/es
Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications
(AREA)
Abstract
Método de purificar un polímero sólido de propileno contaminado con un disolvente hidrocarburado y con hasta 1% en peso, basado en el peso del polímero, de un catalizador preparado a partir de un compuesto organo metálico de un metal del grupo I, II, o III de la Tabla Periódica de Mendeleeff y un compuesto sólido de un metal del grupo IVa, Va, o Via de dicha Tabla , en cuyo compuesto sólido al metal tiene una valencia inferior a su valencia máxima, caracterizado porque comprende el liberar el polímero del disolvente por destilación al vapor y el lixiviarlo subsiguientemente en una o más fases operativas con amoniaco acuoso débil.
ES0239623A1958-01-101958-01-09Método para la purificacion
ExpiredES239623A1
(es)