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Procedimiento de preparación mediante molido criogénico de mezclas de poliésteres aromáticos con control del grado de transesterificación

Authors: Ezquerra, Tiberio A.; Denchev, Zlatan; Sics, Igors; Nogales, Aurora;

Procedimiento de preparación mediante molido criogénico de mezclas de poliésteres aromáticos con control del grado de transesterificación

Abstract

Procedimiento de preparación mediante molido criogénico de mezclas de poliésteres aromáticos con control del grado de transesterificación. Se presenta un procedimiento para la preparación de mezclas de polímeros de policondensación como: poliésteres, poliamidas, policarbonatos, poliuretanos, poliimidas, polietercetonas y polímeros similares que son capaces de desarrollar reacciones de intercambio tendentes a formar copolímeros mediante transesterificación, transamidación, intercambio ester-amida u otro tipo de reacción de intercambio. El procedimiento permite la obtención de mezclas con un grado controlado de transesterificación, o de la reacción de intercambio relacionada, y consiste en: 1) Premezcla de los granulados iniciales de los polímeros de interés. 2) Molido criogénico de la premezcla. 3) Termomoldeo a presión en un molde deseado del polvo obtenido por molido criogénico y ulterior enfriamiento rápido para obtener un material amorfo.

Referencia OEPM: P200002257.-- Fecha de solicitud: 15/09/2000.-- Titular: Consejo Superior de Investigaciones Científicas (CSIC).

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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