Formulation of polymeric mixtures for the production of cross-linked expanded PVC foams and process for producing said foams

Formulation of polymeric mixtures for the production of cross-linked expanded PVC foams and process for producing said foams

A formulation of polymeric mixtures for the production of cross-linked expanded PVC foams, of the type comprising PVC, isocyanates, anhydrides and one or more nucleating agents, wherein the nucleating agents are composed of nucleating materials having a porosity of 1-100 nm, preferably 2-50 nm. With...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Nart, Fabiano, Bressan, Raffaela, Torgerssen, Ulf, Renon, Marco
Format: Patent
Sprache:eng
Schlagworte:
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
GENERAL PROCESSES OF COMPOUNDING
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Beschreibung
Zusammenfassung:A formulation of polymeric mixtures for the production of cross-linked expanded PVC foams, of the type comprising PVC, isocyanates, anhydrides and one or more nucleating agents, wherein the nucleating agents are composed of nucleating materials having a porosity of 1-100 nm, preferably 2-50 nm. With respect to known formulations for the production of cross-linked PVC foams, a formulation according to the invention offers the advantage of obtaining the desired degrees of stabilization, nucleation and expansion, even without the use of diazocompounds.