FOAMABLE VINYL CHLORIDE COMPOSITION

PURPOSE:To obtain the title compsn. which gives a molding having a skin layer with an excellent surface hardness and a core with a fine and uniform cell structure and is excellent in long-run properties of a mold during molding by compounding a specific vinyl chloride resin, a specific processing ai...

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Bibliographische Detailangaben
Hauptverfasser:	ISHIMATSU HIROSHI, KAMISAKA TOSHIO
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING-UP
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain the title compsn. which gives a molding having a skin layer with an excellent surface hardness and a core with a fine and uniform cell structure and is excellent in long-run properties of a mold during molding by compounding a specific vinyl chloride resin, a specific processing aid, a specific blowing agent, CaCO3, and precipitated silica each in a specified amt. CONSTITUTION:The title compsn. comprises 100 pts.wt. vinyl chloride resin having an average degee of polymn. of 400-1000 (e.g. PVC), 2-25 pts.wt. polymethyl methacrylate processing aid (e.g. P-570, a product of Mitsubishi Rayon Co., Ltd.), 0.1-4 pts.wt. thermally decomposable blowing agent (e.g. azodicarbonamide and NaHCO3), 1-25 pts.wt. CaCO3, and 0.1-2 pts.wt. precipitated silica.