RADIATION-RESISTANT POLYOLEFIN COMPOSITION

PURPOSE:To obtain a radioactive ray-resistant polyolefin composition which can inhibit deterioration in physical properties, discoloration and additive bleed- out caused by radioactive rays by adding a fluorine-containing phosphite compound and a hindered amine to a polyolefin. CONSTITUTION:(A) 100...

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Hauptverfasser:	HONDO AKIRA, MATSUMURA TORU
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain a radioactive ray-resistant polyolefin composition which can inhibit deterioration in physical properties, discoloration and additive bleed- out caused by radioactive rays by adding a fluorine-containing phosphite compound and a hindered amine to a polyolefin. CONSTITUTION:(A) 100 pts. wt. of polyolefin, preferably polyethylene or polyproylene is mixed with (B) 0.01 to 0.2 pt. wt., preferably 0.05 to 0.1 pt. wt. of a fluorine-containing phosphite compound such as 2,2'-ethylidene-bis-(4,6-di- t-butylphenyl) fluorophosphite and (C) 0.01 to 1 pt. wt., preferably 0.03 to 0.5 pts. wt. of a hindered amine, preferably in addition, (D) 0.01 to 0.1 pt. wt. of a metal soap or (E) hydrotalcite, or 0.01 to 0.2 pt. wt. of D + E in combination.