Stabilized polyisoprene composition

A stabilized polyisoprene composition comprising 100 parts by weight of polyisoprene and 0.15-3.0 parts by weight of a binary system antioxidant consisting of 50-99% by weight of a phosphite type antioxidant represented by the formula, wherein R1, R2, and R3 are same or different aryl groups, and 50...

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Bibliographische Detailangaben
Hauptverfasser:	ITO, TADAHIKO, HARADA, HIROSHI, ARAO, TOSHIO, SATOH, NOBUO
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:	A stabilized polyisoprene composition comprising 100 parts by weight of polyisoprene and 0.15-3.0 parts by weight of a binary system antioxidant consisting of 50-99% by weight of a phosphite type antioxidant represented by the formula, wherein R1, R2, and R3 are same or different aryl groups, and 50-1% by weight of a triazine derivative type antioxidant represented by the formula, wherein X1, X2, and X3, which may be the same or different, are selected from the group consisting of -NH-, -O-, and -S-, and R', R'', and R''', which may be the same or different, represent alkyl, or alkyl-substituted or unsubstituted hydroxyphenyl groups. This binary system antioxidant exhibits a synergistic effect on the stabilization of polyisoprene against heat and oxygen.