C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
C08K 5/3492 (2006.01) C08L 23/02 (2006.01)
Patent
CA 2091463
2091463 9204406 PCTABS00011 An oxo-piperazinyl triazine with three piperazinone substituents, each of which has an alkylated N4 atom (''MPIP-T''), used in an amount no more than 0.2 phr, and without any secondary stabilizer (hence referred to as a ''virgin MPIP-T''), and in particular, without any hindered phenol antioxidant, or phosphorous acid ester, simultaneously provides thermooxidative stability and stability against degradation by UV light along with acceptable melt processability. Further, the virgin MPIP-T allows (i) uninterrupted operation of a die or mold while maintaining the surfaces of the cavities essentially contaminant-free; and, (ii) excellent AO stabilization which is equivalent to that obtained with a premier hindered phenol AO, and superior to that obtained with the premier oligomeric piperidinyl-triazine compound, when each stabilizer is used in the same amounts by weight in a thermoplastic synthetic resinous substrate.
Kletecka George
Lai John T.
Son Pyong N.
B.f. Goodrich Company (the)
Kletecka George
Lai John T.
Son Pyong N.
Swabey Ogilvy Renault
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