A NEW CLASS OF HIGH PERFORMANCE INDUSTRIAL ANTIOXIDANTS

Recognizing that polyolefins such as high density polyethylene (HDPE), linear low density polyethylene (LLDPE), low density polyethylene (LDPE), and polypropylene (PP) account for a large share of the total production and consumption of plastics and are used in diverse application areas (including automotive, aerospace, transport, building products, medical, and other sectors), Polnox products are especially geared toward meeting the performance requirements of finished products made from these resins.


The comparative performance of a Polnox Antioxidant and commercial AO-1 (CAS RN 6683-19-8) in polypropylene (PP) homopolymer is presented here using the ASTM D 5885 method (Oxidative Induction Time) under an oxygen pressure of 500 psi under isothermal conditions at 170°C.  Evaluated at equal concentrations, the performance of the Polnox antioxidant far surpasses that of the commercial product (improvement factor of almost ~4-5x).


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PLASTICS

polyolefins

applications

COMMERCIAL AO-1:

Pentaerythritol Tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate), CAS 6683-19-8


FORMULATION:

1000 ppm AO+1000 ppm CaSt+1000 ppm TRP, Extruded at 250 C, PP

Performance are compared by induction times in minutes under oxygen pressure 500 PSI at

170 ˚C, ASTM D 5885


Graph produced by Universal V4.7A TA Instruments

Evaluation of Polnox Antioxidant, Commercial AO-1 in Polyolefin (PP) using ASTM D5885 Method

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APPLICATIONS

SUB-SECTIONS

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PERFORMANCE TESTS