ChemInform Abstract: AN OXIDATION PRODUCT OF OCTADECYL 3‐(3,5‐DI‐TERT‐BUTYL‐4‐HYDROXYPHENYL)PROPIONATE (IRGANOX 1076)

Bartelink, H. J. M.; Beulen, J.; Bielders, G.; Cremers, L.; Duynstee, E. F. J.; Konijnenberg, E.

doi:10.1002/chin.197847133

Cited by 2 publications

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“…The broad structureless peak has been observed previously in the extract of polypropylene pellets by ultrasonication in chloroform and also in polypropylene that had undergone gamma ray or pulse electron irradiation [6]. The transformation products of Irganox 1010 and other similar sterically-hindered phenolic antioxidants have been identified by a number of investigators [7][8][9][10][11] as 2,6-di-tertbutyl-p-benzoquinone (2,6-DTB-PBQ) and stilbenequinone which are olefinic ketones that usually display absorption around 220-250 nm and 290-330 nm [4]. Figure 8 shows the generalized radical-scavenging mechanism for typical hindered-phenol type of antioxidants [12].…”

Section: Resultsmentioning

confidence: 87%

Effect of Alteration of Antioxidant by UV Treatment on the Dielectric Strength of BOPP Capacitor Film

Ramprasad

Boggs

2007

IEEE Trans. Dielect. Electr. Insul.

114

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The effect of altered products of the antioxidant by UV irradiation on dielectric breakdown strength of metallized biaxially-oriented polypropylene (BOPP) capacitor film was studied. Results from Weibull statistical analysis show that an optimal UV exposure level of ~3.4 J/cm 2 (200-400 nm) increases the breakdown strength at 5% probability by ~20%. As indicated by UV spectroscopic analysis, the antioxidant in BOPP was consumed almost entirely to form 2,6-di-tert-butyl-p-benzoquinone (2,6-DTB-PBQ). Density functional theory computations indicate that this compound is electronegative, which probably accounts for the increased dielectric strength.Index Terms -metallized film capacitor, irradiation, antioxidant, breakdown.

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Section: Resultsmentioning

confidence: 87%

Effect of Alteration of Antioxidant by UV Treatment on the Dielectric Strength of BOPP Capacitor Film

Ramprasad

Boggs

2007

IEEE Trans. Dielect. Electr. Insul.

114

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“…15). 26,27 The quinone methides scavenge carbon-centered free radicals, 28 and their aromatization can subsequently regenerate the phenolic function. 26 The FTIR transmission and ATR study revealed that the development of carbonyls was much higher on the surface than in the bulk for all the film-blown materials before aging.…”

mentioning

confidence: 99%

Process efficiency and long‐term performance of α‐tocopherol in film‐blown linear low‐density polyethylene

Strandberg¹,

Albertsson²

2005

J of Applied Polymer Sci

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␣-Tocopherol was compared with a commercial phenolic antioxidant (Irganox 1076) as a long-term and process antioxidant in film-blown and compression-molded linear low-density polyethylene. The antioxidant function of ␣-tocopherol was high in the film-blown material, especially in the processing, according to oxygen induction time measurements with differential scanning calorimetry. The residual content of ␣-tocopherol after processing, determined with chromatographic techniques, was less than that of the commercial phenolic antioxidant in both the film-blown and compression-molded materials. The process stabilizing efficiency was nevertheless higher for the material containing ␣-tocopherol. During the long-term stabilization, the efficiency of ␣-tocopherol was less than that of the commercial phenolic stabilizer Irganox 1076 in the thin films, according to chemiluminescence and infrared measurements. The long-term efficiency in the compression-molded samples stabilized with ␣-tocopherol or Irganox 1076 was equally good because of the low loss of both ␣-tocopherol and Irganox 1076 from the thicker films.

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ChemInform Abstract: AN OXIDATION PRODUCT OF OCTADECYL 3‐(3,5‐DI‐TERT‐BUTYL‐4‐HYDROXYPHENYL)PROPIONATE (IRGANOX 1076)

Abstract: Das Di‐tert.‐butylphenol‐Derivat (I) wird durch Kaliumhexacyanoferrat zu dem Dimeren (II) oxidiert.

Cited by 2 publications

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Effect of Alteration of Antioxidant by UV Treatment on the Dielectric Strength of BOPP Capacitor Film

Effect of Alteration of Antioxidant by UV Treatment on the Dielectric Strength of BOPP Capacitor Film

Process efficiency and long‐term performance of α‐tocopherol in film‐blown linear low‐density polyethylene

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