Antioxidantien und Stabilisatoren XXVIII. Gelchromatographie nichtflüchtiger phenolischer antioxidantien zur stabilisierung von polymeren |
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| Authors: | Von Ji&#x;í oupek Jaroslav Kahovec Miroslava K&#x;ivkov Jan Pospí&#x;il |
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| Affiliation: | Von Jiří Čoupek,Jaroslav Kahovec,Miroslava Křiváková,Jan Pospíšil |
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| Abstract: | High resolution gel chromatography was applied to the analysis of phenolic antioxidants mixtures formed by an alkylation of 4,4'-isopropylidenebisphenol and used for the stabilisation of polyolefins and rubbers. The calibration by pure model substances provided values of relative zone rates on S-GEL-832 for a series of tert-butyl and tert-octyl derivatives of phenol and 4,4'-isopropylidenebisphenol. The chromatograms show in some cases a separation of isomers differing in size of their molecules in solution. |
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