Antioxidant MDXX

Ao1520

Antioxidant MDXX (II, IV-bis (n-octylthiomethylene) -6-methylphenol) est novum genus antioxidant, eius phenoly hydroperoxides, cum intramolecular synergistica potest, potest esse ut Polymers, vegetabilis olea, potest esse ut Polymers, vegetabilis olea, potest esse quod Polymers, in Pre Oxygeni, calor, lux vel summus industria radialis damnum ad organicum materia. In particular, Antioxidant 1520 can be used to resist oxidative aging during storage of various elastomer raw materials, to prevent gel formation in butadiene rubber, to prevent oxidative coloring in rigid styrene polymers, to improve the stability of storage and processing at high temperatures in styrene butadiene rubber, to prevent aging under processing conditions in isoprene styrene block copolymers, to prevent Gel formatio in elastomers et privata mixturis color mutatio durante repono et translationem.

Applicatio

Antioxidant MDXX est novum altum M. pondus liquidum antioxidant, maxime in Butadiene Flexilis, styrene Butadiene rubber, ethylene propylene Flexilis, Nitrile, quod dosage est parva, et antioxidant, aut synthetica in stabilitatem et in stabilitatem et syntheticum, potest amplio stabilitatem de plastics et synthetica. Est antioxidant, quod realizes transformationem de Flexilis products ex universae viridis.

Synthesis modum

In praesenti, in synthesis modum Antioxidant MDXX est maxime Mannich alkali modum, id est, o-methylphenol, n-octynmermermptan, formaldehyde vel paraformaldehyde ab Mannich reaction.

Et super synthesis modum includit duo processus itineribus in ipsa operatio, unum est o-methylphenol et nimia polyformehde, Dimethylamine primo reactionem ad parare manniformidant II-methyl-IV, VI, et agere cum Mertan, Dimethylamine et Purificationi et Purificationi Mode, notum ut duo-gradus modus. Typical literatures include US3832328, EP428973A1, US5116894, etc. The reaction process of this method is relatively complicated, and it needs to use a lot of dimethylamine, the preparation and purification process of the intermediate also needs more time, and the yield is relatively low, which is not suitable for industrial production.

An optimized synthesis modum Antioxidant MDXX consistit de his gradibus:

I) o-creesol, n Octylmercaptan, formaldehyde, Diethanolamine et solvendo addita ad reactor, et acidum additum est ad adjust ad 1-5 ad refluxum reactionem;

II) Refrigerant et stans ad stratify, fluxum fluxum aquae inferiorum aquae phase ab inferioribus exitum de reactor, deinde adiungere Iodhimehimehimead et cui et reheat ad reactionem;

III), refrigescant, filter removere insolubilis materia, addere oportet moles formic acid et reheat ad 30-60 ℃, turbantes;

IV) Post baptismata aqua, vacuo distillation, siccatio, paratus.

Qingdao yihoo polymer technology co. Ltd. Committitur ad productionem et copia varietate efficiens additives in plastics et coatings. Product types opercula Antioxidants, lux stabilizers, UV absorbers, flamma retardants, etc et products et meruit plus quam C mare customers fiducia.

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