87-97-8Relevant articles and documents
Bifunctional compound and synthesis method thereof, and applications of bifunctional compound as antioxidant
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Page/Page column 10-16, (2020/02/14)
The invention discloses a bifunctional compound and a synthesis method thereof, and applications of the bifunctional compound as an antioxidant, wherein the bifunctional compound comprises a hinderedphenol unit, a phosphite unit, a trimethylbenzene unit and a straight-chain segment unit. According to the invention, the synergistic effect of the hindered phenol unit and the phosphite unit and thecontent of the effective functional groups in unit mass are adjusted by controlling the length of the straight-chain segment unit, and the trimethylbenzene structure is beneficial to preventing the antioxidant compound from being precipitated out of the polymer; and the compound can be used as an antioxidant of polypropylene or polyethylene.
Novel method for synthesizing antioxidant 330 by catalyst
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Page/Page column 8-11; 17, (2018/09/28)
The invention aims at providing a method for synthesizing an antioxidant 330. Manganese dioxide-titanium dioxide-molecular sieve loaded phosphoric acid and ferroferric oxide-molecular sieve loaded phosphoric acid catalysts are prepared; under the existence of manganese dioxide-titanium dioxide-molecular sieve loaded phosphoric acid catalysts, 2,6-butylated hydroxytoluene and methyl alcohol are used as preparation raw materials to synthesize 3,5-di-tert-4-hydroxybenzyl ether; the methyl alcohol is used as preparation raw materials to synthesize 3,5-di-tert-4-hydroxybenzyl ether; next, under theexistence of the iron oxide-molecular sieve loaded phosphoric acid catalysts, the 3,5-di-tert-4-hydroxybenzyl ether and mesitylene react to obtain the antioxidant 330. The yield of the synthesized antioxidant is high; the purity is high.
Synthesis and oxidizing ability of p-chloranil dimer
Hayashi, Naoto,Nakagawa, Hiroyuki,Sugiyama, Yuko,Yoshino, Junro,Higuchi, Hiroyuki
, p. 398 - 400 (2013/05/21)
A p-chloranil dimer ( pCh2) has been synthesized. The first reduction potential of pCh2 shifted to a more positive value than that observed for the p-chloranil monomer ( pCh1) and was more negative than that for 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ). As expected, pCh2 oxidized 9,10-dihydroanthracene and α-tetralol to give anthracene and α-tetralone, respectively, more efficiently than pCh1 did. The advantages of pCh2 were observed in oxidations of 2,4-di-tert-butylphenol and 2,6-di-tertbutyl- 4-methylphenol. Although further oxidation took place in DDQ oxidations and no reaction occurred in pCh1 oxidations, initial oxidation products were solely obtained in pCh2 oxidation because of its moderate oxidizing ability.