Hindered phenolic antioxidant compositions
    35.
    发明申请
    Hindered phenolic antioxidant compositions 审中-公开
    受阻酚抗氧化剂组合物

    公开(公告)号:US20020142923A1

    公开(公告)日:2002-10-03

    申请号:US10092903

    申请日:2002-03-08

    发明人: Vincent J. Gatto

    摘要: Hindered tert-butylphenolic antioxidant compositions characterized by a low level of volatile and undesirable single-ring tert-butylphenolic antioxidants and a high level of non-volatile multi-ring (or methylene bridged) tert-butylphenolic antioxidants are obtained by reacting a specific mixture of ultra pure ortho-tert-butylphenol (OTBP), ultra pure 2,6-di-tert-butylphenol (DTBP) and formaldehyde in a solvent in the presence of catalyst. These antioxidants are further characterized by having a low level of 2,6-di-tert-butylphenol, low levels of ortho-tert-butylphenol, and trace levels of 2,4,6-tri-tert-butylphenol.

    摘要翻译: 受阻的叔丁基苯酚抗氧化剂组合物的特征在于低水平的挥发性和不期望的单环叔丁基苯酚抗氧化剂和高水平的非挥发性多环(或亚甲基桥接)叔丁基苯酚抗氧化剂,通过使 超纯正叔丁基苯酚(OTBP),超纯2,6-二叔丁基苯酚(DTBP)和甲醛在溶剂中在催化剂存在下进行。 这些抗氧化剂的特征还在于具有低水平的2,6-二叔丁基苯酚,低水平的邻 - 叔丁基苯酚和痕量的2,4,6-三叔丁基苯酚。