Preparation of 4,4'-dihydroxy-alpha-alkylstilbenes and
4,4'-dihydroxy-alpha, alpha'-dialkylstilbenes
    5.
    发明授权
    Preparation of 4,4'-dihydroxy-alpha-alkylstilbenes and 4,4'-dihydroxy-alpha, alpha'-dialkylstilbenes 失效
    制备4,4'-二羟基-α-烷基茋和4,4'-二羟基-α,α'-二烷基茋

    公开(公告)号:US5414150A

    公开(公告)日:1995-05-09

    申请号:US162517

    申请日:1993-12-03

    IPC分类号: C07C37/20 C07C39/215

    CPC分类号: C07C39/215 C07C37/20

    摘要: 4,4'-Dihydroxy-alpha-alkylstilbenes of high purity are prepared by reacting at a temperature of from about -20.degree. C. to about 20.degree. C. a mixture of (1) at least one alpha-haloketone, (2) at least one phenolic hydroxyl-containing compound or alkoxy-containing aromatic compound, and (3) at least one strong protonic acid or Lewis acid; such that the mole ratio of phenolic hydroxyl-containing compound or alkoxy-containing aromatic compound:alpha-haloketone(s) is from 0.1:1 to 1.9:1, and the mole ratio of phenolic hydroxyl-containing compound or alkoxy-containing aromatic compound:alpha-haloketone(s):strong protonic acid or Lewis acid is from about 0.1:1:0.0026 to about 1.9:1:0.95. The high purity 4,4'-dihydroxy-alpha-alkylstilbenes are useful for the advancement of epoxy resins, for the preparation of phenoxy resins and for the preparation of epoxy resins.

    摘要翻译: 通过在约-20℃至约20℃的温度下反应制备(1)至少一种α-卤代酮的混合物,(2)至少一种α-卤代酮, 至少一种含酚羟基的化合物或含烷氧基的芳族化合物,和(3)至少一种强质子酸或路易斯酸; 使得含酚羟基的化合物或含烷氧基的芳族化合物:α-卤代酮的摩尔比为0.1:1至1.9:1,并且含酚羟基的化合物或含烷氧基的芳族化合物的摩尔比 :α-卤代酮:强质子酸或路易斯酸为约0.1:1:0.0026至约1.9:1:0.95。 高纯度4,4'-二羟基-α-烷基芪可用于环氧树脂的前进,苯氧基树脂的制备和环氧树脂的制备。