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    • 41. 发明授权
    • Phenol resin composition and method of producing phenol resin
    • 苯酚树脂组合物和酚醛树脂的制备方法
    • US5952447A
    • 1999-09-14
    • US74404
    • 1998-05-08
    • Takashi Ikeda
    • Takashi Ikeda
    • C08G14/10C08L61/06C08L61/28C08L61/34
    • C08L61/34C08G14/10C08L61/06C08L61/28
    • Disclosed is a phenol resin composition containing a specific triazines-modified novolak phenol resin comprising phenols, triazines and aldehydes, and a method for producing the triazines-modified novolak phenol resin comprising the steps of as a first step reaction, successively effecting processes (i), (ii) and (iii), wherein said process (i) is a process for adjusting a pH of a system of a mixture of phenols, triazines and aldehydes in a range of 5 to 10, said process (ii) is a process for reacting said mixture under the condition that the aldehydes are not volatilized and said process (iii) is a process for removing a reaction water in the system; then as a second step reaction, successively effecting said processes (ii) and (iii) at a higher temperature than that of the first step reaction; thereafter as a third step reaction, successively effecting said processes (ii) and (iii) at a higher temperature than that of the second step reaction; and further, depending upon a necessity, repeating the second step reaction and the third step reaction, whereby a dimethylene ether bond in the molecule is converted to a methylene bond.
    • 公开了含有酚类,三嗪类和醛类的特定三嗪改性酚醛清漆酚醛树脂的酚醛树脂组合物及其制备方法,该方法包括以下步骤:作为第一步反应,依次进行方法(i) ,(ii)和(iii),其中所述方法(i)是调节5至10范围内酚,三嗪和醛的混合物体系的pH的方法,所述方法(ii)是一种方法 用于在醛不挥发的条件下使所述混合物反应,并且所述方法(iii)是除去体系中的反应水的方法; 然后作为第二步反应,在比第一步反应的温度更高的温度下依次进行所述方法(ii)和(iii) 此后作为第三步反应,在比第二步反应更高的温度下依次进行所述方法(ii)和(iii); 此外,根据需要,重复第二步反应和第三步反应,由此将分子中的二亚甲基醚键转化为亚甲基键。