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    • 2. 发明授权
    • Phenolic resin composition
    • 酚醛树脂组合物
    • US5525684A
    • 1996-06-11
    • US376146
    • 1995-01-20
    • Tomoyuki KawabataShigeru IimuroTeruo Yuasa
    • Tomoyuki KawabataShigeru IimuroTeruo Yuasa
    • C08L61/06C08L63/00C08L65/00C08L61/04C08L61/10C08L63/02
    • C08L65/00C08L63/00C08L61/06
    • A phenolic resin composition comprises a mixture of 100 parts by weight of a phenol aralkyl resin and 5 to 60 parts by weight of a novolak type phenolic resin having a content of binuclear components of not more than 10% by area, and a content of trinuclear components of not less than 50% by area and a sum content of tri- and tetra-nuclear components of 75% by area based on the total novolak phenolic resin except for the binuclear components, and an epoxy-cured product obtained by curing an epoxy resin while using the phenolic resin composition as set forth in claim 1 as a curing agent. The phenolic resin composition has a low viscosity and, when it is used as a curing agent for epoxy resins, the resulting epoxy-cured product has a low water absorption rate, is excellent in resistance to moisture and has a high glass transition temperature as compared with the cured product obtained using a novolak type phenolic resin as a curing agent.
    • 酚醛树脂组合物包含100重量份苯酚芳烷基树脂和5至60重量份具有不超过10面积%的双核成分含量的酚醛清漆型酚醛树脂和三核含量的混合物 基于除双核成分以外的总酚醛清漆酚醛树脂的面积为面积的不小于50%的三组分和四核组分的总含量为75%的环氧树脂固化产物,以及通过固化环氧树脂 树脂,同时使用如权利要求1所述的酚醛树脂组合物作为固化剂。 酚醛树脂组合物具有低粘度,当用作环氧树脂的固化剂时,得到的环氧固化产物的吸水率低,耐湿性优异,玻璃化转变温度高 使用酚醛清漆型酚醛树脂获得的固化产物作为固化剂。
    • 4. 发明授权
    • Method for simultaneous preparation of bisphenol F and novolak phenol
resins
    • 同时制备双酚F和酚醛清漆酚树脂的方法
    • US5395915A
    • 1995-03-07
    • US104920
    • 1993-08-12
    • Shigeru IimuroSatoru ItoTomoko TakashimaTakashi Kitamura
    • Shigeru IimuroSatoru ItoTomoko TakashimaTakashi Kitamura
    • C07C37/74C07C39/16C08G8/10C08G8/20C08G14/02C08G8/04
    • C07C39/16C07C37/20C07C37/74C08G8/10C08G8/20Y02P20/582
    • Herein disclosed is a method for simultaneously preparing a highly pure bisphenol F and/or a bisphenol F for general use and a novolak phenol resin and/or a high molecular weight novolak phenol resin comprising the steps of:(1) a preparation step comprising reacting phenol with formaldehyde in the presence of an acid catalyst and removing the acid catalyst, water and the unreacted phenol from the resulting reaction product to give a crude bisphenol F;(2) a distillation step comprising distilling a part of the crude bisphenol F to give a highly pure bisphenol F, as a distillate, having a binuclear moiety-content of not less than 95% by weight and a novolak phenol resin, as a still-bottom product, having a binuclear moiety-content of not more than 15% by area;(3) a step for mixing the highly pure bisphenol F with the remaining crude bisphenol F to give a bisphenol F for general use; and(4) a step for polymerizing the novolak phenol resin with formaldehyde in the presence of an acid catalyst to give a high molecular weight novolak phenol resin.
    • 本文公开了一种用于同时制备用于一般用途的高纯度双酚F和/或双酚F和酚醛清漆酚醛树脂和/或高分子量酚醛清漆酚树脂的方法,包括以下步骤:(1)制备步骤,包括使 苯酚与甲酸在酸催化剂存在下,从所得反应产物中除去酸催化剂,水和未反应的苯酚,得到粗双酚F; (2)蒸馏步骤,包括蒸馏粗双酚F的一部分,得到作为蒸馏物的高纯度双酚F,双核部分含量不小于95重量%,酚醛清漆酚树脂作为静止物 双产物,双核部分含量不超过面积的15%; (3)将高纯度双酚F与剩余的粗双酚F混合以得到通常使用的双酚F的步骤; 和(4)在酸催化剂存在下使酚醛清漆酚醛树脂与甲醛聚合的步骤,得到高分子量酚醛清漆酚醛树脂。