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    • 9. 发明公开
    • Process for producing highly reactive modified phenolic resin
    • Verfahren zur Herstellung von hochreaktiven modifizierten Phenolharzen。
    • EP0665249A1
    • 1995-08-02
    • EP95101064.4
    • 1995-01-26
    • KASHIMA OIL CO., LTD
    • Tsumura, Masahiro, c/o Kashima Oil Co.,Ltd.Tashima, Masao, c/o Kashima Oil Co.,Ltd.Miyasita, Hiromi, c/o Kashima Oil Co.,Ltd.
    • C08G8/28C08L61/06C08L63/00H01B3/36
    • H01B3/36C08G8/28C08G10/04C08G14/04C08L61/14C08L63/00C08L2666/22C08L61/04
    • A process for producing a highly reactive modified phenolic resin, comprising the steps of polycondensing a petroleum heavy oil or pitch, a formaldehyde polymer and a phenol in the presence of an acid catalyst to thereby prepare a modified phenolic resin; and reacting the resultant modified phenolic resin with a phenol in the presence of an acid catalyst but in the absence of a crosslinking agent such as a formaldehyde polymer to thereby lower the molecular weight of the modified phenolic resin. This highly reactive modified phenolic resin has a low number average molecular weight and a high phenol content, so that its resin melt viscosity is low and that it exhibits a markedly improved reactivity with an epoxy resin. Accordingly, the combination thereof with an epoxy resin provides a molding material suitable for producing a molding which is excellent in not only thermal resistance and moldability but also dimensional stability and other mechanical properties, especially a material for electrical or electronic part and a semiconductor sealer.
    • 一种生产高反应性改性酚醛树脂的方法,包括在酸催化剂存在下使石油重油或沥青,甲醛聚合物和苯酚缩聚的步骤,从而制备改性酚醛树脂; 在酸催化剂的存在下,使所得改性酚醛树脂与苯酚反应,但不存在交联剂如甲醛聚合物,从而降低改性酚醛树脂的分子量。 该高反应性改性酚醛树脂具有低的数均分子量和高的苯酚含量,使得其树脂熔体粘度低,并且显示出与环氧树脂显着改善的反应性。 因此,与环氧树脂的组合提供了适合于制造不仅具有优异的耐热性和成型性,而且尺寸稳定性和其它机械性能优异的成型体的成型材料,特别是电气或电子部件的材料以及半导体密封剂。
    • 10. 发明公开
    • PROCESS FOR PRODUCING MODIFIED PHENOLIC RESIN
    • VERFAHREN ZUR HERSTELLUNG VON MODIFIZIERTEN PHENOLHARZEN
    • EP1055690A1
    • 2000-11-29
    • EP99973298.5
    • 1999-10-04
    • Kashima oil Co., Ltd.
    • TAKEDA, Mitsunori, Kashima RefinerySATO, Masamichi, Kashima Refinery
    • C08G8/28C08G10/04C08G14/04C08G16/04C08G59/62
    • C08G59/621C08G8/28C08G10/04C08G14/04C08L63/00C08L61/04
    • A process for producing a modified phenolic resin, comprising heating a heavy oil or pitch of given average molecular weight and, per mol, calculated from the average molecular weight, of the heavy oil or pitch; 0.3 to 25 mol, in terms of formaldehyde, a formaldehyde compound and 0.5 to 50 mol of a phenol of the formula (I) (wherein R 1 represents a linear or branched unsaturated hydrocarbon group having 1 to 2 unsaturated bonds and having 2 to 10 carbon atoms, p is 1 or 2, X represents an alkyl group having 1 to 5 carbon atoms, and q is 0 or 1) under stirring in the presence of an acid catalyst to thereby effect a polycondensation.
      The modified phenolic resin obtained by this process, as compared with the conventional modified phenolic resin produced from a heavy oil or pitch as a feedstock, has an extremely low softening point so as to be flowable at about room temperature and has also a low melt viscosity, thereby ensuring very excellent moldability. Further, in combination with an epoxy resin, the modified phenolic resin can be formed into a molded article which is excellent in not only heat resistance, moisture resistance, corrosion resistance and adhesive force but also mechanical properties such as dimensional stability and strength.
    • 一种生产改性酚醛树脂的方法,包括加热重油或沥青的给定平均分子量,每摩尔由平均分子量计算的重油或沥青; 0.3至25摩尔,以甲醛计,甲醛化合物和0.5至50摩尔式(I)的苯酚(其中R 1表示具有1至2个不饱和键的直链或支链不饱和烃基并具有2个 至10个碳原子,p为1或2,X表示具有1至5个碳原子的烷基,q为0或1)在酸催化剂的存在下在搅拌下进行缩聚。 与通过重油或沥青作为原料生产的常规改性酚醛树脂相比,通过该方法获得的改性酚醛树脂具有极低的软化点,以便在约室温下流动并且还具有低熔体粘度 ,从而确保非常优异的成型性。 此外,与环氧树脂组合,可以将改性酚醛树脂形成为不仅耐热性,耐湿性,耐腐蚀性和粘合力优异的机械性能如尺寸稳定性和强度的成型品。