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    • 2. 发明授权
    • Novel thermosetting resins and process for preparing the same comprising
reacting a novolak with a titanic acid ester
    • 新型热固性树脂及其制备方法,包括用氨基酸酯反应NOVOLAK
    • US3950309A
    • 1976-04-13
    • US302207
    • 1972-10-30
    • Tzong Jeng ChuSusumu Konii
    • Tzong Jeng ChuSusumu Konii
    • C08G8/28C08G77/52C08G79/00C08G2/30
    • C08G8/28C08G77/52C08G79/00
    • A novel thermosetting resin, the thermoset resin obtained therefrom having such a thermal resistance that the temperature at which the thermoset resin is caused to show a weight loss of 6% by heating at a temperature elevation rate of 10.degree.C. per minute is at least 400.degree.C., is prepared by reacting a specific phenolic resin with a member selected from the group consisting of a silicic acid ester of the formula Si(OR).sub.4 wherein R represents alkyl or aryl, a titanic acid ester of the formula Ti(OR).sub.4 wherein R has the same meaning as defined above and a mixture thereof in the presence of an alkaline catalyst while keeping the reaction system in a molten state, to an extent that 20 - 70 mole %, based on the phenol present in the starting system to be reacted with said member, of phenolic hydroxyl groups in terms of the amount of phenol, remain unreacted. The thus obtained novel resins of the present invention can be easily set or hardened in accordance with the ordinary manner; namely by mixing with a thermohardening agent such as hexamethylenetetramine and then heating, to give thermoset resins having a superior thermal resistance as compared with the conventional phenolic resins. In addition, the thermoset resins obtained from the novel resins of this invention are excellent in mechanical strength, electrical properties and luster of molded articles.
    • 5. 发明授权
    • Novel thermosetting resins and process for preparing the same
    • 新型热固性树脂及其制备方法
    • US4055546A
    • 1977-10-25
    • US646671
    • 1976-01-05
    • Tzong Jeng ChuSusumu Konii
    • Tzong Jeng ChuSusumu Konii
    • C08G8/28C08G77/52C08G79/00C08G10/04
    • C08G77/52C08G79/00C08G8/28
    • A novel thermosetting resin, the thermoset resin obtained therefrom having such a thermal resistance that the temperature at which the thermoset resin is caused to show a weight loss of 6% by heating at a temperature elevation rate of 10.degree. C. per minute is at least 400.degree. C., is prepared by reacting a specific phenolic resin with a member selected from the group consisting of a silicic acid ester of the formula Si(OR).sub.4 wherein R represents alkyl or aryl and a mixture of a silicic acid ester of the formula as defined above and a titanic acid ester of the formula Ti(OR).sub.4 wherein R has the same meaning as defined above in the presence of an alkaline catalyst while keeping the reaction system in a molten state, to an extent that 20- 70 mole %, based on the phenol present in the starting system to be reacted with said member, of phenolic hydroxyl groups in terms of the amount of phenol, remain unreacted. The thus obtained novel resins of the present invention can be easily set or hardened in accordance with the ordinary manner; namely by mixing with a thermohardening agent such as hexamethylenetetramine and then heating, to give thermoset resins having a superior thermal resistance as compared with the conventional phenolic resins. In addition, the thermoset resins obtained from the novel resins of this invention are excellent in mechanical strength, electrical properties and luster of molded articles.
    • 一种新型的热固性树脂,由其获得的热固性树脂具有这样的耐热性,使得热固性树脂的温度以每分钟10℃的升温速度加热显示出6%的重量损失,至少为 通过使特定的酚醛树脂与选自由式Si(OR)4的硅酸酯(其中R表示烷基或芳基)和硅酸酯的混合物 式(Ti)(OR)4的钛酸酯,其中R在碱性催化剂的存在下具有与上述相同的含义,同时保持反应体系处于熔融状态,至20-70℃ 基于与所述成员反应的起始体系中存在的苯酚,以苯酚的量计,酚羟基的摩尔%保持未反应。 由此得到的本发明的新型树脂可以按照常规方式容易地固化或硬化; 即通过与诸如六亚甲基四胺的热硬化剂混合,然后加热,得到与常规酚醛树脂相比具有优异耐热性的热固性树脂。 此外,由本发明的新型树脂得到的热固性树脂的机械强度,电性能和成型品的光泽性优异。