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    • 1. 发明授权
    • Process for the production of liquid epoxy-novolak resins and product thereof
    • 液态环氧树脂及其制品的生产工艺
    • US3867346A
    • 1975-02-18
    • US39509273
    • 1973-09-07
    • SIR SOC ITALIANA RESINE SPA
    • VARGIU SILVIOPITZALIS MARIOCRESPOLINI GIANCARLO
    • C07D301/28C08G8/00C08G8/36C08G59/00C08G59/08C08G5/18
    • C08G59/08
    • Process for the production of liquid epoxy-novolak resins having high contents of epoxy groups by (a) mixing and homogenizing a novolak phenolic resin having a molecular weight of about 220 to 300 and with about 2.2 to 2.9 phenolic hydroxyl groups per molecule and an epihalohydrin (about 5 to 10 moles of epihalohydrin are used per mole equivalent of phenolic hydroxyl groups in the novolak phenolic resin), (b) contacting the homogenized mixture with kieselguhr at temperatures of about 20* to 40* C and separating the kieselguhr, (c) adding an inorganic base in the course of at least 1 hour at temperatures of about 80* to 115* C (the total quantity of base to be used being so chosen that the ratio of the number of phenolic hydroxyl groups in the novolak resin to the number of equivalents of base is about 0.78:1 to 0.75:1) and (d) separating the liquid epoxynovolak resin from the reaction mixture obtained.
    • 通过(a)将分子量为约220至300的酚醛清漆酚醛树脂和每分子约2.2至2.9个酚羟基和表卤代醇混合并均化,生产具有高含量环氧基团的液体环氧酚醛清漆树脂的方法 (酚醛清漆酚醛树脂中每摩尔当量酚羟基使用约5至10摩尔表卤代醇),(b)将均化的混合物与硅藻土在约20至40℃的温度下接触并分离硅藻土(c )在约80-115℃的温度下在至少1小时的过程中加入无机碱(所使用的碱的总量被选择为使酚醛清漆树脂中的酚羟基的数量与 碱的当量数为约0.78:1至0.75:1)和(d)从获得的反应混合物中分离液体环氧 - 酚醛清漆树脂。
    • 6. 发明授权
    • Process for the production of epoxy-novolak resins and products thereof
    • 用于生产环氧 - 诺瓦克树脂及其制品的方法
    • US3860561A
    • 1975-01-14
    • US38722773
    • 1973-08-09
    • SIR SOC ITALIANA RESINE SPA
    • VARGIU SILVIOGIOVANNI SESTO SPITZALIS MARIOCRESPOLINI GIANCARLO
    • C08G8/00C08G8/36C08G59/00C08G59/08C09D163/00C08G5/18
    • C08G59/08
    • Process for the production of solid epoxy-novolak resins having a high content of epoxy groups by adding an inorganic base, preferably sodium hydroxide, in a quantity of about 2 to 10 wt. % of total quantity of base to be used to a fused novolak phenolic resin having an average molecular weight of about 500 to 650 and containing about 5 to 6 phenolic hydroxyl groups per molecule at about 80* to 100*C, the total quantity of base to be used corresponding to about 0.9 to 1.1 equivalents of base per mole equivalent of phenolic hydroxyl groups in the novolak phenolic resin, adding a epihalohydrin to the reaction mixture obtained in the course of at least about 2 hours at temperatures of about 80* to 100*C in a quantity of about 3 to 6 moles per mole equivalent of phenolic hydroxyl groups in the novolak phenolic resin, adding the remainder of the inorganic base to the reaction mixture obtained in the course of at least about 3 hours at temperatures of about 85* to 110*C, and separating the solid epoxy-novolak resin from the reaction mixture obtained.
    • 通过加入约2-10重量%的无机碱,优选氢氧化钠,生产具有高含量环氧基团的固体环氧 - 酚醛清漆树脂的方法。 平均分子量为约500〜650,约80〜100℃,每分子含有约5〜6个酚羟基的熔融酚醛清漆酚醛树脂所用碱的总量的百分比,碱的总量 在酚醛清漆酚醛树脂中相对于每摩尔当量酚羟基约0.9-1.1当量碱,在约80℃至100℃的温度下在至少约2小时内获得的反应混合物中加入表卤代醇 在酚醛清漆酚醛树脂中每摩尔当量酚羟基约3至6摩尔的量的C C,将剩余的无机碱加入到在约85℃的温度下在至少约3小时的过程中获得的反应混合物 DEG至110℃,并从得到的反应混合物中分离固体环氧 - 酚醛清漆树脂。