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    • 4. 发明申请
    • DISTILLED EPOXY NOVOLAC RESINS
    • 蒸馏环氧NOVOLAC树脂
    • WO2015095364A1
    • 2015-06-25
    • PCT/US2014/070913
    • 2014-12-17
    • DOW GLOBAL TECHNOLOGIES LLC
    • FAN, William W.JEWELL, Dennis W.WALLACE, Stephen B.LARSEN, Travis H.
    • C08G59/02B01D1/06C08G59/08
    • C08G59/025C08G59/08
    • A continuous process comprising: a) separating a starting epoxy novolac resin comprising oligomers having an average functionality of greater than 2.5 and a hydrolyzable chlorine content of less than 450 ppm with a first continuous evaporator apparatus under a vaporization temperature in the range of from 150°C to 250°C and an absolute pressure of from 0.05 to 1 mmHg absolute to form a first vapor fraction comprising epoxy novolac resin having more than 95 weight percent of 2-functional components and wherein the mass of the first vapor fraction is in the range of from 5 to 20 weight percent of the starting epoxy novolac resin; and a first bottom fraction comprising epoxy novolac resin having a lower weight percent of 2-functional components in comparison with the weight percent of 2-functional components of the starting epoxy novolac resin; b) recovering the first bottom fraction; and c) condensing from 95 weight percent to 99.95 weight percent of the first vapor fraction at a temperature in the range of from 50°C to 200°C to form a first partially condensed vapor fraction product having at least 95 weight percent of 2-functional components and having a total chlorine content of less than 900 ppm and an uncondensed vapor product comprising halogenated impurities, is disclosed.
    • 一种连续方法,包括:a)在蒸发温度为150℃的范围内,用第一连续蒸发器装置分离包含平均官能度大于2.5且低于450ppm的可水解氯含量的低聚物的起始环氧酚醛清漆树脂 C至250℃和绝对压力为0.05至1mmHg绝对压力以形成包含具有大于95重量%的2-功能组分的环氧酚醛清漆树脂的第一蒸气馏分,并且其中第一蒸气馏分的质量在 为起始环氧酚醛清漆树脂的5至20重量%; 以及与起始环氧酚醛清漆树脂的2-官能组分的重量百分比相比,包含具有较低重量百分比的2-官能组分的环氧酚醛清漆树脂的第一底部馏分; b)回收第一底部馏分; 和c)在50℃至200℃的温度范围内从95重量%至99.95重量%的第一蒸气馏分冷凝,以形成第一部分冷凝的蒸气馏分产物,其具有至少95重量%的2- 功能组分,总氯含量低于900ppm,含有卤化杂质的未冷凝蒸气产物。