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    • 3. 发明授权
    • Removal of volatile organic compounds from polymer dispersions
    • 从聚合物分散体中除去挥发性有机化合物
    • US06740691B1
    • 2004-05-25
    • US10019136
    • 2002-09-10
    • Johanna Maria Sophia LorteijeMarkus Aurelius Von ArxRolf StuderPetrus Leonardus Swinkels
    • Johanna Maria Sophia LorteijeMarkus Aurelius Von ArxRolf StuderPetrus Leonardus Swinkels
    • C08J300
    • C08F6/003C08F6/006
    • A process for treating an aqueous polymer latex/dispersion of synthetic polymers prepared by polymerizing one or more monomeric materials for at least 80%, involving: A. adding to the polymer latex/dispersion a sufficient amount of at least one reducing agent in one or more portions followed by adding at least one free radical generator in such a way that at least the bulk of the reducing agent has been added before addition of free radical generator is started and maintaining the mixture at a suitable temperature for a period of time which is sufficient to reduce the VOC-level of the latex/dispersion to decrease to below 1,500 ppm, preferably to below 1,000 ppm after which B. water vapor and/or gas is/are sparged into the latex/dispersion while the temperature of the latex/dispersion is maintained at a suitable temperature for a period of time which is sufficient to decrease the VOC-level to below 200 ppm, preferably to below 50 ppm, most preferably to below 15 ppm.
    • 一种用于处理通过将一种或多种单体材料聚合至少80%制备的合成聚合物的水性聚合物胶乳/分散体的方法,涉及:A。 在一个或多个部分中向聚合物胶乳/分散体中加入足够量的至少一种还原剂,然后加入至少一种自由基发生剂,使得至少大部分还原剂在添加游离 启动自由基发生器并将混合物保持在合适的温度一段时间,这足以降低胶乳/分散体的VOC水平降至低于1,500ppm,优选低于1,000ppm。 将水蒸气和/或气体喷射到胶乳/分散体中,同时将胶乳/分散体的温度保持在合适的温度下一段时间,其足以将VOC水平降低至低于200ppm,优选至 低于50ppm,最优选低于15ppm。