Method for evaluating chemical stability of polychloroprene latex
    3.
    发明授权
    Method for evaluating chemical stability of polychloroprene latex 有权
    评估聚氯丁二烯胶乳化学稳定性的方法

    公开(公告)号:US08883511B2

    公开(公告)日:2014-11-11

    申请号:US14002623

    申请日:2012-03-02

    摘要: Provided is a method for evaluating of the chemical stability of a polychloroprene latex that permits evaluation of the chemical stability of polychloroprene at high accuracy.First, an aqueous calcium hydroxide or calcium nitrate solution at a concentration of 0.05 to 0.40 mass % is added to a polychloroprene latex having a solid matter concentration of 45 to 65 mass %. The generated precipitate is then collected by filtration and the dry mass is determined, and the precipitation rate (%) is calculated according to the following Formula (I). Precipitation ⁢ ⁢ rate ⁢ ⁢ ( % ) = A { B × ( C ⁢ / ⁢ 100 ) } × 100 ( I ) (wherein, A represents the dry mass (g) of the precipitate; B represents the mass (g) of the polychloroprene latex, and C represents the solid matter concentration (mass %) of the polychloroprene latex.)

    摘要翻译: 提供了可以高精度地评价聚氯丁二烯的化学稳定性的聚氯丁二烯胶乳的化学稳定性的评价方法。 首先,将固体成分浓度为45〜65质量%的聚氯丁二烯胶乳中加入浓度为0.05〜0.40质量%的氢氧化钙或硝酸钙水溶液。 然后通过过滤收集产生的沉淀物,测定干物质,并根据下式(I)计算沉淀速率(%)。 其中,A表示沉淀物的干质量(g),B表示沉淀物的质量(g),B表示(C) 聚氯丁二烯胶乳,C表示聚氯丁二烯胶乳的固体成分浓度(质量%))

    METHOD FOR EVALUATING CHEMICAL STABILITY OF POLYCHLOROPRENE LATEX
    4.
    发明申请
    METHOD FOR EVALUATING CHEMICAL STABILITY OF POLYCHLOROPRENE LATEX 有权
    评价聚氯乙烯化学稳定性的方法

    公开(公告)号:US20130337573A1

    公开(公告)日:2013-12-19

    申请号:US14002623

    申请日:2012-03-02

    IPC分类号: G01N31/02

    摘要: Provided is a method for evaluating of the chemical stability of a polychloroprene latex that permits evaluation of the chemical stability of polychloroprene at high accuracy.First, an aqueous calcium hydroxide or calcium nitrate solution at a concentration of 0.05 to 0.40 mass % is added to a polychloroprene latex having a solid matter concentration of 45 to 65 mass %. The generated precipitate is then collected by filtration and the dry mass is determined, and the precipitation rate (%) is calculated according to the following Formula (I). Precipitation   rate   ( % ) = A { B × ( C  /  100 ) } × 100 ( I ) (wherein, A represents the dry mass (g) of the precipitate; B represents the mass (g) of the polychloroprene latex, and C represents the solid matter concentration (mass %) of the polychloroprene latex.)

    摘要翻译: 提供了可以高精度地评价聚氯丁二烯的化学稳定性的聚氯丁二烯胶乳的化学稳定性的评价方法。 首先,将固体成分浓度为45〜65质量%的聚氯丁二烯胶乳中加入浓度为0.05〜0.40质量%的氢氧化钙或硝酸钙水溶液。 然后通过过滤收集产生的沉淀物,测定干物质,并根据下式(I)计算沉淀速率(%)。 沉淀率(%)= A {B×(C 100/100)}×100(I)(其中,A表示沉淀物的干质量(g); B表示 聚氯丁二烯胶乳,C表示聚氯丁二烯胶乳的固体成分浓度(质量%))