METHOD FOR PRODUCING AQUEOUS FLUORINE-CONTAINING POLYMER DISPERSING ELEMENT, AND PURIFIED AQUEOUS FLUORINE-CONTAINING POLYMER DISPERSING ELEMENT
    2.
    发明公开
    METHOD FOR PRODUCING AQUEOUS FLUORINE-CONTAINING POLYMER DISPERSING ELEMENT, AND PURIFIED AQUEOUS FLUORINE-CONTAINING POLYMER DISPERSING ELEMENT 审中-公开
    方法制备含水FLUOR含POLYMERDISPERGIERELEMENTS和纯化含的氟POLYMERDISPERGIERELEMENT

    公开(公告)号:EP2853548A4

    公开(公告)日:2016-03-16

    申请号:EP13793904

    申请日:2013-05-22

    申请人: DAIKIN IND LTD

    摘要: An object of the present invention is to provide methods for preparing a fluoropolymer aqueous dispersion that allow efficient removal of iron ions from fluoropolymer aqueous dispersions, and purified fluoropolymer aqueous dispersions. The present invention relates to a method for preparing a fluoropolymer aqueous dispersion, including: step (A) of preparing a fluoropolymer aqueous dispersion comprising a fluoropolymer having at least one selected from the group consisting of - SO 2 Y and -COOR (wherein Y is a halogen, and R is a C1 to C4 alkyl) by emulsion polymerization; step (B) of heating the fluoropolymer aqueous dispersion to 50°C or higher; and step (C) of contacting the fluoropolymer aqueous dispersion with an ion exchange resin for cation exchange after step (B), thereby providing a purified fluoropolymer aqueous dispersion, the fluoropolymer aqueous dispersion being adjusted to pH 7 or lower from the end of the polymerization in step (A) to the end of step (C).

    摘要翻译: 本发明的一个目的是提供一种用于制备氟聚合物分散体wässrige并允许从含氟聚合物非水性分散体,并纯化氟聚合物非水性分散体有效地除去铁离子的提供方法。 本发明涉及一种用于制备氟聚合物分散体wässrige,包括:制备一种氟聚合物水性分散体,其包括选自下组的至少一个由具有含氟聚合物的步骤(A) - SO 2 Y和COOR(worin Y是 卤素,并且R为C1-C4烷基)通过乳液聚合; 加热含氟聚合物分散体wässrige至50℃或更高的工序(B); 与离子交换树脂接触,含氟聚合物分散体wässrige为阳离子交换AfterStep的(B),由此提供纯化氟聚合物分散wässrige的和步骤(C)中,含氟聚合物分散体wässrige被调节至pH为7或更低从聚合结束 在步骤(A)至步骤(C)结束。