Process for concentrating aqueous emulsions of fluorinated polymers
    2.
    发明授权
    Process for concentrating aqueous emulsions of fluorinated polymers 失效
    浓缩氟化聚合物水性乳液的工艺

    公开(公告)号:US3668167A

    公开(公告)日:1972-06-06

    申请号:US3668167D

    申请日:1969-12-01

    Applicant: MONTEDISON SPA

    CPC classification number: C08J3/02 C08F6/20 C08J2327/18 C08L27/18

    Abstract: A process for the concentration of aqueous polytetrafluoroethylene emulsions comprising forming atop the emulsion to be concentrated a layer of water absorbing agent, maintaining the resultant two layers in contact with each other until absorption of water from the emulsion by the said water absorbing agent has proceeded to a desired degree, separating the said layers, and thence recovering the aqueous polytetrafluoroethylene emulsion thus concentrated. The water absorbing agent can be any one of a number of water soluble organic liquid or solid water absorbing agents having a density less than that of the emulsions to be concentrated.

    Abstract translation: 一种浓缩聚四氟乙烯水乳液的方法,包括在所述乳液上形成浓缩一层吸水剂,保持所得的两层彼此接触,直到所述吸水剂从乳液中吸收水已经进行到 期望的程度,分离所述层,然后回收如此浓缩的聚四氟乙烯水乳液。 吸水剂可以是密度小于待浓缩乳液密度的多种水溶性有机液体或固体吸收剂中的任何一种。

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