Microporous structure and method of making the same
    1.
    发明授权
    Microporous structure and method of making the same 失效
    微结构及其制备方法

    公开(公告)号:US3674722A

    公开(公告)日:1972-07-04

    申请号:US3674722D

    申请日:1970-08-10

    Abstract: This disclosure relates to a novel process and to a novel product produced thereby. The product comprises a vinyl chloride polymer having an improved microporous structure and is made by a process which involves dispersing a vinyl chloride polymer latex, i.e., an aqueous suspension of a vinyl chloride polymer, in an organic liquid which is a non-solvent for the polymer, preferably removing most of the water, and heating the resulting dispersion to sinter the vinyl chloride polymer particles to form a microreticulated microporous structure. The vinyl chloride polymer latex may, for example, be a colloidal suspension of polyvinyl chloride particles in water. Such a latex may be obtained commercially or may be prepared by conventional methods. The non-solvent organic liquids should be water-miscible and should have a boiling point above 130* C. and exhibit substantially no solvating or swelling effect on the vinyl chloride polymer. The improved microporous structure of this invention is particularly useful as a filter material. The process of the invention is especially suited for the formation of shaped porous articles which are useful as filters.

    Microporous styrene polymers and method of making same
    3.
    发明授权
    Microporous styrene polymers and method of making same 失效
    微孔苯乙烯聚合物及其制备方法

    公开(公告)号:US3887730A

    公开(公告)日:1975-06-03

    申请号:US28248172

    申请日:1972-08-21

    Abstract: Microporous styrene polymers are provided having randomly interconnected open network of irregularly shaped pores whose walls consist of cohered spherical particles of the polymer. These microporous styrene polymers are produced by mixing styrene polymer latex with a water-soluble ether, casting, molding, or impregnating the resulting mixture into a fibrous material, heating same to a temperature of from about 80*C to about 120*C and removing the ether.

    Abstract translation: 提供微孔苯乙烯聚合物,其具有随机互连的不规则形状的孔的开放网络,其壁由聚合物的聚焦球形颗粒组成。 这些微孔苯乙烯聚合物通过将苯乙烯聚合物胶乳与水溶性醚混合,将所得混合物浇铸,模塑或浸渍成纤维材料,将其加热至约80℃至约120℃的温度并除去 以太。

    Process for the removal of oil from the surface of a body of water
    4.
    发明授权
    Process for the removal of oil from the surface of a body of water 失效
    从水体表面去除油的方法

    公开(公告)号:US3674683A

    公开(公告)日:1972-07-04

    申请号:US3674683D

    申请日:1970-01-02

    Inventor: RAINER NORMAN B

    CPC classification number: B01J20/22 C02F1/681

    Abstract: This disclosure relates to a process for removal of oil from the surface of a body of water, wherein a material comprising a particulate microporous hydrophobic vinyl chloride polymer, such as polyvinyl chloride, is applied to the oil.

    Abstract translation: 本公开涉及从水体表面除去油的方法,其中将包含颗粒状微孔疏水氯乙烯聚合物(例如聚氯乙烯)的材料施加到油上。

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