초록 ▼

Molded articles of an aromatic polymer are described having at least a portion of the surface layer of the polymer modified by a heterogeneous reaction of the solid polymer and a reactive solution. The polymer to be treated may contain different repeating units in the said surface layer. The treatme

Molded articles of an aromatic polymer are described having at least a portion of the surface layer of the polymer modified by a heterogeneous reaction of the solid polymer and a reactive solution. The polymer to be treated may contain different repeating units in the said surface layer. The treatment to produce the molded article may comprise casting, injection molding, extending or otherwise shaping the polymer to mold the polymer into a desired shape. The heterogeneous treatment to produce the heterogeneously modified molded article may comprise treating a surface layer of a flat cast sheet in the form of a flat membrane, spirally wound membrane, hollow fiber, or tubular material.

대표청구항 ▼

A molded article of an aromatic polymer having a modified surface layer, comprising: (a) an article molded of an aromatic polymer having repeating units of the formula: [Figure] (I) where n is zero or one, m is the degree of polymerization, and when n is zero, R is H and at least one of R1 is a labi

A molded article of an aromatic polymer having a modified surface layer, comprising: (a) an article molded of an aromatic polymer having repeating units of the formula: [Figure] (I) where n is zero or one, m is the degree of polymerization, and when n is zero, R is H and at least one of R1 is a labile group exchangeable with an alkali metal and any remaining R1 is H, and when n is one, X is selected from the group consisting of SO2, O and lower alkyl groups, and i) when X is selected from the group consisting of O and lower alkyl groups, R is H and at least one of R1 is halogen and any remaining R1 is H, and ii) when X is SO2, R1 is H and at least one of R is a site or an alpha carbon which is reactive with an alkali metal and any remaining R is H, and (b) a modified surface layer of said molded article having repeating units of the formula: [Figure] (II) where n is zero or one, m is the degree of polymerization, and when n is zero, R is H and at least one of R1 is selected from the group consisting of CO2, Si(CH3)2 Cl2, propyl sultone, a di-anhydride, a di-ketone, Tris (2,3-dibromopropyl) isocyanurate, and a di-acid chloride, and any remaining R1 is H, when n is one, X is selected from the group consisting of SO2, O, and lower alkyl groups, and i) when X is selected from the group consisting of O and lower alkyl groups, R is H and at least one of R1 is selected from the group consisting of CO2, Si(CH3)2 Cl2, propyl sultone, a di-anhydride, a di-ketone, Tris (2,3-dibromopropyl) isocyanurate, and a di-acid chloride, and any remaining R1 is H, and ii) when X is SO2, R1 is H and at least one R is selected from the group consisting of CO2, Si(CH3)2 Cl2, propyl sultone, a di-anhydride, a di-ketone, Tris (2,3-dibromopropyl) isocyanurate, and a di-acid chloride, and any remaining R is H.