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n4google.com.
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Subject Item
isa:110977781
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The base copolymers can be sulfonated, or in accordance with a further aspect of this invention, may be phosphorylated, carboxylated, quaternary-aminoalkylated or chloromethylated, and further modified to yield --CH2 PO3 H2, --CH2 NR3 + where R is an alkyl, or --CH2 NAr3 + where Ar is an aromatic (arene), to provide a cation or anion exchange membrane.
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n4:au
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isap:131161655
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isa:110977781