HYDROPHILIZING AGENT FOR ALUMINUM-CONTAINING METAL MATERIAL, HYDROPHILIZING METHOD, AND HYDROPHILIZED ALUMINUM-CONTAINING METAL MATERIAL
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United States of America Patent
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Issued Date -
Nov 10, 2011
app pub date -
Jan 21, 2010
filing date -
Jan 21, 2009
priority date (Note) -
Abandoned
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Abstract
A hydrophilizing agent that maintains a favorable wettability for dew condensation even after a long-term use; a hydrophilizing method; and an aluminum-containing metal material treated by the hydrophilizing method and having excellent wettability for dew condensation are provided. The hydrophilizing agent contains a modified polyvinyl alcohol obtained by graft polymerization of at least one type of N-vinyl lactam onto polyvinyl alcohol, thereby having a polymer and/or copolymer of the N-vinyl lactam in a side chain and a water-soluble cross-linking agent which can bind to a lactam moiety and/or a hydroxyl group of the modified polyvinyl alcohol. By applying and drying the hydrophilizing agent, a hydrophilic film having excellent wettability for dew condensation is formed.
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