Aluminum alloy heat exchanger resistive to tobacco odor impregnation
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United States of America Patent
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-
Feb 10, 2004
Grant Date -
Jul 11, 2002
app pub date -
Nov 7, 2001
filing date -
Nov 10, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An aluminum alloy heat exchanger resistive to impregnation of tobacco odor includes a base body of an aluminum alloy heat exchanger and an organic hydrophilic coating layer formed on the surface of the heat exchanger base body, and including a component (A) containing a chitosan compound selected from chitosan and derivatives thereof, and a component (B) containing a carboxylic compound having two or more carboxyl groups per molecule thereof, in a total solid amount of the components (A) and (B) of 20% by mass or more, based on the total amount by mass of the organic hydrophilic coating layer.
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