MOLD RELEASE SHEET AND MOLDED ARTICLES
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United States of America Patent
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Issued Date -
Feb 3, 2011
app pub date -
Nov 7, 2008
filing date -
Mar 14, 2008
priority date (Note) -
Abandoned
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Abstract
The object of the present invention is to improve the releasing property of a molded article. characterized by coating or impregnating an aqueous binder on/in to a porous sheet, wherein the porous sheet has preferably an airflow resistance of 0.01 to 1.2 kPa·s/m, and the porous sheet is a preferably creped and/or embossed stretchable paper, the aqueous binder containing (A) a polymer produced by radical polymerization of an ethylenical unsaturated dicarboxylic anhydride or an ethylenical unsaturated dicarboxylic acid whose carboxylic acid group can form acid anhydride group, and (B) an alkanolamine having at least two hydroxyl groups.. When the laminated material is molded by heating, the aqueous binder quickly hardens, demonstrating its releasing property.
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