Aqueous binder formulation for metal and ceramic feedstock for injection molding and aqueous coating composition
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United States of America Patent
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Apr 14, 2009
Grant Date -
Mar 16, 2006
app pub date -
Oct 20, 2005
filing date -
Nov 21, 2002
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Abstract
Low cost water based binder system was developed for shaping ferrous, nonferrous metals and/or ceramics parts by injection molding processes. The process comprises the steps of preparing a mixture containing a gel-forming powder comprising carrageenan, metal and/or ceramic powders, de-ionized water and a gel-strengthening additive. The mixture is injection molded to produce self-supporting articles. The present invention provides a direct compounding and molding of metal and/or ceramic feedstock. Additionally, a coating composition comprising gelatine, water and a metal and/or ceramic powder is used to form coating layers on selected materials.
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