Thixotropic rust removal coating and process
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United States of America Patent
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Mar 25, 1986
Grant Date -
N/A
app pub date -
Mar 31, 1982
filing date -
Mar 31, 1982
priority date (Note) -
Expired
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Abstract
Spreadable thixotropic coating composition suitable for rust removal and containing polyvinylpyrrolidone, water and a thixotropic agent which is either xanthan gum or water-soluble crosslinked interpolymer of maleic anhydride, monovinyl alkyl ether and crosslinking agent. The composition has a pH between about 1.5 and 7.0 is applied to rusty metal surfaces and allowed to dry. During drying the rust becomes incorporated into the coating which is then easily removed.
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