Water-soluble lubricant for warm or hot metal forming
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United States of America Patent
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Sep 25, 2007
Grant Date -
Apr 7, 2005
app pub date -
Oct 2, 2003
filing date -
Oct 2, 2003
priority date (Note) -
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Abstract
This invention relates to a water-soluble lubricant for warm or hot metal forming, comprising a high polymer compound which comprises an imide group, which has a weight-average molecular weight of from 1,000 to 1,000,000. The water-soluble lubricants of the invention possess exceptional lubricity for reducing friction between a die and a workpiece, have a minimal adverse effect on the operating environment, and can readily be treated in wastewater.
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