Preparation method for foaming waterborne PU
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United States of America Patent
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Issued Date -
Aug 12, 2004
app pub date -
Feb 7, 2003
filing date -
Feb 7, 2003
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Abstract
The present invention relates to a preparation method for foaming waterborne PU, which is performed by adding hydrocarbon with a high boiling point to a waterborne PU pre-polymer, allowing hydrocarbon to be encapsulated by waterborne PU and dried to form voids. A composition and the preparation method of this waterborne PU can be effectively applied to textile coating and leather fabrication.
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