Process for producing porous polyurethane coatings using polyol ester additives
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United States of America Patent
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Dec 26, 2023
Grant Date -
Oct 3, 2019
app pub date -
Jul 13, 2017
filing date -
Jul 19, 2016
priority date (Note) -
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Abstract
The invention relates to a process for producing a porous polyurethane coatings, using a polyol ester as additives in an aqueous polymer dispersion, the process comprising the steps of a) providing a mixture comprising an aqueous polymer dispersion, a polyol ester, and an additive, b) foaming the mixture to give a homogeneous, fine-cell foam, c) adding at least one thickener to establish the desired viscosity of the wet foam, d) applying a coating of the foamed polymer dispersion to a suitable carrier, e) drying the coating. The invention further relates to a phosphorylated polyol ester.
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