Aqueous polyurethane dispersion with non-ionic reactive emulsifier and sulfonate group

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United States of America Patent

PATENT NO 11680185
APP PUB NO 20200385608A1
SERIAL NO

16945213

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Abstract

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The present invention relates to a method for preparing an aqueous polyurethane (PU) dispersion with non-ionic reactive emulsifiers and sulfonate groups. The aqueous PU dispersion includes the following components: 10-40 parts by weight of polymer polyol, 5-20 parts by weight of isocyanate monomer, 0.1-1.5 parts by weight of trimethylolpropane, 3-15 parts by weight of monofunctional alkoxy polyethylene glycol or propylene glycol, 0.5-2.0 parts by weight of diaminosulphonate chain extender, 0.5-3.0 parts by weight of non-ionic organic amine chain extender, 0.01-0.05 parts by weight of catalyst, 0-8 parts by weight of organic solvent, 50-80 parts by weight of deionized water, and 0.1-5 parts by weight of thickener. In the presence of non-ionic reactive emulsifiers, introduction of sulfonate groups at late chain extension stage of the aqueous PU dispersion obtain stable large-size polymer particles. A coating film thereof has a 60° gloss of <1.0; the emulsion has excellent storage stability and redispersibility.

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Patent Owner(s)

Patent OwnerAddress
SHANGHAI SISHENG POLYMER MATERIALS CO LTDNO 155 PINGYE ROAD CAOJING TOWN JINSHAN DISTRICT SHANGHAI 201507

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Wei, Yuchun Shanghai, CN 3 0
Wei, Ziao Shanghai, CN 3 0

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