Waterborne polyurethane and preparation method thereof
US10907004B2 · kind B2 · utility
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2References
12Claims
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Assignee
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Key dates
| Filing date | Dec 28, 2018 |
| Grant date | Feb 2, 2021 |
| Priority date | — |
| Expiry date | Aug 2, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2170/80
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A waterborne polyurethane is provided. The waterborne polyurethane is formed by mixing a polyol, a diisocyanate, a dimethylol alkyl acid, and an epoxy resin into a mixture, and polymerizing the mixture. When the usage amount of the epoxy resin used is 1 part by weight, the usage amount of the polyol is 3 to 30 parts by weight, the usage amount of the diisocyanate is 1 to 10 parts by weight, and the usage amount of the dimethylol alkyl acid is 0.1-3.0 parts by weight. The epoxy resin includes an epoxy resin having a cyclic structure, a triacylglycerol having an epoxy group, or a combination thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.