Process for forming synthetic leather
US11834780B2 · kind B2 · utility
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16References
10Claims
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Key dates
| Filing date | Aug 21, 2018 |
| Grant date | Dec 5, 2023 |
| Priority date | — |
| Expiry date | Sep 10, 2039 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06N3/142
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Provided are a process, the process includes (i) first, contacting a textile with an aqueous solution containing a cationic hydroxyethylcellulose polymer to form a modified textile component; (ii) subsequently, impregnating the modified textile component with an aqueous polyurethane dispersion externally stabilized with an anionic surfactant, the aqueous polyurethane dispersion including a second surfactant; and (iii) precipitating the polyurethane in the modified textile component. Also disclosed are a synthetic leather produced by the process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.