Process to make synthetic leather and synthetic leather made therefrom
US7306825B2 · kind B2 · utility
3Cited by
23References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2003 |
| Grant date | Dec 11, 2007 |
| Priority date | — |
| Expiry date | May 21, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/20
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A synthetic leather is made by a impregnating a non-woven or woven textile with an aqueous polyurethane dispersion comprised of a nonionizable polyurethane and an external stabilizing surfactant. The impregnated textile is then exposed to water containing a coagulant for a coagulation time sufficient to coagulate the dispersion. The method may be used to form a synthetic leather having excellent wet ply adhesion and may contain an insoluble multivalent cation organic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.