Process for producing artificial leather
US3939021A · kind A · utility
13Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1973 |
| Grant date | Feb 17, 1976 |
| Priority date | — |
| Expiry date | Dec 18, 1993 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/469
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Artificial leather is produced by applying a dope comprising urethane prepolymers containing terminal isocyanate groups, an amine catalyst and a foam stabilizer onto a releasing carrier sheet, exposing the resulting coating layer to a moisture-containing gas under controlled conditions, laminating the coating layer onto a backing material and stripping off the releasing carrier sheet. The resulting artificial leather has a cellular structure of polyurethane microfoam in adhesion with the backing material and an adhesion strength of 100 to 10,000 g/cm of width.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.