Process for producing artificial leather
US4102719A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jul 15, 1976 |
| Grant date | Jul 25, 1978 |
| Priority date | — |
| Expiry date | Jul 15, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24512
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process for producing an artificial leather having excellent touch, appearance and full-hand similar to that of natural leather and having further excellent softness and surface strength, which comprises coating a composition comprising an urethane prepolymer, a combination of catalysts and a foam stabilizer and including a plurality of extremely fine cells (foams) of an inert gas, onto a release paper or a layer of a surface treating agent coated on a release paper in a specified thickness; subjecting the resultant to a steam treatment under a specified atmosphere; laminating a base sheet onto the coating layer under pressure; subjecting the laminated product to a heat treatment at a specified temperature, and then peeling off the release paper, and optionally further treating the product with a surface treating agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.