Process for producing a leather-like sheet
US6479153B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2000 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Mar 28, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A leather-like sheet is prepared by impregnating a fibrous substrate, which may comprise a microfine fiber-forming fiber, with a thermally gellable composite resin emulsion obtained by emulsion-polymerizing an ethylenically unsaturated monomer (B) in the presence of a polyurethane emulsion (A) at a weight ratio of 90/10 to 10/90, solidifying the thermally gellable composite emulsion in the impregnated fibrous substrate, and if the fibrous substrate is a microfine fiber-forming fiber, converting the microfine fiber-forming fiber to a microfine fiber. After impregnation, the emulsion in the impregnated fibrous substrate is thermally solidified, thereby producing a leather-like sheet having excellent softness and fulfillment feeling, and good hand feel, feel and physical properties like that of natural leather. A film of the composite resin has a specific elastic modulus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.