Method for attaching a polyurethane surface to a polyvinyl chloride surface
US6045918A · kind A · utility
0Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 18, 1998 |
| Grant date | Apr 4, 2000 |
| Priority date | — |
| Expiry date | May 18, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31551
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Method for attaching a polyurethane (PU) surface to a polyvinyl chloride or other polymer surface, particularly useful for making smart cards. A plasticizer compatible with both the PU and the polymer is placed between the surface of the polymer and the surface of a bicomponent PU precursor resin, and pressure is applied to incorporate the plasticizer in the polymer surface and in the polyurethane as it forms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.