Process for treating the surface of a plastic article
US4938998A · kind A · utility
15Cited by
7References
12Claims
0Family size
Inventor
Key dates
| Filing date | Aug 20, 1986 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | Aug 20, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/8305
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A plastic article, especially of polypropylene or polyethylene, can be rendered resistant to diffusion of motor fuel vapors or the like and/or prepared for surface-coating by applying a film of a naturally-occurring, enzymatically-functionalized cellulose derivative having a functional phosphate, sulfate, carbonate or amino group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.