Masking film
US5491032A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 16, 1994 |
| Grant date | Feb 13, 1996 |
| Priority date | — |
| Expiry date | Feb 16, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31909
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to a masking film consisting of one or more layers, to use when selectively lacquering parts of a surface, in particular of cars, with a polar outer layer. According to the invention the polar outer layer is usually a layer made from a polymer or copolymer or terpolymer, which is of itself permanently polar, without any pre- or post-treatment. Preferably the polar outer layer is an ionomer layer, formed from the reaction product of an acidic copolymer or an acidic terpolymer and a metal salt, and preferably from the reaction product of ethylene acrylic acid or ethylene methacrylic acid on the one hand and a sodium or zinc salt on the other hand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.