Use of a film based PVDF, PMMA or a blend thereof for covering articles made of a thermoset
US7179863B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2003 |
| Grant date | Feb 20, 2007 |
| Priority date | — |
| Expiry date | Jan 9, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to the use of films, formed from an adhesive layer and a layer (A), for coating articles made of a thermoset, the adhesive layer comprising, by weiqht: 0 to 60 parts of PVDE, 10 to 100 parts of functionalized PMMA, 0 to 50 parts of an acrylic elastomer and 0 to 4 parts of a UV absorber, the total making up 100 parts, the layer (A) comprising, as main constituents, 0 to 100 parts of PVDF per 100 to 0 parts of PMMA, respectively. This film may be manufactured by coextrusion and is then fixed to the thermoset, for example by hot pressing.The invention also relates to an SMC (Sheet Moulding Compound) multilayer structure comprising, in this order: a backing film, a crosslinkable composition (the precursor of the thermoset), the above adhesive layer and the above layer (A).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.