Weather resistant plastic composites capped with polyethylene terephthalate glycol (PETG) for outdoor exposures
US6855402B2 · kind B2 · utility
7Cited by
15References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 7, 2002 |
| Grant date | Feb 15, 2005 |
| Priority date | — |
| Expiry date | May 7, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31931
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A composite layered plastic article particularly resistant to outdoor exposure to heat, sunlight and UV degradation comprises a top surface exposed layer of PETG fused to a rigid substrate layer selected from PVC, or CPVC, or HIPS, or ABS, or ASA, or PC. The PETG layer is preferably co-extruded with the substrate layer and heat fused together to produce a laminated layered composite article. The composite layered plastic is particularly useful for color retention of dark colors and bright masstone colors, as well as pastel and white colors
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.