Light transparent body of coextruded synthetic resin
US4477521A · kind A · utility
21Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1982 |
| Grant date | Oct 16, 1984 |
| Priority date | — |
| Expiry date | Apr 12, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
What is disclosed is a light-transparent body comprising a first coextruded layer of a first extrudable light-transparent synthetic resin and a second coextruded layer of a second extrudable light-transparent synthetic resin different from said first resin, wherein said first and second coextruded layers are adjacent and wherein at least said first layer contains a dyestuff capable of fluorescing in the visible region and said second, adjacent, layer is free of the dyestuff present in said first layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.