Retroreflective articles
US10545268B2 · kind B2 · utility
1Cited by
34References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2015 |
| Grant date | Jan 28, 2020 |
| Priority date | — |
| Expiry date | Jan 3, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2551/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Retroreflective articles include a layer of optical elements, and a bead bond layer (140). The optical elements include transparent microspheres (110), a transparent polymeric polyurethane layer (120), and at least one reflective layer (130), where the transparent polymeric polyurethane layer (120) comprises a dried layer prepared from an aqueous polyurethane dispersion. The retroreflective articles have improved wash durability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.