Retroreflective article having launderably durable bead-bond
US5976669A · kind A · utility
41Cited by
25References
29Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1996 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Dec 20, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31601
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A retroreflective article (10) has retroreflective elements (12) partially embedded in a binder layer (14) that contains a solid polyurethane. The polyurethane includes soft segments, hard segments, silicon moieties, and urethane moieties. The specific chemical identities and relative amounts of the segments and moieties are sufficient to impart desired high elongation and low modulus to the polymer. The inventive retroreflective article is capable of demonstrating extraordinary laundering durability under industrial wash conditions and tumble and tunnel drying.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.