Microsphere-coated polyurethane articles and methods of making the same
US12122127B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2020 |
| Grant date | Oct 22, 2024 |
| Priority date | — |
| Expiry date | Jun 1, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2605/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Described herein is a multilayered article (10) and methods of making and using such articles. The multilayered article (10) comprises: ⋅(a) a microsphere layer (11) comprising a plurality of microspheres disposed in a monolayer; ⋅(b) a bead bonding layer (12) comprising a first major surface and a second opposing major surface and the plurality of microspheres is partially embedded in the first major surface of the bead bonding layer, and comprises a thermoset polyurethane having a glass transition temperature of at least 35° C.; ⋅(c) a primer layer (14) disposed on the second major surface of the bead bonding layer wherein the primer layer comprises a copolymer of polyurea and polyurethane and wherein the primer layer is covalently attached to the bead bonding layer via urea linkages; and ⋅(d) an elastomeric layer (16) disposed on the primer layer opposite the bead bonding layer, wherein the elastomeric layer comprises a polyurethane thermoplastic elastomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.