Microsphere-coated polyurethane articles and methods of making the same
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United States of America Patent
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Oct 22, 2024
Grant Date -
Jul 14, 2022
app pub date -
May 13, 2020
filing date -
May 17, 2019
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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.
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