Patent ID: 11865817
Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
Field: Surface technology, coating (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A thermoplastic multilayer article comprising:
a polycarbonate substrate comprising a polycarbonate composition comprising at least one of a polycarbonate homopolymer, a copolycarbonate, or a polycarbonate copolymer, the polycarbonate substrate having a first surface and an opposing second surface; and
a first polyurethane layer laminated or coextruded on at least a portion of the first surface of the polycarbonate substrate, the first polyurethane layer comprising a first aliphatic thermoplastic polyurethane and a polyurethane UV stabilizer,
wherein the first aliphatic thermoplastic polyurethane comprises first segments formed via a reaction of caprolactone and an aliphatic isocyanate, and second segments formed via a reaction of a chain extender and the aliphatic isocyanate
wherein the thermoplastic multilayer article exhibits a cross hatch tape test rating of GTO based on ASTM D3359-09; and
after a sand trickling test according to DIN 52348 conducted on the first polyurethane layer for 5 cycles, the thermoplastic multilayer article has a delta haze of less than 5% determined according to ASTM D-1003-00, Procedure A, under D65 illumination, with a 10 degrees observer using a Haze-Gard test device.