Patent ID: 11952439
Assignee: B-ONE ORTHO, CORP
Field: Pharmaceuticals (Chemistry)
Classification: CPC C  A | IPC A  C

Claim 0:
1. A crosslinking method for a surface layer of an ultra-high molecular weight polyethylene substrate, wherein the crosslinking method includes:
(1) providing a photoinitiator in the ultra-high molecular weight polyethylene substrate, and diffusing the photoinitiator from a surface of the substrate into the surface layer of the ultrahigh molecular weight polyethylene substrate at a temperature above the melting point of the photoinitiator and below the melting point of the ultra-high molecular weight polyethylene;
(2) exposing the diffused surface layer with ultraviolet light to crosslink the surface layer, thereby forming a surface layer gradient crosslinked ultra-high molecular weight polyethylene, wherein a radiation intensity of the ultraviolet light is ≥100 mW/cm2.