公开(公告)号：US20240399686A1

公开(公告)日：2024-12-05

申请号：US18678966

申请日：2024-05-30

Applicant: Alcon Inc.

Inventor： Zahra Bassampour ,  Steve Yun Zhang ,  Lilanni Perez ,  Ashanti Smith ,  Nicholas Gober ,  Ya-Wen Chang ,  Newton T. Samuel ,  Richard Charles Breitkopf

IPC: B29D11/00 ,  B29K23/00 ,  B29K83/00 ,  B29K105/00 ,  B29K105/20 ,  G02C7/04

Abstract: The invention provides a method for producing delamination-resistant embedded contact lenses involving use of a mold set in two-curing steps and a special lens-forming composition for forming a bulk hydrogel material for embedding a crosslinked polymeric insert. The mold set consists of three mold halves, one of which is used twice, the first time for molding an insert from an insert-forming composition and the second time for an embedded contact lens with the molded insert embedded therein from the special lens-forming composition that a vinylic crosslinking agent and or organic solvent both of which independent of each other can swell an insert by a moderate swelling degree. The resultant embedded hydrogel contact lenses can be free of deformation and delamination.