公开(公告)号：US10829574B2

公开(公告)日：2020-11-10

申请号：US16807844

申请日：2020-03-03

Applicant: Alcon Inc.

Inventor： Frank Chang ,  Troy Vernon Holland ,  Feng Jing ,  Ryan DeSousa

IPC: C08F28/02 ,  G02B1/04 ,  C08F8/34 ,  C08F8/48 ,  C08F8/30 ,  C08B37/00 ,  C08F24/00 ,  C08F26/06 ,  C08F20/56 ,  G02C7/04

Abstract: The invention is related to a class of hydrophilic copolymers comprising loosely dangling thiol-containing pendant groups. The hydrophilic copolymers are highly reactive towards azetidinium groups of an azetidinium-containing polymer upon heating and can find particular use in for producing water-soluble highly-branched hydrophilic polymeric material useful for producing water gradient contact lenses.

公开(公告)号：US10906258B2

公开(公告)日：2021-02-02

申请号：US16114528

申请日：2018-08-28

Applicant: Alcon Inc.

Inventor： Troy Vernon Holland ,  Frank Chang ,  Ryan DeSousa

IPC: B29D11/00 ,  C08F16/06 ,  G02B1/04 ,  B29K105/24 ,  B29K105/00 ,  B29K29/00

Abstract: Described herein is a cast-molding process for producing contact lenses in a relatively short curing time. The short curing time has been achieved by adding a chain transfer agent into a lens-forming composition.