公开(公告)号：US20230375751A1

公开(公告)日：2023-11-23

申请号：US18364412

申请日：2023-08-02

Applicant: HOYA Optical Labs Of America, Inc.

Inventor： Hannah Vu ,  Hideyo Sugimura ,  Ping Fan ,  Hao Vu

IPC: G02B1/04 ,  C08G18/75 ,  C08G18/42 ,  B32B27/40 ,  C08G2/10 ,  C08G18/32 ,  C08G18/10 ,  G02B5/23 ,  G02C7/10

CPC classification number: G02B1/041 ,  C08G18/758 ,  C08G18/4277 ,  B32B27/40 ,  C08G2/10 ,  C08G18/3206 ,  C08G18/10 ,  G02B5/23 ,  G02C7/102 ,  Y10T428/31551

Abstract: A photochromic polyurethane laminate wherein the photochromic polyurethane layer of the laminate has been crosslinked with an isocyanate-active prepolymer using a crosslinking agent. The crosslinking agent is formulated to have at least three functional groups that are reactive with functional groups of the polyurethane or of the isocyanate-active prepolymer. A method of making the photochromic polyurethane laminate includes steps of causing the crosslinking.

公开(公告)号：US11754752B2

公开(公告)日：2023-09-12

申请号：US17516619

申请日：2021-11-01

Applicant: HOYA OPTICAL LABS OF AMERICA, INC.

Inventor： Hannah Vu ,  Hideyo Sugimura ,  Ping Fan ,  Hao Vu

IPC: G02B1/04 ,  C08G18/75 ,  C08G18/42 ,  B32B27/40 ,  C08G2/10 ,  C08G18/32 ,  C08G18/10 ,  G02B5/23 ,  G02C7/10

CPC classification number: G02B1/041 ,  B32B27/40 ,  C08G2/10 ,  C08G18/10 ,  C08G18/3206 ,  C08G18/4277 ,  C08G18/758 ,  G02B5/23 ,  G02C7/102 ,  Y10T428/31551 ,  C08G18/10 ,  C08G18/3206 ,  C08G2/10 ,  C08G18/3206

Abstract: A photochromic polyurethane laminate wherein the photochromic polyurethane layer of the laminate has been crosslinked with an isocyanate-active prepolymer using a crosslinking agent. The crosslinking agent is formulated to have at least three functional groups that are reactive with functional groups of the polyurethane or of the isocyanate-active prepolymer. A method of making the photochromic polyurethane laminate includes steps of causing the crosslinking.