公开(公告)号：US11420426B2

公开(公告)日：2022-08-23

申请号：US15256351

申请日：2016-09-02

申请人： HOYA OPTICAL LABS OF AMERICA, INC.

发明人： Xuzhi Qin ,  Hideyo Sugimura ,  Michael Boulineau

IPC分类号： B32B27/08 ,  B32B23/00 ,  B32B27/36 ,  B32B27/30 ,  B32B27/20 ,  B32B27/32 ,  B32B27/18 ,  C08G18/10 ,  C08G18/42 ,  C08G18/75 ,  C08K5/00 ,  C08L75/04 ,  G02B1/04 ,  B32B27/40 ,  B29D11/00 ,  B32B37/00 ,  B32B37/24 ,  B32B38/00 ,  G02B5/23 ,  G02C7/06 ,  G02C7/10 ,  G02B5/22 ,  C08J5/18 ,  C08L75/06 ,  C08L75/12 ,  B29K75/00 ,  B29K101/00 ,  B29K105/00 ,  B32B38/16 ,  B29K69/00 ,  B29K675/00

摘要： A photochromic polyurethane laminate that is constructed to solve certain manufacturing difficulties involved in the production of plastic photochromic lenses is disclosed. The photochromic laminate includes at least two layers of a resinous material and a photochromic polyurethane layer that is interspersed between the two resinous layers and which contains photochromic compounds. The polyurethane layer is formed by curing a mixture of a solid thermoplastic polyurethane, at least one isocyanate prepolymer, at least one photochromic compound, and a stabilizing system.