Invention Grant
- Patent Title: Photochromic polyurethane laminate
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Application No.: US14563985Application Date: 2014-12-08
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Publication No.: US10052849B2Publication Date: 2018-08-21
- Inventor: Xuzhi Qin , Hideyo Sugimura , Michael S. Boulineau
- Applicant: Vision Ease, LP
- Applicant Address: US MN Ramsey
- Assignee: Vision Ease, LP
- Current Assignee: Vision Ease, LP
- Current Assignee Address: US MN Ramsey
- Agency: Inskeep IP Group, Inc.
- Main IPC: G02B5/23
- IPC: G02B5/23 ; B32B37/00 ; G02C7/06 ; B29D11/00 ; B32B38/00 ; G02C7/10 ; G02B1/04 ; B32B27/08 ; B32B23/00 ; B32B27/36 ; B32B27/30 ; B32B27/20 ; B32B27/32 ; B32B27/18 ; B32B27/40 ; C08G18/10 ; C08G18/42 ; C08G18/75 ; C08K5/00 ; C08L75/04 ; B32B37/24 ; G02B5/22 ; C08J5/18 ; B29K75/00 ; B29K101/00 ; B29K105/00 ; B32B38/16 ; B29K69/00 ; B29K675/00

Abstract:
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.
Public/Granted literature
- US20150098057A1 Photochromic Polyurethane Laminate Public/Granted day:2015-04-09
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