Photochromic materials derived from ring-opening monomers and photochromic initiators

US7465415B2 · kind B2 · utility

Assignee

• PPG Industries Ohio, Inc. · US

Inventors

• Feng Wang · Export, US
• Barry Van Gemert · Massillon, US
• Kevin J. Stewart · Murrysville, US
• Carol L. Knox · Monroeville, US
• Anu Chopra · Pittsburgh, US
• Patrick M. Brown · Exton, US

Key dates

• Filing date: Jul 30, 2004
• Grant date: Dec 16, 2008
• Expiry date: Aug 11, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D311/92
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Various non-limiting embodiments disclosed herein related to photochromic materials comprising the reaction product of (a) at least one ring-opening cyclic monomer, and (b) a photochromic initiator. Other non-limiting embodiments related to photochromic materials represented by:wherein S′ comprises the at least one ring-opened cyclic monomer as set forth herein. Other non-limiting embodiments related to photochromic compositions, optical elements, and methods of inhibiting migration of a photochromic material in a polymeric material using the photochromic materials disclosed herein. Methods of making such photochromic materials, compositions, and optical elements are also disclosed.