Photochromic Polymer and Composition Comprising Photochromic Polymer
申请人:Evans Richard Alexander
公开号:US20110147681A1
公开(公告)日:2011-06-23
A photochromic polymer comprising at least one siloxane oligomer and at least two photochromic groups covalently linked to one or both terminuses of the siloxane oligomer and compositions containing photochromic siloxane polymers with narrow polydispersity. The photochromic polymer enhances switching speed in rigid host polymers.
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.
A photochromic polymer comprising at least two photochromic moieties linked by a straight or branched chain polymer selected from the group consisting of poly(C2 to C4 alkylene oxide), poly[C
1
to C
10
alkoxy substituted (C
2
to C
4
alkylene oxide)] and poly[C
1
to C-
15
acyloxy substituted (C
2
to C
4
alkylene oxide)].
Photochromic polymer and composition comprising photochromic polymer
申请人:Evans Richard Alexander
公开号:US08865029B2
公开(公告)日:2014-10-21
A photochromic polymer comprising at least one siloxane oligomer and at least two photochromic groups covalently linked to one or both terminuses of the siloxane oligomer and compositions containing photochromic siloxane polymers with narrow polydispersity. The photochromic polymer enhances switching speed in rigid host polymers.
Photochromic polymer compositions and articles thereof
申请人:——
公开号:US20030141490A1
公开(公告)日:2003-07-31
Described is a photochromic polymer composition including the reaction product of at least one polymerizable photochromic material and at least one other copolymerizable material having a glass transition temperature of less than 23° C. upon polymerization. The photochromic polymer composition is adapted to provide an increased Fade Half Life in the Photochromic Polymer Performance Test as compared to the same photochromic compound used in the reaction product, but free of polymerizable groups. Also described are photochromic articles including the photochromic polymer composition.