Photochromic compositions and light transmissible articles
AssigneePolymers Australia Pty Limited
InventorsRichard Alexander Evans, Melissa Ann Skidmore, Lachlan Hartley Yee, Tracey Lee Hanley, David Andrew Lewis
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Abstract
The invention related to a photochromic polymeric composition comprising a polymer matrix and a photochromic compound which is an adduct comprising a photochromic moiety and at least one pendant oligomer group to provide a rate of fade of the photochromic polymeric composition which is significantly changed when compared with the corresponding composition comprising the photochromic compound without said pendent oligomer. The invention also relates to a photochromic compound which is an adduct comprising a photochromic moiety and at least one pendent oligomer.
Claims36
A photochromic polymeric composition comprising a polymer matrix and a photochromic compound which is an adduct comprising a photochromic moiety and at least one pendent group comprising at least one oligomer selected from the group consisting of polyether oligomers, polyalkylene oligomers, polyfluoroalkylene oligomers, polyfluoroalkylenyloxy oligomers, polydi(C1 to C10 hydrocarbyl)siloxane oligomers, polysilicene acid oligomers and derivatives thereof, poly(ZSi(OH)3) oligomers and derivatives thereof, poly (ZSiCl3) oligomers and derivatives thereof, poly(ZSi(OMe)3) and mixtures thereof wherein Z is an organic group, wherein the photochromic compound is not reactive with the matrix so that it does not become covalently tethered to the polymer matrix.
A photochromic polymeric composition comprising a polymer matrix and a photochromic compound which is an adduct comprising a photochromic moiety and at least one pendent group comprising at least one oligomer selected from the group consisting of polyalkylene oligomers, polyfluoroalkylene oligomers, polydi(C1 to C10 hydrocarbyl)siloxane oligomers and mixtures thereof.
A photochromic composition comprising a polymer matrix and a photochromic compound which is an adduct comprising a photochromic moiety and at least one pendent oligomer comprising a polydi(C1 to C4 alkyl)siloxane oligomer.
Dependencies are inferred from the claim text.