Photochromic Compositions and Articles Comprising Polyether Oligomer
First Claim
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1. A polymerizable composition for forming a photochromic article having a glass transition temperature of at least 50°
- C. on curing the composition comprising;
(a) a polymerizable composition comprising a monomer component; and
(b) a photochromic dye monomer comprising a photochromic moiety and at least one oligomer group having at least one group reactive with the monomer component during curing wherein the oligomer group comprises at least seven polyether monomer units selected from alkyleneoxy and haloalkyleneoxy.
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Abstract
This invention relates to a polymerizable composition for forming a photochromic article having a glass transition temperature of at least 50° C. on curing the composition comprising: (a) a polymerizable composition comprising a monomer component; and (c) a photochromic dye monomer comprising a photochromic moiety and at least one oligomer group having at least one group reactive with the monomer component during curing wherein the oligomer group comprises at least seven polyether monomer units selected from alkylenoxy and haloalkylenoxy.
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33 Claims
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1. A polymerizable composition for forming a photochromic article having a glass transition temperature of at least 50°
- C. on curing the composition comprising;
(a) a polymerizable composition comprising a monomer component; and
(b) a photochromic dye monomer comprising a photochromic moiety and at least one oligomer group having at least one group reactive with the monomer component during curing wherein the oligomer group comprises at least seven polyether monomer units selected from alkyleneoxy and haloalkyleneoxy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 33)
- C. on curing the composition comprising;
- 28. A photochromic article comprising a polymeric matrix formed from a monomer composition comprising a photochromic monomer comprising a photochromic moiety which is tethered to the polymer via a pendant oligomer comprising at least 7 monomeric units selected from the group consisting of alkylenyloxy, and fluoroalkylenyloxy (particularly perfluoroalkylenyloxy).
Specification