Photochromic compositions and articles comprising siloxane, alkylene or substituted alkylene oligomers
First Claim
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1. A polymerizable composition for forming a photochromic article of 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 oligomeric group having at least one group reactive with the monomer component during curing wherein the oligomer group comprises a multiplicity of monomer units selected from siloxane, alkylene and substituted alkylene.
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Abstract
This invention relations to a polymerizable composition for forming a photochromic article of glass transition temperature of at least 50 ° C. on curing, the composition comprising: (a) a polymerizable composition comprising a monomer component or resin formed therefrom; and (b) a photochromic dye monomer comprising a photochromic moiety and at least one oligomeric group having at least one group reactive with the monomer component during or following curing wherein the oligomer group comprises a multiplicity of monomer units selected from siloxane, alkylene and substituted alkylene.
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Citations
37 Claims
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1. A polymerizable composition for forming a photochromic article of 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 oligomeric group having at least one group reactive with the monomer component during curing wherein the oligomer group comprises a multiplicity of monomer units selected from siloxane, alkylene and substituted alkylene. - 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, 28, 29, 30, 34, 35, 36)
- C., on curing the composition comprising;
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31. A photochromic article having a Tg of at least 50°
- C. 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 3 monomeric units selected from the group consisting of alkylene, substituted alkylene and di-(hydrocarbyloxy)siloxane.
- View Dependent Claims (32, 33)
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37. A polymerizable composition for forming a photochromic article of glass transition temperature of at least 50°
- C. on curing, the composition comprising;
(a) a polymerizable composition comprising a monomer component or resin formed therefrom; and
(b) a photochromic dye monomer comprising a photochromic moiety and at least one oligomeric group having at least one group reactive with the monomer component during or following curing wherein the oligomer group comprises a multiplicity of monomer units selected from siloxane, alkylene and substituted alkylene.
- C. on curing, the composition comprising;
Specification