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US 11,597,874 B2Granted
Photochromic curable composition
AssigneeTokuyama Corporation
InventorsAyako Ohara, Junji Takenaka, Junji Momoda
Life of this patent
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Abstract
A photochromic curable composition comprising a radically polymerizable monomer having at least one oxetanyl group in one molecule, a photochromic compound and radically polymerizable monomers other than the above polymerizable monomer, and a photochromic cured body obtained by polymerizing the photochromic curable composition.
Claims6
A photochromic curable composition comprising (A) a radically polymerizable monomer having at least one oxetanyl group in one molecule, (B) a photochromic compound and (C) radically polymerizable monomers other than the component (A),
- wherein an amount of the photochromic compound (B) is 1 to 400 parts by mass based on 100 parts by mass of the component (A),
- wherein an amount of the component (A) is 0.1 to 5 parts by mass based on 100 parts by mass of the total of the component (C),
- wherein an amount of the photochromic compound (B) is 0.001 to 10 parts by mass based on 100 parts by mass of the total of the component (C),
- wherein the component (A) is represented by the following formula (3);
- in the above formula, R6 is a hydrogen atom or methyl group, R7 and R8 are each independently a linear or branched alkylene group having 1 to 4 carbon atoms, R9 is a linear or branched alkyl group having 1 to 4 carbon atoms, and “e” and “f” are each an average value of 0 to 20.
2 more elements
Dependencies are inferred from the claim text.