25-01-2018 дата публикации
Номер: US20180022838A1
Принадлежит:
An object of the present invention is to provide a photocurable composition from which a cured product having high concealing property is obtained by irradiation with an active energy ray such as ultraviolet ray, and which inhibits color fading of the cured product in a high temperature and high humidity (85 C and 85% RH) environment or a high temperature (100 C) environment. 1. A photocurable composition comprising the following components (A) to (D):component (A): a leuco dye;{'sub': a', '6-a', 'b', '6-b', 'c', '4-c, 'sup': −', '−', '−, 'component (B): a salt having an anion selected from the group consisting of [P(Rf)F], [Sb(Rf)F] and [B(Rf)F] (in the formulae, Rf represents a fluoroalkyl group having 1 to 20 carbon atoms, a and b each independently represent an integer of from 1 to 5, and c represents an integer of from 1 to 3);'}component (C): a radical polymerizable compound; andcomponent (D): a photoradical initiator.2. The photocurable composition according to claim 1 , wherein{'sub': a', '6-a, 'sup': '−', 'the component (B) is a salt having an anion represented by [P(Rf)F] (in the formula, Rf represents a fluoroalkyl group having 1 to 20 carbon atoms and a represents an integer of from 1 to 5).'}3. The photocurable composition according to claim 1 , whereinthe component (B) is a salt having a cation selected from the group consisting of an aryliodonium cation, an aryl sulfonium cation, and an aryldiazonium cation.4. The photocurable composition according to claim 1 , whereinthe component (B) is a salt having an aryl sulfonium cation.5. The photocurable composition according to claim 1 , wherein{'sub': a', '6-a', '3', '2', '3', '3', '3', '2', '2', '2', '4', '3', '2', '2', '3', '3', '3', '2', '2', '2', '2', '4', '3', '2', '2', '2', '3', '3, 'sup': −', '−', '−', '−', '−', '−, '[P(Rf)F] of the component (B) is an anion selected from the group consisting of [(CFCF)PF], [(CFCFCF)PF], [(CFCFCF)PF], [(CFCFCFCF)PF], and [(CFCFCFCF)PF].'}6. The photocurable ...
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