Coating composition and optical article
AssigneeTokuyama Corporation
InventorsKatsuhiro Mori, Junji Momoda
Life of this patent
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Abstract
There is provided a coating composition which can be applied to a substrate such as a plastic lens so as to form a photochromic coating layer having good photochromic properties and excellent adhesion to the substrate on the surface of the substrate. This composition comprises, for example, as monomer components, 0.1 to 20 wt % of monomer having a group which produces a silanol group through hydrolysis such as γ-methacryloyloxypropyltrimethoxysilane and 0.1 to 50 wt % of monomer having at least one oxycarbonyl group in a molecule. The composition can further contain a maleimide compound as a monomer component and further desirably contains an amine compound.
Claims9
A coating composition comprising:
- 100 parts by weight of radical polymerizable monomer which comprises:
- (A1) 0.1 to 20 wt % of at least one radical polymerizable monomer selected from the group consisting of a radical polymerizable monomer having a silanol group or a group which produces a silanol group through hydrolysis and a radical polymerizable monomer having an isocyanate group,
- (B1) 0.1 to 50 wt % of radical polymerizable monomer other than the component (A1), said component (B1) selected from the group consisting of compounds represented by the following formula (7), compounds represented by the following formula (10), and hydroxypivalic acid neopentylglycol diacrylate,
- wherein R13 is an alkylene group having 1 to 10 carbon atoms which may have a substituent, R14 is a hydrogen atom or a methyl group, R15 is hydrogen or an alkyl group having 1 to 10 carbon atoms which may have a substituent, X is a divalent organic residue, q is 1 or 2, and q′ is 0 or 1, provided that q+q′=2,
- wherein R21 is a hydrogen atom or a methyl group, R22 and R23 are each independently an alkylene group having 1 to 10 carbon atoms, V is a hydrogen atom or a group represented by the following formula (11):
- —R24—U (11)
- wherein R24 is an alkylene group having 1 to 10 carbon atoms, and U is an alkyl group having 1 to 10 carbon atoms, a hydrogen atom, a benzene ring or a (meth)acryloyloxy group, and r is an integer of 1 to 10, and
- (C1) 30 to 99.8 wt % of another radical polymerizable monomer different from the components (A1) and (B1),
- (D1) 0.01 to 20 parts by weight of photochromic compound, and
- either no amine compound or up to 20 parts by weight of amine compound.
A coating composition comprising:
- 100 parts by weight of radical polymerizable monomer mixture which comprises:
- (A2) 0.01 to 20 wt % of maleimide compound, and
- (B2) 80 to 99.99 wt % of another radical polymerizable compound different from the component (A2),
- (D1) 0.01 to 20 parts by weight of photochromic compound, and
- either no amine compound or up to 20 parts by weight of amine compound.
Dependencies are inferred from the claim text.