| CPC C09D 171/00 (2013.01) [C08G 65/007 (2013.01); C08G 65/336 (2013.01); C08G 77/46 (2013.01); C09D 133/06 (2013.01); C09D 163/00 (2013.01); C09D 175/04 (2013.01); C08G 77/18 (2013.01); C08G 77/24 (2013.01); C08G 2650/48 (2013.01)] | 19 Claims |
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1. A fluorine-containing curable composition comprising
a curable component (A), which is formed into a cured product by heat or moisture, including at least one compound selected from compounds having a hydrolyzable silyl group, a silanol group, a hydroxyl group, a carboxyl group, an amino group, an epoxy group, a mercapto group, an isocyanate group or a carboxylic anhydride group, with proviso that a compound having a hydrolyzable silyl group is free of a fluorine atom in the molecule, or, a resin composition selected from a urethane resin composition, an epoxy resin composition, a melamine resin composition, an alkyd resin composition or a silicone resin composition, containing at least one selected from the above compounds; and
a surface modification component (B) containing a perfluoropolyether compound (b1) of the following general formula (1), the surface modification component (B) containing 0.005 to 50 parts by weight of the perfluoropolyether compound (b1) per 100 parts by weight of the curable component (A) excluding volatile components:
[McRbSi—Z2]a—Q1—Z1—Rf—Z1—Q1—[Z2—SiRbMc]a (1)
wherein Rf is a divalent perfluoropolyether group having a numerical average molecular weight of 1,500 to 20,000;
each Z1 is independently a divalent linking group, optionally contains an oxygen atom, a nitrogen atom, a fluorine atom or a silicon atom, and may be a group having a cyclic structure and/or an unsaturated bond;
each Z2 is independently a divalent hydrocarbon group having 2 to 20 carbon atoms, may have a cyclic structure, and optionally contains an intermediate ether bond (—O—);
each Q1 is independently a linking group with a valence of (a+1), has a structure with two or more of a hydrogen atom, a carbon atom, an oxygen atom, a silicon atom and a nitrogen atom, and may have a ring shape;
each a is independently an integer of 1 to 10, each b is independently an integer of 0 to 2, each c is independently an integer of 1 to 3, and b and c on one silicon atom satisfy b+c=3; all “a” number of Z2 in the square bracket in formula (1) are bonded to the silicon atom in the Q1 structure;
each R is independently a monovalent hydrocarbon group having 1 to 6 carbon atoms; and
each M is independently a group selected from the group consisting of an alkoxy group having 1 to 10 carbon atoms, an alkoxyalkyl group having 2 to 10 carbon atoms, an alkoxyalkoxy group having 2 to 10 carbon atoms, an acyloxy group having 1 to 10 carbon atoms, an alkenyloxy group having 2 to 10 carbon atoms, and a halogen group, and
wherein the surface modification component (B) further contains a non-functional perfluoropolyether compound (b2) of the following general formula (2) at less than 5 mol % per a total of 100 mol % of the perfluoropolyether compound (b1) of general formula (1) and the component (b2), the total amount of the component (b1) and the component (b2) in the surface modification component (B) is 0.005 to 50 parts by weight per 100 parts by weight of the curable component (A) excluding volatile components, and the content of a fluorine-containing solvent having a boiling point of 260° C. or lower at normal pressure is less than 1% by weight with respect to the entire component (B):
F—Rf′—F (2)
wherein Rf′ is a divalent perfluoropolyether group having a numerical average molecular weight of 1,500 to 20,000.
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