Photocurable silicone composition, adhesive, and silicone cured material
A photocurable silicone composition, containing: (A) an organopolysiloxane having at least one specific structure having a (meth)acryl group in the molecule; (B) an organohydrogenpolysiloxane having at least two hydrogen atoms bonded to a silicon atom in one molecule; (C) a photo-radical polymerization initiator; and (D) a platinum-group metal catalyst to be activated by light having a wavelength of 200 to 500 nm. The photocurable silicone composition has good storability, and good surface curability and deep-part curability in the air; an adhesive consisting of this photocurable silicone composition; and a cured material of this photocurable silicone composition.
1 . A photocurable silicone composition, comprising:
(A) an organopolysiloxane represented by the following general formula (2),
wherein “p” represents an integer of 10 or more, “g” and “r” represent an integer of 0 to 3, “q+r” represents an integer of 1 to 6, Z 3 each represents a substituted or unsubstituted divalent hydrocarbon group having 1 to 10 carbon atoms being same as or different from each other, R 2 each represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms being same as or different from each other, and R 3 represents a structure represented by the following general formula (1);
wherein “m” represents any of 0, 1, and 2, R 1 each represents a hydrogen atom or a methyl group being same as or different from each other, R 2 each represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms being same as or different from each other, Z 1 each represents a divalent hydrocarbon group having 1 to 10 carbon atoms being same as or different from each other and optionally having an oxygen atom in a chain, Z 2 represents an oxygen atom or a substituted or unsubstituted divalent hydrocarbon group having 1 to 10 carbon atoms, and a broken line represents a bond;
(B) an organohydrogenpolysiloxane having at least two hydrogen atoms bonded to a silicon atom in one molecule;
(C) a photo-radical polymerization initiator; and
(D) a platinum-group metal catalyst to be activated by light having a wavelength of 200 to 500 nm.
2 . The photocurable silicone composition according to claim 1 , wherein the Z 1 represents an alkylene group having 1 to 6 carbon atoms, and the Z 2 represents an oxygen atom.
3 . An adhesive, consisting of the photocurable silicone composition according to claim 1 .
4 . An adhesive, consisting of the photocurable silicone composition according to claim 2 .
5 . A silicone cured material, comprising a cured material of the photocurable silicone composition according to claim 1 .
6 . A silicone cured material, comprising a cured material of the photocurable silicone composition according to claim 2 .