Silicone compound having a radical-polymerizable group and a method for the preparation thereof
A silicon compound that contains a radical-polymerizable group. The silicone compound is liquid at room temperature and has good handling properties, has excellent reactivity, and provides a cured product having excellent oxygen permeability. The silicone compound is represented by formula (1): wherein each A is, independently, a divalent hydrocarbon or halohydrocarbon group having 1 to 6 carbon atoms, each B is, independently, a monovalent organosilicone residue having 2 to 20 silicon atoms, and X is a specified type of moiety comprising a monovalent radical-polymerizable group. A method for preparing the silicone compound. The silicone compound is useful for ophthalmic device compositions, coatings, and cosmetic compositions such as skin care cosmetics, hair care cosmetics, antiperspirants, deodorants, makeup cosmetics, and ultraviolet protection cosmetics.
1. A silicone compound represented by the following formula (1):
wherein
A is, independently of each other, a linear or branched divalent hydrocarbon group having 1 to 6 carbon atoms, in which hydrocarbon group one or more of the hydrogen atoms bonded to carbons atoms may optionally be replaced by, correspondingly, one or more halogen atoms,
B is, independently of each other, a monovalent organosilicone residue having 2 to 20 silicon atoms, and
X is a group represented by the following formula (4):
wherein R 1 is a hydrogen atom or a methyl group.
2. The silicone compound according to claim 1 , wherein B is, independently of each other, a group represented by the following formula (2):
wherein R 2 , R 3 and R 4 are, independently of each other, an alkyl group having 1 to 10 carbon atoms or an aryl group having 6 to 12 carbon atoms, b is an integer of from 1 to 3, c is an integer of from 1 to 3, d is an integer of from 0 to 3, g is an integer of from 0 to 10, h is an integer of from 0 to 2, and a is an integer of from 0 to 3, provided that not all of a, h and g are zero.
3. The silicone compound according to claim 2 , represented by the following general formula (6):
wherein R 1 is a hydrogen atom or a methyl group, R 2 and R 4 are, independently of each other, an alkyl group having 1 to 10 carbon atoms, n is an integer of from 1 to 6, m is an integer of from 1 to 6, and e is, independently of each other, 1, 2 or 3.
4. The silicone compound according to claim 3 , wherein both n and m are 3.
5. The silicone compound according to claim 4 , wherein R 1 is a hydrogen atom.
6. A method for preparing a silicone compound represented by the following general formula (1):
wherein
A is, independently of each other, a linear or branched divalent hydrocarbon group having 1 to 6 carbon atoms, in which hydrocarbon group one or more of the hydrogen atoms bonded to carbons atoms may optionally be replaced by, correspondingly, one or more halogen atoms,
B is, independently of each other, a monovalent organosilicone residue having 2 to 20 silicon atoms, and
X is a group represented by the following formula (4):
wherein R 1 is a hydrogen atom or a methyl group,
wherein the method comprises a step of reacting a compound represented by the following formula (8):
Y—Z (8)
wherein Y is a group represented by the following formula (4′):
wherein R 1 is a hydrogen atom or a methyl group and Z is a halogen atom or a group which is reactive with an amine, with a compound represented by the following formula (9):
wherein A and B are as defined above.
7. The method according to claim 6 , wherein
the compound represented by the formula (8) is represented by the following formula (12):
wherein R 1 is a hydrogen atom or a methyl group,
the compound represented by the formula (9) is represented by the following formula (13):
wherein R 2 and R 4 are, independently of each other, an alkyl group having 1 to 10 carbon atoms, n is an integer of from 1 to 6, m is an integer of from 1 to 6, e is, independently of each other, 1, 2 or 3, and
the silicone compound obtained is represented by the following formula (6):
wherein R 1 , R 2 , R 4 , n, m and e are as defined above.
8. The method according to claim 6 or the method according to claim 7 , wherein R 1 is a hydrogen atom.