Silicone compound and a use thereof
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsMuneo Kudo, Shoji Ichinohe, Tomoyuki Goto
Life of this patent
Estimating the term…
Abstract
One of the purposes of the present invention is to provide a compound which is a polymerizable monomer having a specific number of silicon atoms and a specific number of fluorine atoms, has a higher purity, is suitable as an ophthalmic monomer, is well compatible with another (meth)acryl monomer, and provides a polymer having excellent hydrophilicity, anti-staining property and durability of mechanical strength and to provide a method for preparing the compound. The present invention provides a compound represented by the following formula (1). Further, the present invention provides a method for preparing the compound, a polymer having repeating units derived from the aforesaid compound and an ophthalmic device composed of the polymer.
Claims16
A compound represented by the following formula (1):
- wherein m is an integer of from 2 to 10, n is an integer of from 1 to 3, k is an integer of 1 or 2, R1 is, independently of each other, an alkyl group having 1 to 6 carbon atoms, R2 is, independently of each other, an alkylene group having 1 to 6 carbon atoms or a fluoroalkylene group having 1 to 6 carbon atoms, R3 is an alkyl group having 1 to 4 carbon atoms, and R4, R5 and R6 are, independently of each other, a hydrogen atom or a methyl group.
A method for preparing a compound represented by the following formula (1):
- wherein m is an integer of from 2 to 10, n is an integer of from 1 to 3, k is an integer of 1 or 2, R1 is, independently of each other, an alkyl group having 1 to 6 carbon atoms, R2 is, independently of each other, an alkylene group having 1 to 6 carbon atoms or a fluoroalkylene group having 1 to 6 carbon atoms, R3 is an alkyl group having 1 to 4 carbon atoms, and R4, R5 and R6 are, independently of each other, a hydrogen atom or a methyl group,
- comprising a step of reacting a silicone compound represented by the following formula (2):
- wherein m, n, R1, R2, R3, R4 and R5 are as defined above;
- with a (meth)acryl group-containing isocyanate compound represented by the following formula (3):
- wherein k and R6 are as defined above.
Dependencies are inferred from the claim text.