申请人:SHIN-ETSU CHEMICAL CO., LTD.
公开号:US20200231608A1
公开(公告)日:2020-07-23
An object of the present invention is to provide a monomer having a polysiloxane structure and capable of providing a polymer having sufficient compatibility and hydrolysis resistance while having high oxygen permeability useful for an ophthalmic device, and a method for producing the monomer.
The present invention provides a siloxane compound represented by the formula (1) which has a radical-polymerizable group at one terminal and an alkyl group having 1 to 10 carbon atoms at the other terminal, and has a divalent hydrocarbon group L which has 2 to 20 carbon atoms and may contain one or more selected from an ether bond and a urethane bond, wherein a part of hydrogen atoms bonded to the carbon atoms may be substituted with a hydroxyl group. The siloxane compound further has a hydrophilic group represented by formula (3) bonded to a silicon atom in the siloxane chain.
本发明的一个目的是提供一种具有多聚硅氧烷结构并能够提供具有足够相容性和耐水解性的聚合物的单体,同时具有高透氧性,适用于眼科器械,并提供一种生产该单体的方法。本发明提供了一种硅氧烷化合物,其由式(1)表示,其中在一个端部具有一个基团可聚合的基团,另一端部具有1到10个碳原子的烷基基团,并具有一个具有2到20个碳原子的二价碳氢基团L,可能包含一个或多个由醚键和脲键选择的,其中与碳原子结合的氢原子的部分可以被氢氧基取代。该硅氧烷化合物进一步具有由式(3)表示的亲水基团,与硅氧烷链中的硅原子结合。