Disclosed is a composition comprising a charged particle of volume 5 nm
3
to 50 million nm
3
preferably having an inorganic core of SiO
2
, AI
2
O
3
, and/or TiO
2
, or a core essentially consisting of an organic pigment and/or pigment derivative, and a counter ion which is separable from the particle and is not covalently linked to the particle, said counter ion comprising a silicon atom which is directly bound to a carbon atom. Preferably, said charged particle comprises a dye attached to said inorganic core and said counter ion comprises a (poly)siloxane moiety linked via suitable bridge members to a quaternary, positively charged, nitrogen or phosphorus atom, or to a moiety carrying an anionic functional group. Said composition may be used e.g. in the form of a homogenous dispersion in an electrophoretic display.
Disclosed is a composition comprising a charged particle of volume 5 nm3 to 50 million nm3 preferably having an inorganic core of SiO2, AI2O3, and/or TiO2, or a core essentially consisting of an organic pigment and/or pigment derivative, and a counter ion which is separable from the particle and is not covalently linked to the particle, said counter ion comprising a silicon atom which is directly bound to a carbon atom. Preferably, said charged particle comprises a dye attached to said inorganic core and said counter ion comprises a (poly)siloxane moiety linked via suitable bridge members to a quaternary, positively charged, nitrogen or phosphorus atom, or to a moiety carrying an anionic functional group. Said composition may be used e.g. in the form of a homogenous dispersion in an electrophoretic display.
IONIC COMPOUND, COMPOSITION, CURED MATERIAL, HYDROGEL AND OPHTHALMIC LENS
申请人:Satake Kohsuke
公开号:US20130202551A1
公开(公告)日:2013-08-08
An ionic compound capable of providing a cured material having superior antibacterial property and oxygen permeability, and a composition containing the ionic compound, and a cured material, a hydro gel and an ophthalmic lens which have long-term sustainable antibacterial property and superior oxygen permeability. The ionic compound is represented by the following formula (1):
In formula (1), P represents a polymerizable functional group. Q
+
represents a cationic group: Z represents an n-valent siloxanyl group in which the total atomic weight of a group of constituent atoms is no less than 70 and no greater than 1,000; X
m−
represents an m-valent anion; and n is an integer of 1 to 10, where provided that n is no less than 2, a plurality of P3 and Q
+
3 are each independently as defined above.