Composite materials containing nanoparticles and their use in chromatography
AssigneeWaters Technologies Corporation
InventorsKevin D. Wyndham, Nicole L. Lawrence
Life of this patent
Estimating the term…
Abstract
Novel porous materials comprising nanoparticles, use in chromatographic separations, processes for its preparation, and separations devices containing the chromatographic material are described by the instant invention. In particular, the disclosure describes porous inorganic/organic hybrid particles embedded with nanoparticles selected from oxides or nitrides of the following: silicon carbide, aluminum, diamond, cerium, carbon black, carbon nanotubes, zirconium, barium, cerium, cobalt, copper, europium, gadolinium, iron, nickel, samarium, silicon, silver, titanium, zinc, boron, and mixtures thereof.
Claims22
A method of preparing a composite material comprising dispersing one or more types of nanoparticles within a polyoligomeric organosiloxane to form a dispersion mixture, and condensing the dispersion mixture hydrolytically, such that a composite material is prepared, the composite material comprising a nanoparticle dispersed within an inorganic or hybrid material derived from one or more components selected from the group consisting of an organic repeat unit;
- an organosilyl repeat unit;
- and an inorganic repeat unit, wherein the composite material is represented by the following formula
- Np/(A)w(B)x(C)y
- wherein:
- w, x, and y are each independently a positive number ranging from 0 to 1, such that w+x+y=1;
- Np represents the nanoparticle, the nanoparticle comprising one or more moieties selected from silicon carbide, diamond, cerium, carbon black, carbon nanotubes, aluminum, zirconium, barium, cobalt, copper, europium, gadolinium, iron, nickel, samarium, silver, titanium, zinc, boron, oxides thereof, and nitrides thereof;
- A represents the organic repeat unit;
- B represents the organosilyl repeat unit;
- C represents the inorganic repeat unit;
- and
- wherein each repeat unit is covalently bonded to one or more separate repeat units A, B, or C.
Dependencies are inferred from the claim text.