Foam including surface-modified nanoparticles
Assignee3M Innovative Properties Company
InventorsBrant U. Kolb, Jimmie R. Baran, Jr., Michael A. Johnson, Gordon G. Johnson, Megan P. Lehmann, John S. Sokalski
Life of this patent
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Abstract
A foam composition that includes a vehicle and surface-modified nanoparticles disposed in the vehicle. The individual nanoparticles having a particle diameter of less than about 100 nanometers.
Claims63
A foam composition comprising:
- a vehicle;
- and
- surface-modified nanoparticles disposed in said vehicle, said individual nanoparticles having a particle diameter of less than about 100 nanometers.
A method of making a foam composition, said method comprising introducing a foaming agent into a composition in an amount sufficient to form voids in said composition, said composition comprising a vehicle and surface-modified nanoparticles disposed in said vehicle, said surface-modified nanoparticles having a particle diameter of no greater than about 100 nanometers.
A method of making a tape, said method comprising:
- substantially simultaneously
- a) foaming a composition comprising
- a vehicle, and
- a plurality of surface-modified nanoparticles having an particle diameter of less than about 100 nanometers;
- and
- b) coating said composition on a substrate.
A method of determining compatibility of a predetermined vehicle and surface-modified nanoparticles, said method comprising:
- a) selecting surface-modified nanoparticles having a particle diameter of less than about 100 nanometers;
- b) combining said surface-modified nanoparticles and said vehicle to form a composition;
- and
- c) introducing a foaming agent into said composition,
- wherein if said composition forms a persistent foam, said surface-modified nanoparticles are compatible with said vehicle.
A method of determining compatibility of a predetermined vehicle and surface-modified nanoparticles, said method comprising:
- a) selecting surface-modified nanoparticles having a particle diameter of less than about 100 nanometers:
- and
- b) combining said surface-modified nanoparticles and said vehicle to form a composition,
- wherein, if said surface-modified nanoparticles appear to dissolve in said vehicle, said surface-modified nanoparticles are compatible with said vehicle.
A method for selecting compatible surface-modified nanoparticles for a predetermined vehicle, said method comprising
- selecting surface-modified nanoparticles having a particle diameter of less than about 100, nanometers and comprising attached surface groups, said surface groups having a solubility parameter substantially similar to the solubility parameter of the predetermined vehicle;
- dispersing said surface-modified nanoparticles in a vehicle;
- and
- foaming said vehicle,
- wherein the presence of a persistent foam indicates that the surface- modified nanoparticles are compatible with the vehicle.
Dependencies are inferred from the claim text.