Method for making solid beads
AssigneeQ Chip Limited
InventorsDaniel Palmer, Owen Shadick
Life of this patent
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Abstract
A method of forming solid beads, the method comprising: Providing a first liquid comprising a solute and a solvent Forming liquid droplets of the first liquid Contacting the liquid droplets with a second liquid so as to cause the solvent to exit the droplets, thus forming solid beads, the solute comprising a polymer, the concentration of polymer in the first liquid being at least 7% w/v., the solubility of the solvent in the second liquid being at least 5 g of solvent per 100 ml of second liquid.
Claims32
A method of forming solid beads, the method comprising:
- Providing a first liquid comprising a solute and a solvent;
- Forming liquid droplets of the first liquid;
- Contacting the liquid droplets with a second liquid so as to cause the solvent to exit the droplets, thus forming solid beads;
- the solute comprising a polymer, the concentration of polymer in the first liquid being at least 7% w/v.,
- the solubility of the solvent in the second liquid being at least 5 g of solvent per 100 ml of second liquid, ‘w’ being the weight of the polymer and ‘v’ being the volume of the solvent.
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A method of forming solid beads having a coefficient of variation of greatest dimension of 0.1 or less, the method comprising:
- Providing a first liquid comprising a solute and a solvent;
- Forming liquid droplets of the first liquid;
- Contacting the liquid droplets with a second liquid so as to cause the solvent to exit the droplets, thus forming solid beads;
- the solute comprising a polymer, the concentration of polymer in the first liquid being at least 7% w/v, ‘w’ being the weight of the polymer and ‘v’ being the volume of the solvent.
A method of forming solid beads, the method comprising:
- Providing a first liquid comprising a solute and a solvent;
- Providing a liquid droplet generator comprising a piezoelectric component operable to generate droplets;
- Causing the liquid droplet generator to form droplets of the first liquid;
- Contacting the liquid droplets with a second liquid so as to cause the solvent to exit the droplets, thus forming solid beads;
- the solute comprising a polymer, the concentration of polymer in the first liquid being at least 7% w/v, ‘w’ being the weight of the polymer and ‘v’ being the volume of the solvent.
A method of forming solid beads, the method comprising:
- Providing a first liquid comprising a solute and a solvent;
- Forming liquid droplets of the first liquid;
- Contacting the liquid droplets with a second liquid so as to cause the solvent to exit the droplets, thus forming solid beads,
- the solute comprising a polymer,
- the solvent being non-aqueous and having a solubility of at least 5 g per 100 ml second liquid.
A method of forming solid beads, the method comprising:
- Providing a first liquid comprising a solute and a solvent;
- Forming liquid droplets of the first liquid;
- Contacting the liquid droplets with a second liquid so as to cause the solvent to exit the droplets, thus forming solid beads,
- the solute comprising a polymer, the concentration of polymer in the first liquid being at least 7% w/v., ‘w’ being the weight of the polymer and ‘v’ being the volume of the solvent,
- wherein the time taken for the formation of solid beads from initial contact of the liquid droplet with the second liquid may be less than 15 minutes.
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Dependencies are inferred from the claim text.