Paste, which can undergo screen printing for producing a porous polymer membrane for a biosensor
AssigneeInverness Medical Limited
InventorsMatthias Stiene, Birgit Von Tiedemann, Jamie Roders, Lucy Macgregor, Jerry McAleer, Alan McNeilage
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Abstract
The invention relates to a paste, which can undergo screen printing, for producing a porous polymer membrane. Said paste contains at least one polymer, one or more solvents for the polymer having a boiling point of >100° C., one or more non-solvents for the polymers (pore-forming agents) having a higher boiling point than that of the solvent(s), and contains a hydrophilic viscosity modifier.
Claims18
A screen-printable paste for producing a porous polymer membrane, comprising at least one polymer, one or more solvents for the polymer with a boiling point of >100° C., one or more nonsolvents (pore formers) for the polymer with a higher boiling point than the solvent(s) and a hydrophilic viscosity modifier.
A method for producing a screen-printable paste, by
- producing a mixture of one or more solvent(s) for a polymer and one or more nonsolvent(s) for a polymer (pore former),
- mixing in the polymer until a uniform suspension results,
- rolling the suspension until a clear gel results, adding a hydrophilic viscosity modifier, and
- rolling the mixture until the viscosity modifier is uniformly distributed.
Dependencies are inferred from the claim text.