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Extended use planar sensors

  • US 6,068,748 A
  • Filed: 08/25/1997
  • Issued: 05/30/2000
  • Est. Priority Date: 04/09/1993
  • Status: Expired due to Term
First Claim
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1. A membrane suitable for use with a planar oxygen sensor comprising the polymerization product of:

  • at least one monomer having the formula CH2

    C(R1)(COOR2), where R1 and R2 are each selected from the group consisting of hydrogen, hydrocarbon groups, and alcohol groups and R1 and R2 can be the same or different;

    at least one monomer selected from the group consisting of those having the formulas CH2

    C(R1)(CONR2 R3), CH2

    C(R1)(OCOR2), where R1, R2, and R3 are each selected from the group consisting of hydrogen, hydrocarbon groups, and alcohol groups and R1, R2, and R3 can be the same or different; and

    at least one nitrile-containing monomer,wherein the composition is constructed and arranged as a membrane, suitable for use with an electrochemical planar oxygen sensor for separating electrodes from a sample, and having impermeability to liquid water, but rapid permeability to water vapor.

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