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Process for preparing fluorochemical monoisocyanates

  • US 7,081,545 B2
  • Filed: 12/31/2003
  • Issued: 07/25/2006
  • Est. Priority Date: 12/31/2003
  • Status: Expired due to Fees
First Claim
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1. A process for preparing fluorochemical monoisocyanates comprising reacting at least one fluorochemical alcohol represented by the formula CnF2n+1SO2NCH3(CH2)mOH, wherein n=2 to 5, and m=2 to 4, with 4,4′

  • -diphenylmethane diisocyanate (MDI) in a solvent in which the resulting fluorochemical monoisocyanate is not soluble;

    wherein the molar ratio of fluorochemical alcohol;

    MDI is from about 1;

    1 to about 1;

    2.5.

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