×

Fluorinated thermoset polyurethane elastomers prepared from polyether coprepolymers formed from mono-substituted fluorinated oxetane monomers and tetrahydrofuran

  • US 5,703,194 A
  • Filed: 06/07/1995
  • Issued: 12/30/1997
  • Est. Priority Date: 07/10/1992
  • Status: Expired due to Fees
First Claim
Patent Images

1. A fluorinated thermoset polyurethane elastomer having random FOX/THF segments and having the structure, ##STR14## where:

  • a) n is 1-3;

    b) R is selected from the group consisting of methyl and ethyl;

    c) Rf is selected from the group consisting of linear and branched perfluorinated alkyls having 1-20 carbons, and oxaperfluorinated polyethers having from about 4-20 carbons;

    d) R1 is a divalent hydrocarbyl radical;

    e) X is 1-20;

    f) Y is 10-150;

    g) Z is 2-50.

View all claims
  • 23 Assignments
Timeline View
Assignment View
    ×
    ×