Patents Represented by Law Firm Perman & Greer
  • Patent number: 4914180
    Abstract: Polyamides having improved solubility and processing characteristics are provided having incorporated into the polymeric chain a novel aromatic diamine compound, 2-(3-aminophenyl)-2-(4-aminophenyl) hexafluoropropane (3-4'-6F Diamine). The polyamides are prepared by reacting the 3,4'-6F Diamine with an aliphatic or aromatic di-acid or acid halide. It has been found that the polyamides of this invention have improved solubility characteristics, low dielectric constants and improved thermal flow properties as a consequence of the meta/para positioning of the amino groups on the daimine, which renders these polymers more readily melt spinnable for the production of fibers. The polymers may also be compression molded and fabricated into composites at moderate temperatures and pressures.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: April 3, 1990
    Assignee: Hoechst Celanese Corporation
    Inventor: Rohitkumar H. Vora