×

Aromatic polyketones and preparation thereof

  • US 3,065,205 A
  • Filed: 10/27/1959
  • Issued: 11/20/1962
  • Est. Priority Date: 10/27/1959
  • Status: Expired due to Term
First Claim
Patent Images

1. A PROCESS FOR PREPARING ESSENTIALLY LINEAR, SUBSTANTIALLY AROMATIC POLYKETONES WHICH COMPRISES REACTING AN INERT ORGANIC SOLVENT UNDER ANHYDROUS CONDITIONS AT LEAST ONE AROMATIC COMPOUND FROM THE GROUP CONSISTING OF ARYL ETHERS AND POLYNUCLEAR AROMATIC HYDROCARBONS, WITH A DIACID HALIDE FROM THE GROUPS ARE SEPARATED BY AT LEAST ONE CARBON DICARBONYL HALIDES IN WHICH THE POINTS OF ATTACHMENT OF THE CARBONYL GROUPS ARE SEPARATED BY AT LEAST ONE CARBON ATOM, AND ALKYLENE DIACID HALIDES, IN THE PRESENCE OF A FRIEDEL-CRAFTS CATALYST, AND AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 50* TO ABOUT 125*C.

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