Patents Assigned to Improtec
  • Patent number: 4424388
    Abstract: A low temperature, low pressure process for the production of alcohol by the hydration of olefins. The olefin is contacted with a sulfonated ion-exchange resin in the presence of water and glycol diethyl solvent to hydrate said olefin, preferably propylene, and form from the olefin the corresponding aliphatic, monohydric alcohol. The solvent, a key and novel feature of the invention, at reaction conditions forms two liquid phases, a glycol diether phase and a water phase. The alcohol forms predominanty in the glycol diether phase and to a lesser extent in the water phase, with the products, inclusive of by product either, being distributed between the two phases. The glycol diethyl phase effectively displaces the equilibrium toward higher alcohol production, and the ether by product suppresses the equilibrium and minimizes formation of the ether product.
    Type: Grant
    Filed: June 25, 1982
    Date of Patent: January 3, 1984
    Assignee: Improtec
    Inventors: David G. Braithwaite, deceased, Joe D. Pickle
  • Patent number: 4400241
    Abstract: A novel composition, and extraction process for the dehydration of a hydrated aliphatic, monohydric alcohol to produce a fuel grade alcohol. A select group of alkali-metal and alkaline-earth metal salts are added to and dissolved within a low volatility polyhydric alcohol to form a solution, or solvent extractant, and said solvent extractant contacted and dissolved within said aliphatic, monohydric hydrated alcohol, the solvent extractant distilled, condensed, and a dehydrated fuel grade aliphatic monohydric fuel grade alcohol recovered.
    Type: Grant
    Filed: July 20, 1981
    Date of Patent: August 23, 1983
    Assignee: Improtec
    Inventors: David G. Braithwaite, Thomas Cheavens, Jason M. Voyce