Patents Assigned to Drew Chemical
  • Treatment of water containing fats, oils and greases
    Patent number: 4472284
    Abstract: Water, containing dispersed fats, oils and greases is treated with a water soluble melamine-formaldehyde product to effect coagulation or flocculation thereof to a product which does not stick to surfaces. Such treatment is further enhanced by the addition of a water soluble polyacrylamide.
    Type: Grant
    Filed: July 25, 1979
    Date of Patent: September 18, 1984
    Assignee: Drew Chemical
    Inventor: Kenneth R. Bolhofner