Patents Assigned to Bevaloid Limited
  • Polymer compositions detectable in water
    Patent number: 4704440
    Abstract: Water treatment, e.g. antiscaling, polymer compositions are marked or labelled with activated groups which are attached to the polymer chain backbone by carbon-carbon bonds. These activated groups are subjected to color forming reactions, e.g. by reaction with a diazonium aromatic compound, thus enabling the polymers to be detected at very low concentrations in water.
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: November 3, 1987
    Assignee: Bevaloid Limited
    Inventors: John Goulding, Derek Clark