(under the class definition) Processes of imparting a desired color property to mineral oils and products of such processes.
(1) Note. The processes classified herein involve a treatment of the oil to give the desired color property which is more than the mere addition of a color body thereto. However, some of the patents classified herein recite the treatment of the oil with another mineral oil which may impart bloom or fluorescence to the oil being treated. Treatments with nonmineral oil color bodies (pigments or dyes) are classified in the appropriate composition class.
SEE OR SEARCH CLASS
8, Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers, subclass for process and 521 compositions for dyeing oils or waxes.
106, Compositions: Coating or Plastic,
272, for wax with a nonmineral oil dye or pigment and subclasses 280-284 for bituminous compositions containing nonmineral oil dye or pigment.
