CPC Subclass Not Allocatable
C09C TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES (treatment of materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone C04B14/00, C04B18/00, C04B20/00); PREPARATION OF CARBON BLACK
Description
C09C covers physical and chemical treatment methods applied to inorganic materials to improve their performance as pigments or fillers in paints, coatings, plastics, and related compositions. This includes surface modification, coating, grinding, and purification of mineral pigments and fillers, as well as the synthesis and processing of carbon black from carbonaceous sources. The subclass excludes fibrous fillers (covered elsewhere) and focuses on particulate inorganic solids that enhance color, opacity, or mechanical properties of end-use formulations.
5 direct subcodes
Child Classifications
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- C09C 1/00 Treatment of specific inorganic materials other than fibrous fillers (tenebrescent materials C09K9/00; luminescent materials C09K11/00); Preparation of carbon black
- C09C 2200/00 Compositional and structural details of pigments exhibiting interference colours
- C09C 2210/00 Special effects or uses of interference pigments
- C09C 2220/00 Methods of preparing the interference pigments
- C09C 3/00 Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties