IPC Subgroup
C01B 33/14 Colloidal silica, e.g. dispersions, gels, sols
Introduced: September 1968
Last revised: January 2006
Full Title
Silicon; Compounds thereof > Silicon oxides; Hydrates thereof > Silica; Hydrates thereof, e.g. lepidoic silicic acid > Colloidal silica, e.g. dispersions, gels, sols
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- INORGANIC CHEMISTRY
- Subclass:
- NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
Related Keywords
AQUA-SOLS of silica gel
6 direct subcodes
Child Classifications
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- C01B 33/141 Preparation of hydrosols or aqueous dispersions
- C01B 33/145 Preparation of hydroorganosols, organosols or dispersions in an organic medium
- C01B 33/146 After-treatment of sols
- C01B 33/152 Preparation of hydrogels
- C01B 33/155 Preparation of hydroorganogels or organogels
- C01B 33/157 After-treatment of gels