IPC Subgroup
C04B 24/18 Lignin sulfonic acid or derivatives thereof, e.g. sulfite lye
Introduced: January 1985
Last revised: January 2006
Full Title
Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers > Sulfur-containing compounds > Lignin sulfonic acid or derivatives thereof, e.g. sulfite lye
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- Subclass:
- LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE