Patent ID: 11939273
Assignee: CONSTRUCTION RESEARCH & TECHNOLOGY GMBH
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  Y | IPC C

Claim 22:
23. The composition according to claim 22, wherein the dispersant is selected from the group of
comb polymers having a carbon-containing backbone to which are attached pendant cement-anchoring groups and polyether side chains,
non-ionic comb polymers having a carbon-containing backbone to which are attached pendant hydrolysable groups and polyether side chains, the hydrolysable groups upon hydrolysis releasing cement-anchoring groups,
colloidally disperse preparations of polyvalent metal cations, and a polymeric dispersant which comprises anionic and/or anionogenic groups and polyether side chains, and the polyvalent metal cation is present in a superstoichiometric quantity, calculated as cation equivalents, based on the sum of the anionic and anionogenic groups of the polymeric dispersant,
sulfonated melamine-formaldehyde condensates,
lignosulfonates,
sulfonated ketone-formaldehyde condensates,
sulfonated naphthalene-formaldehyde condensates,
phosphonate containing dispersants,
phosphate containing dispersants, and
mixtures thereof.