Air-entraining water-reducing agents for cement composition
AssigneeNitto Chemical Industry Co., Ltd.
InventorsYuichi Kawamura, Goro Hirano, Makoto Nagai, Yasunobu Miura
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Abstract
A cement composition comprising a cement and an air-entraining water-reducing agent for the cement, comprising as an active ingredient a higher secondary alcohol oxyalkylene sulfate of the following general formula ##STR1## wherein R and R' are alkyl groups with the sum of the total number of carbon atoms of both R and R' being about 10 to 20; n and m are each an integer of from 0 to 15, with n+m being 1 to 15, and M is an alkali metal atom, an ammonium group or an amine group.
Claims7
A cement composition comprising a cement and an air-entraining water-reducing agent for the cement, comprising as an active ingredient a higher secondary alcohol oxyalkylene sulfate of the following general formula ##STR26## wherein R and R' are alkyl groups with the sum of the total number of carbon atoms of both R and R' being about 10 to 20;
- n and m are each an integer of from 0 to 15, with n+m being 1 to 15, and M is an alkali metal atom, an ammonium group or an amine group.
Dependencies are inferred from the claim text.