Method for the manufacture of a cement containing...

Details Method for the manufacture of a cement containing... Method for the manufacture of a cement containing...

C - Chemistry, Metallurgy

04

B

261/56.2

C04B 24/12 (2006.01) C04B 24/32 (2006.01)

Patent

CA 1229631

ABSTRACT To a cement composition there is added an alkylene oxide adduct having the general formula Image where R1 is the group CH2NR4R5 or the group C2N+R4R5R6X-, where R4, R5 and R6 are alkyl or hydroxyalkyl groups having 1-4 carbon atoms and X is an anion, R2 is an alkyl group having 1-15 carbon atoms, R3 is hydrogen or one of the groups R2 and R1, n1 is a number between 10 and 200, preferably 25-100, n2 is a number between 0 and 100, preferably 0-25, the total number of carbon atoms in the alkyl substituents in the benzene ring being 6-30 and the ratio between n1 and n2 more than 2. In this way the cement based composition obtains a good fluidity and an appropriate air content.

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