Modifying mortars of inorganic binding agents with alkylated...

Details Modifying mortars of inorganic binding agents with alkylated... Modifying mortars of inorganic binding agents with alkylated...

C - Chemistry, Metallurgy

04

B

261/56.1

C04B 24/22 (2006.01) C04B 28/02 (2006.01) C08G 8/04 (2006.01) C08G 8/18 (2006.01) C08G 8/28 (2006.01) C08G 8/36 (2006.01) C08L 61/14 (2006.01)

Patent

CA 1162671

Abstract of the Disclosure In a mortar comprising an inorganic binder, water and a sulphonated phenol condensation product modifier therefor, the improvement wherein said condensation product comprises a formaldehyde condensation product of a phenol wherein at least about 40 % of the phenolic OH groups are etherified with an alkylating agent, the condensation product being present in about 0.05 to 5 % by weight of the binder. Advantageously the condensation product is of the formula Image (I) in which R is H, C1-6-alkyl, C1-12-aralkyl; C1-4-mono- hydroxy or dihydroxy alkyl, of C3-4-hydroxy chloralkyl, less than 40 % of the R groups being H, X is H, CH2-SO3N, CH2OH, CH2-R' or NR'4, at least about half the X groups being CH2-SO3M, M is Na, K, Ca/2 or Mg/2, R'is H, C1-4-alkyl, C2-4-hydroxy alkyl , or another structural unit of the formula (I) and n ist at least 3. Thereby the mortar is rendered more plastic and dense while retaining its setting characteristics.

359445

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