Modifying mortars of inorganic binding agents with alkylated sulphonated phenol-formaldehyde condensation product
Номер патента: CA1162671A
Опубликовано: 21-02-1984
Автор(ы): Gunther Boehmke, Gunther Reitz, Kurt Schaupp
Принадлежит: Bayer AG
Опубликовано: 21-02-1984
Автор(ы): Gunther Boehmke, Gunther Reitz, Kurt Schaupp
Принадлежит: Bayer AG
Реферат: 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 (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.
Modifying mortars of inorganic binding agents with alkylated sulphonated phenol-formaldehyde condensation product
Номер патента: USRE31610E. Автор: Kurt Schaupp,Gunther Reitz,Gunther Boehmke. Владелец: Bayer AG. Дата публикации: 1984-06-26.