Aminoalkyl phosphonic acid or salt concrete fluidisers - used in combination with pore-formers to give improved frost resistance without strength loss,申请号DE19904036811-传众专利搜索

发明名称	Aminoalkyl phosphonic acid or salt concrete fluidisers - used in combination with pore-formers to give improved frost resistance without strength loss
摘要	Fluidising agents which can be used in combination with pore formers (esp. those based on abietic acid) in mortars and concrete are aminoalkylphosphonic acids of formula (I) or (II) or their alkali(ne earth)-ammonium or amine-salts. In formulae, X = H or COOH; R = 1-3C alkyl; and n = 1-6. The amt. of (I) or (II) used is pref. 0.01-0.5% dry wt. based on cement content of the compsn. Typical fluidising agents are (1) N,N-di-Me-aminomethane-diphosphonic acid; (2) N,N-bis(methylphosphonyl) methylamine; (3) N,N-bis(methylphenyl)-epsilon-aminocaproic acid; or (4) Na salts of (1)-(3). ADVANTAGE - Mortars or concrete contg. the combination are workable for up to 90 mins. and the presence of (I) or (II) improves the frost resistance without there being any strength loss.
申请公布号	DE4036811(A1)	申请公布日期	1992.05.21
申请号	DE19904036811	申请日期	1990.11.19
申请人	CHEMIE AG BITTERFELD-WOLFEN, O-4400 BITTERFELD, DE	发明人	BERGHOLZ, WOLFGANG, DR.RER.NAT., O-6900 JENA, DE;GUENTHER, EBERHARD, DR.RER.NAT., O-7000 LEIPZIG, DE;KOCHMANN, WERNER, PROF. DR.RER.NAT., O-4440 WOLFEN, DE;PEMSEL, MARGA, O-5301 NIEDERZIMMERN, DE;SCHMIGALE, VOLKER, DIPL.-CHEM., O-4413 SANDERSDORF, DE;ECKLER, HANS-OTTO, DIPL.-ING. DR.-ING., O-5300 WEIMAR, DE;NEWE, RUEDIGER, DIPL.-ING. DR.-ING., O-4440 WOLFEN, DE;TAEUBER, MANFRED, O-4401 BOBBAU, DE
分类号	C04B24/00;C04B24/04;C04B28/02	主分类号	C04B24/00
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