N-PHOSPHONO-METHYLENE-MONOAMINO-ALKANE MONO AND POLYPHOSPHONIC ACIDS OR N-PHOSPHONO-METHYLENE- INO-ALKANE POLYPHOSPHONIC ACIDS AND A PROCESS FOR THEIR PRODUCTION

The present invention provides a phosphonic acid selected from N-phosphono-methylene-monoaminoalkane-mono- and polyphosphonic acids and N-phosphono-methylene-diaminoalkane polyphosphonic acids having the general formula I wherein n is 1, 2 or 3, R1 is hydrogen, an alkyl radical containing 1 to 11 ca...

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Bibliographische Detailangaben
Hauptverfasser:	SOMMER, KLAUS, RAAB, GUNTER
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE ORGANIC CHEMISTRY TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	The present invention provides a phosphonic acid selected from N-phosphono-methylene-monoaminoalkane-mono- and polyphosphonic acids and N-phosphono-methylene-diaminoalkane polyphosphonic acids having the general formula I wherein n is 1, 2 or 3, R1 is hydrogen, an alkyl radical containing 1 to 11 carbon atoms in the carbon chain or the groupings -OH, (CH2)nPO3H2, -C2H4OH, - (CH2)nCOOH, wherein n is as above, R2 is hydrogen or PO3H2; and R3 and R4 are each hydrogen or CH2PO3H2.