ANVENDELSE AF GEM-DIPHOSPHONSYRER SOM TILSAETNING TIL MUND- OG TANDPLEJEMIDLER

• Main Authors: SCHMIDT-DUNKER, MANFRED, GLOXHUBER, CHRISTIAN, PLOEGER, WALTER
• Format: Patent
• Language: Danish
• Published: 29.01.1990
• Edition: 5
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; ADHESIVES; CHEMISTRY; DYES; HUMAN NECESSITIES; HYGIENE; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; MEDICAL OR VETERINARY SCIENCE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC CHEMISTRY; PAINTS; POLISHES; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Azacycloalkane-2,2-diphosphonic acids having the formula OO HO PARALLEL PARALLEL OH ANGLE PP ANGLE HOOH ANGLE C ANGLE (CH2n--N-R wherein R is a member selected from the group consisting of hydrogen and alkyl having from 1 to 3 carbon atoms and n is an integer from 3 to 5; as well as their water-soluble salts. The azacycloalkane-2,2-diphosphonic acids are excellent sequestering agents especially for alkaline earth metal ions. They are stabilizers for percompounds and are useful in the delaying of the setting times for gypsum.