Drug – bio-affecting and body treating compositions – Dentifrices – Ammonia – amine – or derivative thereof
Patent
1989-08-24
1990-09-11
Stoll, Robert L.
Drug, bio-affecting and body treating compositions
Dentifrices
Ammonia, amine, or derivative thereof
423306, 423308, 423311, 424 57, 523105, 524415, 524584, 524586, A61K 722, C01B 2536, C01B 2545, C08K 332
Patent
active
049561723
ABSTRACT:
A novel crystalline aluminum ammonium phosphate, characterized by predominantly equiaxed crystals, is provided of the formula: Al.sub.2 (NH.sub.4)OH(PO.sub.4).sub.2.2H.sub.2 O. The phosphate is useful as a dentifrice polishing agent and filler for plastics. The novel product can be prepared by reacting aluminum trihydroxide with diammonium orthophosphate or monobasic ammonium phosphate. By heating at elevated temperature, the product can be converted to the tridymite form of aluminum phosphate.
REFERENCES:
patent: 3726960 (1973-04-01), Bell
patent: 3729546 (1973-04-01), Bell
patent: 4542001 (1985-09-01), Iino et al.
J. J. Pluth et al, "Structure of NH.sub.4 Al.sub.2 (OH)(CH.sub.2 O) (PO.sub.4).sub.2.H.sub.2 O, the Ammonium-Aluminum Analog of GaPO.sub.4. 2H.sub.2 O and Leucophosphite", Acta Cryst. (1984). C40, 2008-2011.
John B. Parise, "Preparation and Structure of the Aluminum Ammonium Phosphate Dihydrate Al.sub.2 (NH.sub.4)OH (PO.sub.4.2H.sub.2 O: A Tunnel Structure with Ammonium Ions in the Channels", Acta Cryst. (1984), C40, 1641-1643.
Aluminum Company of America
Lange Wayne A.
Stoll Robert L.
Sullivan Jr. Daniel A.
LandOfFree
Ammonium aluminum phosphate does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ammonium aluminum phosphate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ammonium aluminum phosphate will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1183654