Synthesis of stable solutions of rare earth tris...

Details Synthesis of stable solutions of rare earth tris... Synthesis of stable solutions of rare earth tris...

2007-12-25

2007-12-25

Anthony, Joseph D. (Department: 1714)

Colloid systems and wetting agents; subcombinations thereof; pro

Continuous liquid or supercritical phase: colloid systems;...

Primarily organic continuous liquid phase

C516S031000, C534S015000, C556S002000, C556S005000, C556S015000, C556S019000, C556S024000, C558S071000, C558S089000, C568S008000, C252S189000

Reexamination Certificate

active

10819608

ABSTRACT:
Stable rare earth tris (organophosphate) solutions comprise a rare earth tris (organophosphate) and a hydrocarbon solvent. From about 2% to about 10% rare earth element, preferably from about 3% to about 8%, is present in the solutions. The rare earth tris (organophosphate) solutions are stable from precipitation of the rare earth tris (organophosphate) for at least about fifteen (15) days, preferably for at least about twenty (20) days and most preferably at least about thirty (30) days. A process for preparing these solutions is described herein. A stabilizing additive, acid, glycol or mixtures thereof, is utilized to inhibit precipitation. The molar ratios of free acid, glycol and/or water to the rare earth element are controlled to inhibit precipitation.

REFERENCES:
patent: 3047601 (1962-07-01), Johnson
patent: 3110556 (1963-11-01), Peppard et al.
patent: 3539941 (1970-11-01), Halverson
patent: 3551345 (1970-12-01), Kleinerman
patent: 4242232 (1980-12-01), Sylvester et al.
patent: 4429089 (1984-01-01), Pedretti et al.
patent: 4619982 (1986-10-01), Jenkins
patent: 4749560 (1988-06-01), Elgavish
patent: 4791086 (1988-12-01), Yeh et al.
patent: 5057627 (1991-10-01), Edwards
patent: 5064910 (1991-11-01), Hattori et al.
patent: 5130052 (1992-07-01), Kreh et al.
patent: 5306746 (1994-04-01), Ida et al.
patent: 5478901 (1995-12-01), Jones et al.
patent: 5674985 (1997-10-01), Hawkins et al.
patent: 5858465 (1999-01-01), Hunt et al.
patent: 0 520 732 (1992-12-01), None
patent: 0 924 214 (1999-06-01), None
Suglobov D.N. et al.: “DEHP Complexes of Lanthanides (III) and Actinides (III)” Journal of Alloys and Compounds, CH, Elsevier Sequoia, Lausanne, vol. 213/214, 1994, pp. 523-527, XP000907646, ISSN: 0925-8388.

Affiliated with

Also associated with

Rating

Synthesis of stable solutions of rare earth tris... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Synthesis of stable solutions of rare earth tris..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Synthesis of stable solutions of rare earth tris... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3867952