Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1982-05-20
1983-09-06
Konopka, P. E.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252428, 252429R, 252430, 252437, 252438, 252440, 252441, 252442, 252194, 423267, 423268, 560 51, 568 21, 568 42, 568309, 568312, 568937, B01J 3124, B01J 3118, B01J 2712, C07C 4545
Patent
active
044028628
ABSTRACT:
The invention relates to the stabilization against water uptake of hygroscopic salts useful as catalysts by formation of anhydrous adducts with particulate support materials in order to facilitate manipulation and storage. The adducts comprise a particulate support material and a hygroscopic salt of a species of formula R.sup.1 R.sup.2 R.sup.3 R.sup.4 N, R.sup.1 R.sup.2 R.sup.3 R.sup.4 P, R.sup.1 R.sup.2 R.sup.3 R.sup.4 As, wherein R.sup.1 R.sup.4 which may be identical or different represent hydrogen or alkyl or aryl groups, or of Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba, Cu. Ag, Zn, Cd, Au, Hg, Ga, In, Tl, Sn, Sb or Pb, the salt anion being fluoride, bromide, chloride, sulphate, nitrate, nitrite, cyanate, thiocyanate, peroxide, hydroxide, acetate, formate or comprises phosphorus and oxygen, the salt being coated on the support material thereby being rendered less hygroscopic; provided that when the species is Na, the anion is other than hydroxide and when the species is Tl the anion is fluoride, bromide or chloride. Adducts of salts useful in catalytic fluorination, e.g. R.sup.1 R.sup.2 R.sup.3 R.sup.4 N.sup.+ F.sup. - and CsF are of especial interest.
REFERENCES:
patent: 1985204 (1934-12-01), Derr et al.
patent: 2498552 (1950-02-01), Kilgren et al.
patent: 2913421 (1959-11-01), Horne et al.
patent: 2968676 (1961-01-01), Potter, Jr. et al.
patent: 3555102 (1971-01-01), Ogura et al.
patent: 3720723 (1973-03-01), Pritchett
patent: 3728405 (1973-04-01), Thoroughgood
patent: 3793227 (1974-02-01), Snead et al.
patent: 3867469 (1975-02-01), Ricks
patent: 3975299 (1976-08-01), Crathorne
patent: 3983175 (1976-09-01), Tamai et al.
patent: 3984475 (1976-10-01), Tamai et al.
patent: 4033764 (1977-07-01), Colegate
patent: 4157312 (1979-06-01), Frame
Moffat; Catalysis Reviews-Sci. Eng., 18(2)-(1978), pp. 199-258.
Take et al.; Bull. Chem. Soc. Japan, 51(6), (1978), pp. 1581-1584.
Regen et al.; J.A.C.S.-99-(1977)-p. 3837.
Tundo; J.C.S. Chem. Comm., (1977)-pp. 641-642.
Keiman et al.; J. Org. Chem., 43(5), (1978), pp. 1020-1022.
Helmy et al.; Z. Phys. Chemie, Leipzig, 260(1979) 1, S.65-71.
The Condensed Chemical Dictionary-8th Edition Gessner G. Hawley-Van Nostrand Reinhold Co., p. 187.
Konopka P. E.
National Research Development Corporation
LandOfFree
Stabilization of hygroscopic salts does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stabilization of hygroscopic salts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stabilization of hygroscopic salts will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1591563