Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1977-12-27
1979-07-03
Douglas, Winston A.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252428, 55 67, 55386, 210 31C, 210198C, 260650R, 252431R, 252431N, 427220, B01J 3102, B01D 1508
Patent
active
041599667
ABSTRACT:
A gas or liquid chromatographic column packing material prepared by reacting an activated, i.e., active hydrogen-containing, silica and/or alumina support with a reactive hydrogen-containing partitioning agent. The activated silica and/or alumina support is prepared by reacting a Group III metal hydride (boron, aluminum, gallium or indium hydride) with a hydrated silica and/or alumina (a siliceous or aluminaceous mineral having surface hydroxyl groups or a synthetic siliceous or alumina having surface hydroxyl groups). The support has hydrogen atoms attached to an aluminum, boron, gallium or indium atom which in turn is attached through oxygen to the silica and/or alumina. The hydrogen atoms will react with hydrogen of a hydroxyl, amine, thio, amide, or carbohydrate moieties of organic compounds, as for example, alcohols, polyols, polyglycol ethers, polyglycol amines, polyamines, aliphatic and aromatic amides, alkoxy amides, sugars and the like. The long-chain, high molecular weight compounds of these classes are often used as partitioning agents for chromatographic column packings.
REFERENCES:
patent: 2829981 (1958-04-01), Shapiro
patent: 3146209 (1964-08-01), Byrne et al.
patent: 3274120 (1966-09-01), Aftandilian
patent: 3557531 (1971-01-01), McKinney
patent: 3725302 (1973-04-01), Shimely et al.
patent: 3808125 (1974-04-01), Good
patent: 3817931 (1974-06-01), Brooks et al.
patent: 3956179 (1976-05-01), Sebestian et al.
Journal of Chromatography, 135 pp. 261-272 (1977) by Sadao Mori.
Baker G. R.
Douglas Winston A.
Konopka P. E.
The Dow Chemical Company
LandOfFree
Chromatographic column packing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Chromatographic column packing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chromatographic column packing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2274347