 Certain fluorine substituted PGI.sub.2 compounds |
| What is claimed is: 1. A compound of the formulae: ##STR22## wherein Y, T, W and X may each be H or ... |
|
| Various 15-deoxy-16-hydroxy-16-ethynyl and 16-ethynylsubstituted prostaglandins |
| We claim: 1. An optically active compound of the formula: ##STR24## wherein R.sub.1 is selected ... |
|
| Tetrahydro-2-(nitromethylene)-2H-1,3-thiazines |
| I claim as my invention 1. A resonance hybrid in which the two significant forms which contribute ... |
|
| Pyrazolidinone salts as developing agents |
| We claim: 1. A 1-phenyl-3-pyrazolidinone salt of the formula ##STR14## in which X.sup..crclbar. is ... |
|
| Method of producing carbon source for fermentation |
| OF THE PREFERRED EMBODIMENTS Molasses applicable to the present invention include cane molasses ... |
|
| Aluminum alloy of age hardening type |
| Ranges in weight percents of various constituents which are or may be included in an alloy that ... |
|
| 3-Substituted iodo alkenyl compounds and methods for preparing same |
| Having thus described the invention what is claimed is: 1. 3-hydroxy-1-iodo-1-trans octene.
... |
|
| Novel cationic lactam polymers and 1-(3-alkyl amino propyl)pyrrolidone-2 intermediates therefor |
| What is claimed is: 1. A polymeric quaternary compound conforming to the following formula; ##STR20#... |
|
| Method for multicolor dyeing of textile yarns |
| That which is claimed is: 1. A method for the high speed dyeing of a moving yarn strand to obtain a ... |
|
| Dispersant for coal into oils |
| OF THE INVENTION As a result of extensive researches made for overcoming the drawbacks of the ... |
|
|
Solvent extraction of alcohols from water solutions with fluorocarbon solvents
| Details |
Inventors: Levy, Sidney;
Assignee:
Primary Examiner: Evans; Joseph E.
Assistant Examiner:
Attorney, Agent or Firm:
Certain fluorocarbon liquid materials are particularly effective solvents for the removal of lower alcohols from aqueous solutions, an extraction process. The fluorocarbons have low heats of vaporization. The specific fluorocarbons recited have boiling points near room temperature which permits the separation of alcohols from the aqueous solutions with much lower energy requirements than required by distillation. The solvent systems are intended for use in fermentation separations such as those recited in my co-pending application Ser. No. 06/076 250 and similar anaerobic and aerobic fermentations to produce alcohols and related fermentation products. |
|
DETAILED DESCRIPTION What is claimed is: 1.
The process for separating two to five carbon alcohols in aqueous solution comprising the steps of contacting said aqueous solution with a fluorocarbon solvent system to extract said alcohols from said aqueous phase, separating said alcohol rich fluorocarbon solvent phase from said aqueous phase, removing said fluorocarbon solvent from said solution of said alcohols in said fluorocarbon solvent by vacuum evaporation, compressing and cooling said fluorocarbon vapors to produce liquid fluorocarbon solvent and returning said fluorocarbon solvent to the said extraction process wherein the fluorocarbon solvents comprise singly or mixtures of one and two carbon fluorocarbons that boil at temperatures between -41.
degree.
C.
and +48.
degree.
C.
, Have vapor pressures at 21.
degree.
C.
between 10 PSIA and 165 PSIA, have heats of vaporization below 60 calories per gram, have a Kauri butanol number of 10 or greater, have a specific heat below 0.
28, have a surface tension below 20 dynes per centimeter, have a viscosity below 0.
5 centipoise, have a solubility below 1% in water, and have a solubility below 0.
2% of water in the fluorocarbon.
2.
The process according to claim 1 wherein the solvent comprise fluorocarbons containing one or two carbon atoms and from one to six fluorine atoms with the remainder being hydrogen, chlorine, and bromine, and admixtures of said fluorocarbons.
3.
The process according to claim 1 wherein the fluorocarbons are one or more of the group comprising monochloro difluoro methane, monochloro heptafluoro ethane, dichloro difluoro methane, dichloro tetrafluoro ethane, monofluoro dichloro methane, and monofluoro trichloro methane.
4.
The process according to claim 1 wherein the alcohol is butanol and the fluorocarbon solvent is monochloro trifluoro methane.
5.
The process according to claim 1 wherein the alcohol is ethanol and the fluorocarbon solvent is monochloro trifluoro methane.
6.
The process according to claim 1 wherein the alcohol is propanol and the fluorocarbon solvent is monochloro trifluoro methane
|
| Related patents |
|
|
Process for the preparation of 1,3,5-trichlorobenzene
What is claimed is: 1. In a process for the preparation of 1,3,5-trichlorobenzene by isomerization of at least one other trichlorobenzene at an elevated temperature in ...
|
|
|
Assay process with non-boiling denaturation
OF PREFERRED EMBODIMENTS Reagents typically used in practice of the radioassay process of the invention may comprise:
______________________________________
ZER...
|
|
|
Homogeneous polynucleotide displacement assay method kit and reagent complex
OF THE INVENTION The basic elements of the reagent complex provided by the present invention and used in the method and kit of the present invention are a probe ...
|
|
|
Polyphosphoramidite oligomers and stabilizer compositions thereof
The polyphosphoramidite oligomers may be represented by the formula ##STR1## wherein: A is a nitrogen radical ##STR2## wherein R.sub.1 is an alkyl radical containing 1 ...
|
|
|
Pigment compositions
What is claimed is: 1. A composition which is a mixture of pyrrolopyrrole pigments which comprises (a) 99.9 to 75% by weight of a pyrrolopyrrole pigment of formula I' ##S...
|
|
|
Crosslinked copolymers of .alpha.,.beta.-olefinically unsaturated dicarboxylic anhydrides
What is claimed is: 1. A crosslinked copolymer comprising the following copolymerized units: A. 2.0 to 20 weight percent of at least one .alpha.,.beta.-olefinically ...
|
|
|
Effective hydrocarbon blend for removing asphaltenes from oil wells
OF THE INVENTION The blend according to the present invention is better explained by referring to the ternary chart of FIG. 1, in which hydrocarbon compositions are ...
|
|
|
Hydrophilic macroporous three dimensional copolymers of hydroxyalkyl acrylates or methacrylates with crosslinking agents and the method of their manufacturing
We claim: 1. Hydrophilic macroporous three dimensional copolymers of hydroxyalkyl acrylates or hydroxyalkyl methacrylates, said hydroxyalkyl containing 1-4 carbon atoms, ...
|
|
|
Highly activated mixtures for constructing load bearing surfaces and method of making the same
OF THE INVENTION The present invention may be better understood by reference to the following detailed description, taken in conjunction with the figures, in which: FIG....
|
|
|
Cycloaliphatic unsaturated ketones as odour- and taste-modifying agents
We claim: 1. Process for the preparation of compounds of the formula ##SPC14## containing an isolated double bond in position 1 or two conjugated double bonds in ...
|
|
|
Molecular Biology 
