Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 8178590 | Block copolymer and use thereof A polymer electrolyte satisfying both of proton conductivity and chemical stability such as water resistance at a high level that is preferable as the polymer electrolyte for fuel cells and the like is provided. The invention includes a block copolymer comprising on... | 05/15/2012 |
| 7977394 | Triblock copolymers with acidic groups Triblock copolymers useful for forming ion conductive membranes are provided. The triblock copolymers are characterized by having either a hydrophobic-hydrophilic-hydrophobic or a hydrophilic-hydrophobic-hydrophilic polymer sequence that induces a microphase separat... | 07/12/2011 |
| 7037474 | Use of sulfide-containing liquors for removing mercury from flue gases A method and apparatus for reducing and removing mercury in industrial gases, such as a flue gas, produced by the combustion of fossil fuels, such as coal, adds sulfide ions to the flue gas as it passes through a scrubber. Ideally, the source of these sulfide ions m... | 05/02/2006 |
| 6699913 | Process for preparing monodisperse anion exchangers having strongly basic functional groups The present invention relates to a process for preparing novel, monodisperse anion exchangers having strongly basic functional groups either in the center of the resin particle or in the shell of the resin particle, as well as to their use.... | 03/02/2004 |
| 5804606 | Chelating resins The present invention is concerned with improved chelating resins. More particularly, the present invention is concerned with macroporous, aminoalkylphosphonic or iminodiacetic acid chelating resins having improved stability and capacity in the removal of... | 09/08/1998 |
| 5789496 | Process for separating cesium from industrial streams containing other alkali metals using poly(hydroxyarylene) polymeric resins A method for the removal, separation, and concentration of cesium cations from a source solution which may contain larger concentrations of other alkali metal ions comprises bringing the source solution into contact with a polymeric resin containing poly(... | 08/04/1998 |
| 5656702 | Processes for separating cesium from industrial streams containing other alkali metals using poly(hydroxyarylene) polymeric resins A method for the removal separation, and concentration of cesium cations from a source solution which may contain larger concentrations of other alkali metal ions comprises bringing the source solution into contact with a polymeric resin containing poly(h... | 08/12/1997 |
| 5109074 | Process for preparing an aminomethylphosphonic chelating resin Aminomethylphosphonic chelating resins are prepared by amination, hydrolysis and methylphosphonation of haloalkylated polymer beads. The amination of the haloalkylated polymer beads is carried out with hexamethylenetetramine. The produced haloaminated bea... | 04/28/1992 |
| 4755322 | Method of obtaining composite ion exchangers This invention relates to a method of obtaining composite ion exchangers by implanting active inorganic sorbents into a matrix of an organic carrier. The inorganic sorbents are ferrocynides of various metals, hydrated antimony pentoxide, zirconium or tita... | 07/05/1988 |
| 4576969 | Spherical ion exchange resin having matrix-bound metal hydroxide, method for producing the same and method for adsorption treatment using the same A spherical ion exchange resin composed of a phenolic resin and a metal hydroxide is disclosed. The metal hydroxide is enclosed and bound with the phenolic resin. A method for producing such an ion exchange resin and a method for selectively adsorbing ion... | 03/18/1986 |
| 4567207 | Polymeric material adapted for physico-chemical separation of substances and method for producing same A polymeric material comprising a solid dispersion of a porous three-dimensional polymer with a pore diameter of 0.002 to 10 μm and a permeability coefficient of from 2×10-7 to 2×1031 2 cm.multidot.sec-1. This material ... | 01/28/1986 |
| 4424284 | Cationic adsorption agent A cationic adsorption agent which is obtained by reaction of (a) an amino compound which contains at least one amino group and at least one free or methylolated carbamide or thiocarbamide group, or a salt thereof, with (b) an aminoplast precondensate which doe... | 01/03/1984 |
| 4316005 | Cationic adsorption agent A cationic adsorption agent which is obtained by reaction of (a) an amino compound which contains at least one amino group and at least one free or methylolated carboxamide group, with (b) an aminoplast precondensate which does not contain amino groups. The novel a... | 02/16/1982 |
| 4284512 | Iron selective resins prepared from a phenol, HCHO and a di-secondary amine Ferric ions may be removed very selectively from aqueous solutions by means of a metal-chelating resin consisting of the acid-quaternized form of a cross-linked polymer produced by the condensation of a phenolic component comprising one or more phenols, f... | 08/18/1981 |
| 4272494 | Method for recovering metals of groups V-VI of the periodic system from solutions and pulps The method for recovering metals of Groups V-VI of the periodic system from solutions and pulps according to the present invention is effected by means of a selective ion-exchange resin which is the reaction product between a polyhydric phenol with formal... | 06/09/1981 |
| 4250031 | Phenolic chelate resin and method of adsorption treatment A phenolic chelate resin comprising the three-dimensional product obtained by cross-linking a phenolic compound represented by the general formula (I): ##STR1## (wherein M is an alkali metal atom, an ammonium group, or a hydrogen atom, and R | 02/10/1981 |
| 4241028 | Sorption of tungsten from alkaline solutions An 8-hydroxyquinoline-resorcinol-formaldehyde ion exchange resin, in bead form, is employed for sorption of tungsten from alkaline solutions such as brines.... | 12/23/1980 |
| 4197391 | Phenolic chelate resin and method of adsorption treatment A phenolic chelate resin comprising the three-dimensional product obtained by cross-linking a phenolic compound represented by the general formula (I): ##STR1## (wherein M is an alkali metal atom, an ammonium group, or a hydrogen atom, and R | 04/08/1980 |
| 4190709 | Mercury and copper selective metal chelating resins Mercury and copper ions may be removed very selectively from aqueous solutions by means of a metal-chelating resin consisting of a polymer produced by the condensation of a phenolic component comprising one or more phenols, formaldehyde, and a diamino com... | 02/26/1980 |
| 4180628 | Resin for sorption of tungsten A resin for sorption of tungsten is prepared by copolymerization of 8-hydroxyquinoline, a polyamine, resorcinol and formaldehyde. The resin finds particular utility for recovery of tungsten from alkaline brines.... | 12/25/1979 |
| 4028284 | Phenolic chelate resin A high adsorption capacity phenolic chelate resin consisting of a heavy metal-adsorbing phenolic chelate resin, containing iminodiacetic acid groups in the phenol nuclei, and having an adsorbability to a heavy metal in the proportion of at least 1.2 m equ... | 06/07/1977 |
| 3975268 | Method of largely eliminating volume change in a resin bed due to changes in the pH of liquid equipment by use of resin mixtures with compensating properties A method of bringing at least two liquids of different pH values into contact with a synthetic resin and substantially eliminating volume changes in the resin bed due to changes in the pH of the liquid phase, is provided wherein the resin is made up of a ... | 08/17/1976 |
| 3970534 | Graft copolymer and process for preparation thereof A graft copolymer comprising a hydrocarbon polymer main chain and a side chain composed mainly of a styrene compound of the following formula (I) ##SPC1## wherein R is a hydrogen atom or an R'CO group, in which R' is a hydrocarbon group having 1 to 20 car... | 07/20/1976 |
| 3969244 | Method of adsorbing heavy metals Particulate polycondensates of thiourea, thiosemicarbazide, or thiocarbazide with aldehydes and phenolic or amine constituents adsorb heavy metals from aqueous solutions of their compounds, also mercury from its vapors.... | 07/13/1976 |
| 3936399 | Process of producing phenolic chelate resin using iminodiacetic acid A phenolic chelate resin having a high heavy-metal chelating ability and capable of being reused is produced by polycondensing a phenol containing an iminodiacetic acid group with an aldehyde.... | 02/03/1976 |
