| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 562400000 |
Carboxylic acids and salts thereof
| 1292 |
| 562030000 |
Sulfonic acids or salts thereof (i.e., compounds containing the sulfonate group, -S(=O)(=O)-O- wherein the single bonded oxygen is bonded directly to hydrogen, or to a group IA or IIA light metal or to substituted or unsubstituted ammonium)
| 107 |
| 562008000 |
Phosphorus acids or salts thereof (i.e., compounds having -XH, wherein X is chalcogen, attached directly to phosphorus by nonionic bonding and wherein the hydrogen may be replaced by a substituted or unsubstituted ammonium or by a group IA or IIA light metal)
| 41 |
| 562840000 |
Carboxylic halides (i.e., compounds having the -C(=O)-halo group)
| 29 |
| 562887000 |
Carboxylic acid anhydrides (i.e., compounds having the -C(=O)-O-C(=O)- group)
| 10 |
| 562007000 |
Boron acids or salts thereof (i.e., compounds having -XH, wherein X is chalcogen, attached directly to boron by nonionic bonding and wherein the hydrogen may be replaced by a group IA or IIA light metal, or by substituted or unsubstituted ammonium)
| 6 |
| 562125000 |
Sulfinic or sulfenic acids or salts thereof (i.e., compounds containing the sulfinate group, -S(=O)O-, or the sulfenate group, -S-O-, wherein the single bonded oxygen is bonded directly to hydrogen, or to a group IA or group IIA light metal or to substituted or unsubstituted ammonium)
| 6 |
| 562821000 |
Sulfur halides (i.e., compounds having halogen attached directly to sulfur by nonionic bonding) | 5 |
| 20090105502 | METHODS FOR PRODUCING PERFLUOROALKANEDI(SULFONYL CHLORIDE) - Novel methods for preparing perfluoroalkanedi(sulfonyl chloride) are disclosed as are uses for these compounds. In one aspect, a method comprising reacting dibromoperfluoroalkane with Na | 04-23-2009 |
| 20120116121 | PROCESS FOR THE SULFOCHLORINATION OF HYDROCARBONS - Produce a sulfo-chlorinated hydrocarbon using liquid sulfur dioxide, a chlorinating agent such as chlorine or sulfuryl chloride, and a metal complex catalyst, the catalyst being represented as LnM where L is at least one of an amine, phosphine, chloride or oxide, n is an integer within a range of from 1 to 6, and M is a metal selected from a group consisting of copper (Cu), ruthenium (Ru), iron (Fe), chromium (Cr), lanthanum (La), nickel (Ni), palladium (Pd), rhodium (Rh), rhenium (Re), molybdenum (Mo) and manganese (Mn). | 05-10-2012 |
| 20090187044 | FLUOROSULFONYL GROUP-CONTAINING COMPOUND, METHOD FOR ITS PRODUCTION AND POLYMER THEREOF - A compound containing two fluorosulfonyl groups which are groups convertible to sulfonic acid groups, an intermediate therefor, and methods for their production with high productivity, are provided. Also provided are a fluorosulfonyl group-containing polymer obtained by polymerizing such a compound, and a sulfonic acid group-containing polymer obtained from such a polymer. | 07-23-2009 |
| 20120245386 | SYNTHESIS OF TETRABUTYLAMMONIUM BIS(FLUOROSULFONYL)IMIDE AND RELATED SALTS - The present invention is directed to methods comprising adding ammonia to a sulfuryl fluoride solution to form the anion of bis(fluorosulfonyl)amine under conditions well suited for large-scale production. The bis(fluorosulfonyl)amine so produced can be isolated by methods described in the prior art, or isolated as an organic ion pair, such as an alkylammonium solid salt, or as an ionic liquid. | 09-27-2012 |
| 20120296119 | METHOD FOR PREPARATION OF PERFLUOROALKYL SULFENYL CHLORIDE - The present disclosure provides a process for the preparation of perfluoroalkyl sulfenyl chloride by reacting a compound of formula [I] with at least one fluoride compound and thiophosgene. | 11-22-2012 |
| 562002000 |
Percarboxylic acids or salts thereof (i.e., compounds having the -C(=O)-O OH group, wherein the hydrogen may be replaced by a group IA or IIA light metal, or by substituted or unsubstituted ammonium) | 4 |
| 20090043123 | Dilute Stabilized Peracetic Acid Production and Treatment Process - A process for the rapid production and stabilization of dilute aqueous peracetic acid in which acetic anhydride and hydrogen peroxide are reacted in an aqueous medium with a stoichiometric excess of hydrogen peroxide and the aqueous medium containing the peracetic acid reaction product is adjusted, as necessary, to a pH of less than about 8 to provide a stabilized dilute peracetic acid solution. The dilute peracetic acid may be produced on site or in situ for treatment of an aqueous medium requiring disinfecting, biocidal, antimicrobial or bleaching treatment. | 02-12-2009 |
| 20150291520 | METHOD FOR PRODUCING EQUILIBRIUM PERACETIC ACID AND EQUILIBRIUM PERACETIC ACID OBTAINABLE BY THE METHOD - The invention relates to a method for producing equilibrium peracetic acid by reacting acetic acid with hydrogen peroxide in an aqueous reaction mixture in the presence of methanesulphonic acid as catalyst, and also to the equilibrium peracetic acid obtainable by the method. | 10-15-2015 |
| 20160176815 | GENERATION OF PEROXYFORMIC ACID THROUGH POLYHYDRIC ALCOHOL FORMATE | 06-23-2016 |
| 20090005590 | Production Of Peracids Using An Enzyme Having Perhydrolysis Activity - A process is provided for producing peroxycarboxylic acids from carboxylic acid esters. More specifically, carboxylic acid esters are reacted with an inorganic peroxide, such as hydrogen peroxide, in the presence of an enzyme catalyst having perhydrolysis activity. The present perhydrolase catalysts are classified as members of the carbohydrate esterase family 7 (CE-7) based on the conserved structural features. Further, disinfectant formulations comprising the peracids produced by the processes described herein are provided. | 01-01-2009 |
| 562872000 |
Sulfonic anhydrides (i.e., compounds having the -S(=O)(=O)-O-S(=O)(O=) group | 3 |
| 20090118543 | METHOD FOR PRODUCING TRIFLUOROMETHANESULFONIC ANHYDRIDE - This method for producing trifluoromethanesulfonic anhydride reacting trifluoromethanesulfonic acid with phosphorus pentoxide to produce trifluoromethanesulfonic anhydride, wherein hardening of the reaction solution due to polyphosphoric acid, which is produced as a byproduct, is prevented by using an excess amount of trifluoromethanesulfonic acid with respect to the phosphorus pentoxide. | 05-07-2009 |
| 20100076221 | PREPARATION OF SULFONIC ACID ANHYDRIDES - Sulfonic acid anhydrides, and more particularly triflic anhydride, are prepared by reacting a sulfonic acid or a mixture of two sulfonic acids with a reactant exhibiting acid pseudohalide tautomerism and containing at least one carbon atom which is involved in the tautomerism bearing two halogen atom substituents. | 03-25-2010 |
| 20140323762 | Method for Producing Fluoroalkanesulfonic Anhydride - Disclosed is a method for producing a fluoroalkanesulfonic anhydride, which is characterized by that a reaction is conducted while kneading a fluoroalkanesulfonic acid and diphosphorus pentoxide at a temperature that is 40° C. or higher and is lower than 100° C. by using a kneader-type reactor having a maximum power of 1.0 kW or greater per an actual capacity of 100 L and equipped with at least two-shaft blades, that the fluoroalkanesulfonic anhydride to be generated is discharged, and that, while the residue in the reactor after the discharge is kneaded at a temperature that is 100° C. or higher and is lower than 140° C., the unreacted fluoroalkylsulfonic acid is discharged, recovered and reused as the raw material. It is possible by this method to obtain a fluoroalkanesulfonic anhydride with a high yield. | 10-30-2014 |
| 562026000 |
Thiocarboxylic acids or salts thereof (i.e., compounds having the group -C(=X)XH, wherein the X's are the same or diverse chalcogens and at least one X is sulfur, and hydrogen may be replaced by a group IA or IIA light metal, or by substituted or unsubstituted ammonium) | 2 |
| 20140371483 | PROCESS FOR PREPARING METHYLENE BIS-(DIALKYLAMINO-DITHIOFORMATE) IN ONE STEP - A process for preparing methylene bis-(dialkylamino-dithioformate) in one step includes: simultaneously feeding all or part of four raw materials: dialkylamine, an aqueous solution of sodium hydroxide, dichloromethane and carbon disulfide through a constant-flow pump into a continuous flow reactor; performing the reactions in the continuous flow reactor under a temperature of 10 to 100° C. and with a residence time of 10 to 100 s; simply separating of the obtained reaction products to give the final product. The process synthesizes the product in one step by using the continuous flow reactor. The rapid mass transfer and heat transfer in the continuous flow reactor promote the main reaction, reduce side reactions, improve the product color, and shorten the operation time. Moreover, the yield is relatively high and the quality of the final product meets the requirements. | 12-18-2014 |
| 20100094043 | PROCESS FOR PRODUCING 2-HYDROXY-4-METHYLTHIOBUTANOIC ACID - A highly impact-resistant and corrosion-resistant material is used for an apparatus for use in hydrolysis of 2-hydroxy-4-methylthiobutanamide to obtain 2-hydroxy-4-methylthiobutanoic acid, said material being readily fabricated for an apparatus with a complicated structure and being an alloy which contains 16.0 to 22.0% by weight of a Cr element, 16.0 to 22.0% by weight of a Mo element, 1.0 to 2.5% by weight of a Ta element and a Ni element as the rest, an alloy which contains 26.0 to 32.0% by weight of a Mo element and a Ni element as the rest, or an alloy which contains 0.12 to 0.25% by weight of a Pd element and a Ti element as the rest. | 04-15-2010 |
| 562621000 |
Hydroxamic acids, chalcogen analogs or salts thereof (i.e., compounds having the -C(=X)-N(R)-XH group or the -C(XH)=NXR group, wherein R may be hydrogen or substitution for hydrogen, the X's in each group may be the same or diverse chalcogens, and H of -XH in each group may be replaced by a group IA or IIA light metal, or by substituted or unsubstituted ammonium) | 1 |
| 20110237832 | SYNTHESIS OF HDAC INHIBITORS: TRICHOSTATIN A AND ANALOGUES - Embodiments herein relate to histone deacetylaces (HDACs) and HDAC inhibitors, such as trichostatin A (TSA) and TSA analogues. Embodiments provide simple methods of synthesizing TSA and TSA analogues. These methods provide routes of synthesis of TSA and TSA analogues that enable the production of the HDAC inhibitors at lower cost and in greater quantities than previously were available. | 09-29-2011 |
| 562899000 |
Selenium or tellurium containing | 1 |
| 20150336885 | PROCESS FOR PREPARING 2,2'-SELENOBIARYL ETHERS OR 4,4'-SELENOBIARYL ETHERS USING SELENIUM DIOXIDE - A process for preparing a 2,2′-selenobiaryl ether or a 4,4′-selenobiaryl ether, proceeds by a) adding a first phenol to the reaction mixture, b) adding a second phenol to the reaction mixture, c) adding selenium dioxide to the reaction mixture, d) adding a base having a pKb in the range from 8 to 11 to the reaction mixture, and e) adjusting the reaction temperature of the reaction mixture such that the first phenol and the second phenol are converted to said 2,2′-selenobiaryl ether or said 4,4′-selenobiaryl ether. | 11-26-2015 |
| 562029000 |
Thiosulfonic acids or salts thereof (i.e., compounds containing the thiosulfonate group, -S(=O)(=O)-S-, wherein the divalent sulfur is bonded directly to hydrogen, or to a group IA or IIA light metal or to substituted or unsubstituted ammonium) | 1 |
| 20130116468 | PROCESS FOR PRODUCING AMINOALKYLTHIOSULFURIC ACID COMPOUND - An aminoalkylthiosulfuric acid compound represented by formula (1): | 05-09-2013 |
