Class / Patent application number | Description | Number of patent applications / Date published |
528367000 | FROM REACTANT HAVING A NITROGEN ATOM DIRECTLY BONDED TO THE CARBON ATOM OF A CARBONYL GROUP, I.E., N-C(=O)- | 19 |
20080293914 | Liquid Nonionic Surfactants for Emulsion Polymerization and Other Applications - The present invention provides a high actives liquid nonionic surfactant concentrate that includes a fatty alcohol alkoxylate having an alkylene oxide content of about 10-100 moles and at least one other nonionic surfactant alkoxylate having an alkylene oxide content of about 4-12 moles. The liquid surfactant concentrate may be utilized in a variety of applications, such as emulsion polymerization or in the formulation of agrochemical compositions. | 11-27-2008 |
20080319161 | METHOD OF PURIFYING A POLYMER - A method for purifying a polymer comprising providing a first mixture comprising at least one solvent and at least one polymeric material, diluting the first mixture with veratrole to produce a second mixture in which the polymeric material is substantially dissolved at a temperature less than 100° C., performing at least one step selected from (i) contacting the second mixture with an aqueous wash solution, and (ii) filtering the second mixture. | 12-25-2008 |
20100041861 | SEMICONDUCTING POLYMERS - A semiconducting polymer of Formula (I): | 02-18-2010 |
20110201777 | PI-ELECTRON CONJUGATED COMPOUND, MANUFACTURING METHOD THEREFOR, AND PI-ELECTRON CONJUGATED POLYMER OBTAINED USING SAME - Provided are a π-electron conjugated polymer having a constitutional unit represented by general formula (2) that is suitable as an electrochromic material that changes from a desired colored state to a decolored state, a new compound that is a raw material of the polymer, and a method for producing the polymer: wherein each X independently represents one selected from the group consisting of an oxygen atom, a sulfur atom, —NH—, and —NR | 08-18-2011 |
20110263813 | POLYBENZIMIDAZOLE COMPOUNDS - A PBI compound includes imidazole nitrogens at least a portion of which are substituted with a moiety containing a carbonyl group, the substituted imidazole nitrogens being bonded to carbon of the carbonyl group. At least 85% of the nitrogens may be substituted. The carbonyl-containing moiety may include RCO—, where R is alkoxy or haloalkyl. The PBI compound may exhibit a first temperature marking an onset of weight loss corresponding to reversion of the substituted PBI that is less than a second temperature marking an onset of decomposition of an otherwise identical PBI compound without the substituted moiety. The PBI compound may be included in separatory media. A substituted PBI synthesis method may include providing a parent PBI in a less than 5 wt % solvent solution. Substituting may use more than 5 equivalents in relation to the imidazole nitrogens to be substituted. | 10-27-2011 |
20130296525 | METHOD FOR THE PREPARATION OF HIGHLY PURIFIED RECYCLED NYLON - The present invention relates to the recovery of nylon from co-mingled materials (e.g., carpet) with reduced or eliminated ash (e.g., calcium carbonate) contamination. | 11-07-2013 |
20140051826 | NOVEL COMPOUND FOR CARRIER TRANSPORT, ELEMENT AND ELECTRONIC DEVICE USING THE SAME - The present invention provides a compound of formula I | 02-20-2014 |
20140316100 | METHOD FOR PREPARING POLYMETHYLENE POLYPHENYL POLYCARBAMATE - A method for preparing polymethylene polyphenyl polycarbamate is provided, which is carried out through the condensation of phenylcarbamate with a methylating reagent under the catalyzation of a phase transfer acid catalyst. The method comprises: dissolving phenylcarbamate in a water-immiscible organic solvent to form a solution A; formulating an aqueous acid catalyst solution to fibrin a solution B; forming a reaction system comprising an organic phase and an aqueous phase by firstly adding a methylating reagent to the solution B and then mixing the solution A and the solution B or by adding the methylating reagent at the same time of mixing the solution A and the solution B or after mixing the solution A and the solution B; reacting the reaction system under stirring at a reaction temperature of 30° C. to 200° C. and a reaction pressure of 0.05 MPa to 5 MPa; and separating a polymethylene polyphenyl polycarbamate product mixture by allowing the organic phase and the aqueous phase to stand still and stratify. The method can realize the high selectivity and yield of the product and is easy to separate the product. | 10-23-2014 |
20150119549 | MALEIMIDE-TERMINATED SULFUR-CONTAINING POLYMERS, COMPOSITIONS THEREOF, AND USES THEREOF - Sulfur-containing polymer adducts such as polythioethers, polysulfides, and sulfur-containing polyformals having terminal maleimide groups, and in particular, sulfur-containing polymers and sulfur containing adducts having terminal 1,1′-(methylenedi-4,1-phenylene)bismaleimide groups are disclosed. The adducts provide cured sealants having improved tensile strength and elongation and are useful as aerospace sealants. | 04-30-2015 |
20160075831 | SEQUENCE-DEFINED POLYMERS AND METHODS OF MAKING SAME AND USING SAME - Methods of making sequence-defined polymers and sequence-defined polymers. The methods are based on the orthogonal reactivity of monomers having at least two different functional groups. The sequence-defined polymers can be used in various applications. For example, the SDPs (e.g., pH sensitive SDPs) are used in cell lysis methods or as molecular vehicles to transport drug cargo into cells. | 03-17-2016 |
20160083396 | SYNTHESIS OF ISOHEXIDE DICARBAMATES AND DERIVATIVES THEREOF - Isohexide dicarbamates and a method of preparing the same are described. The method involves reacting a mixture of an isohexide and a cynate salt in a non-aqueous solvent, with a miscible acid having a pKa of about 3.7 or less. The isohexide dicarbamates can serve as precursor materials from which various derivative compounds can be synthesized. | 03-24-2016 |
20190144372 | METHODS FOR PRODUCING POLYCYCLIC AROMATIC AMINOPHENOL COMPOUND AND RESIN COMPOSITION, AND POLYCYCLIC AROMATIC AMINOPHENOL COMPOUND, RESIN COMPOSITION, AND CURED PRODUCT | 05-16-2019 |
528368000 | Polymerizing in the presence of a specified material other than a reactant | 5 |
20080275211 | METHOD OF MAKING HALOPHTHALIC ACIDS AND HALOPHTHALIC ANHYDRIDES - A method of preparing a halophthalic acid is disclosed which comprises the steps of contacting in a liquid phase reaction mixture at least one halogen-substituted ortho-xylene with oxygen and acetic acid at a temperature in a range between about 120° C. and about 220° C. in the presence of a catalyst system yielding a product mixture comprising less than 10 percent halogen-substituted ortho-xylene starting material, a halophthalic acid product, and less than about 10,000 ppm halobenzoic acid and less than about 1000 ppm halophthalide by-products based on a total amount of halophthalic acid present in the product mixture. In addition methods for the preparation of halophthalic anhydride, and recovery of high purity acetic acid from an aqueous acetic acid stream comprising HCl, which is generated during the preparation of the halophthalic acid are also disclosed. | 11-06-2008 |
20100168377 | Catalytic conversion of amide compounds to methyl ether polymers and methyl ether ladder polymers - Catalytic processes have been developed for direct chemical conversion of amides to methyl ether polymers or methyl ether ladder polymers. Amides formed by reacting acetic acid with monoethanol amine (MEA) or acetic acid with butylamine were polymerized in the presence of transition metal catalysts in air to form linear polymers. Ethanol acetamide was catalytically converted to a linear polyether as characterized by FTIR spectra. The catalysts were based on molecular strings of mono-, di- or tri-valent transition metal compounds that opened the amide carbonyl double bond to produce linear polyethers. Laboratory results have demonstrated [cobalt(II)] | 07-01-2010 |
20120065361 | Poly(Arylene Sulfide) and Production Process Thereof - The invention provides a production process of a poly(arylene sulfide), comprising a polymerization step of subjecting at least one sulfur source selected from the group consisting of alkali metal sulfides and alkali metal hydrosulfides and a dihalo-aromatic compound to a polymerization reaction in an organic amide solvent; a reaction step of adding a hydroxyl group-containing organic compound containing no bonded halogen atom in a proportion of 0.001 to 20 mol per 100 mol of the charged sulfur source into the polymerization reaction system containing the organic amide solvent and a formed polymer after the polymerization step to cause the formed polymer to react with the hydroxyl group-containing organic compound; and a collecting step of collecting a polymer from the polymerization reaction system after the reaction step, and the poly(arylene sulfide). | 03-15-2012 |
20140080994 | PROCESS FOR THE PRODUCTION OF POLYMERS BY USING COUPLING REACTIONS - The present invention relates to a continuous process for the production of polymeric coupling products by using a reactor assembly which is equipped with two or more reaction cells. The educt fluid is pumped through the reaction cells and thoroughly mixed therein by means of agitators. Preferably the process according to the invention is used for the preparation of coupling products which show at least partially precipitation and/or gelation effects during the performance of the synthesis. The precipitation and/or gelation effects are associated with and increase of the viscosity of the reaction system under reaction conditions. The products which are obtained by the process according to the invention have increased molecular weight and low polydispersity over similar products which were obtained in batch experiments. | 03-20-2014 |
20160083517 | CARBAMYLATION COMPOSITIONS OF MONOVALENT METAL CONTAINING CATALYSTS, POLYOLS AND UREA COMPOUNDS AND CARBAMYLATION PROCESSES USING THE SAME - The present invention provides carbamylation compositions of one or more urea compounds, one or more polyols and a monovalent transition metal or alkali metal catalyst (i), such as lithium ethylhexanoate, which compositions are substantially isocyanate free, enjoy reduced toxicity in comparison to tin catalysts, and which are useful in making polycarbamates which themselves provide compositions for making crosslinked polyurethanes. | 03-24-2016 |
528369000 | N-C(=O)-OH containing reactant or ester, salt, anhydride, or acyl halide thereof | 2 |
20130072656 | CURABLE FLUOROELASTOMER COMPOSITION - Fluoroelastomer compositions comprising fluoroelastomers having copolymerized units of a nitrile-containing cure site monomer are cured with certain hydrazide curatives. The hydrazide is of the general formula R | 03-21-2013 |
20160031842 | SYNTHESIS OF ISOHEXIDE DICARBAMATES AND DERIVATIVES THEREOF - Dicarbamates of the reduction products of 2-hydroxymethyl-5-furfural (HMF) and a method of preparing the same are described. The method involves reacting a mixture of an isohexide and a cynate salt in a non-aqueous solvent, with a miscible acid having a pKa of about 3.7 or less. The dicarbamates of HMF-reduction products can serve as precursor materials from which various derivative compounds can be synthesized. | 02-04-2016 |