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| Number | Title | Issue Date |
| 8067587 | Process for the production of monoalkali metal cyanurates A process for making monoalkali metal cyanurates in a powdery form from a cyanuric acid powder by adding thereto a concentrated aqueous solution of an alkali hydroxide such as sodium or potassium hydroxide. The concentrated aqueous alkali hydroxide solution is added... | 11/29/2011 |
| 7728132 | Compositions for stabilizing chlorinated water to sunlight decomposition, and methods of preparation thereof The invention includes a composition for stabilizing chlorinated water to sunlight decomposition, and methods of preparing compositions. The composition is a slurry composition of a monoalkali metal cyanurate, of low viscosity. Two methods of preparing the slurry ar... | 06/01/2010 |
| 7531652 | Process for preparation of solid tris (2,3-dibromopropyl) isocyanurate The present invention is directed to a process for the isolation of tris(2,3-dibromopropyl)isocyanurate. The process uses an adsorbent which promotes easy conversion into a solid form of TDPI. The invention also includes to the solid TDPI product prepared in this wa... | 05/12/2009 |
| 7456280 | Maleimide resin with cyanurate core Isocyanurate compounds or resins have the structure (I) in which Y is an hydroxyl group —OH or a maleimide group Formula (II) provided that at least one maleimide group is present, and Q is any divalent organic moiety, aliphatic or aromatic. | 11/25/2008 |
| 7442325 | Stabilized crosslinking composition This invention relates to a crosslinking composition comprising an organic acid and a compound having the structure of Formula I: A′-NRA—RD wherein A′, RA, and RD are defi... | 10/28/2008 |
| 7381347 | Crosslinking composition This invention relates to a crosslinking composition comprising a compound having the structure of Formula I: A′-NRA—RD where A′ is a moiety derived from the group consisting of linear or cyclic ureas, cyanuric acid, s... | 06/03/2008 |
| 7201225 | Conserving components of fluids A cavitation device is used to heat, concentrate and recycle or otherwise reuse dilute and other oil well fluids, brines and muds, and solution mining fluids, all of which commonly contain ingredients worthy of conservation. The cavitation device is powered by a Die... | 04/10/2007 |
| 6936678 | Process for preparing low-monomer-content TDI trimers The invention relates to a novel process for preparing low-monomer-content trimers based on 2,4- and 2,6-diisocyanatotoluene (TDI) and to the use thereof in coatings. The trimers are produced from a mixture of from 20 to 80% by weight of diisocyanate component conta... | 08/30/2005 |
| 6641784 | Optically active isocyanurate and optical resolver comprising derivative of the same An optical resolver comprising an optically active substance made of tris-(2,3-epoxypropyl)isocyanurate, is presented. The optical resolver comprises an optically active tris-(epoxyalkyl)isocyanurate or its derivative, or an optically active derivative of... | 11/04/2003 |
| 6605717 | Optically active epoxy compound Optically active ଲ-type tris-(2,3-epoxypropyl)-isocyanurate is obtained by a method of reacting isocyanuric acid with an optically active epihalohydrin, or a method of optically resolving a racemic modification of tris-(2,3-epoxypropyl)-isocyanurate... | 08/12/2003 |
| 6555656 | Covalent modification of abnormal prion protein A prion-physiological structure and associated method of formation. A provided abnormal prion has a transforming power over a normal prion to convert the abnornal prion into defective prion that mimics the abnormal prion. A linker molecule is then bonded ... | 04/29/2003 |
| 6444814 | Optically active epoxy compound Optically active ଲ-type tris-(2,3-epoxypropyl)-isocyanurate is obtained by a method of reacting isocyanuric acid with an optically active epihalohydrin, or a method of optically resolving a racemic modification of tris-(2,3-epoxypropyl)-isocyanurate... | 09/03/2002 |
| 5624981 | Polyalkylpiperidine containing acetic acid and 3-amino-acrylic acid derivatives Polyalkylpiperidine-containing acetic acid and 3-aminoacrylic acid derivatives I ##STR1## where R1 is hydrogen, C1 - to C6 -alkyl, formyl, C2 - to C6 -alkanoyl, C1 - to C12 ... | 04/29/1997 |
| 5578723 | Process for preparing cyanuric acid by seperation from an isocyanic acid/ammonia gas mixture A process for preparing cyanuric acid by cooling an isocyanuric acid/ammonia gas mixture having a temperature of 300° to 480° C. to 200°-300° C., whereupon cyanuric acid is separated off and isolated at this temperature in an apparatus suitable f... | 11/26/1996 |
| 5556864 | -ω-diarylalkane compounds serotonin-2 receptor agonists Compounds of formula (I): ##STR1## [wherein: R1 is aryl; R2 is hydrogen, alkyl, alkoxy, halogen or cyano; R3 is a group of formula --B--NR4 R5, where R4 and R5 are independe... | 09/17/1996 |
| 5493023 | Granular melamine cyanurate and preparation process thereof Melamine cyanurate is prepared by heating melamine powder and cyanuric acid powder at 250° to 500° C. substantially in the absence of any liquid medium. The melamine cyanurate can be obtained in a granular form when the heating is conducted subsequent t... | 02/20/1996 |
| 5466429 | Process for preparing isocyanic acid from cyanuric acid Process for preparing isocyanic acid by bringing cyanuric acid into contact with an aluminum catalyst at temperatures of from 300° to 600° C. and isolating the isocyanic acid formed or directly using it for further reaction.... | 11/14/1995 |
| 5245033 | Process for producing cyanuric acid The plant is provided with a first rotary reactor where the balls of urea cyanurate are formed and a second reactor where the pyrolysis takes place. The first reactor is provided with an internal helical fin and the second reactor is also rotary. At the e... | 09/14/1993 |
| 5206332 | Curing agent for the production of low gloss powder coatings based on epoxy resins A curing agent for the production of low gloss powder coatings based on epoxy resins consists essentially of a mixture of the components a) 2-imidazoline derivative having a melting point of >60° C. and b) cyanuric acid as well as, if desired, anticaking... | 04/27/1993 |
| 5084459 | Tetrahydropyrimidines, their production and use There is provided a pest control composition containing a compound represented by the formula, ##STR1## wherein R1, R2, R3 and R4 are the same or different and independently mean a hydrogen atom, a hydrocar... | 01/28/1992 |
| 4963674 | Purification of cyanuric acid A process for the purification of crude cyanuric acid containing aminotriazine compounds as impurities which comprises digesting the crude cyanuric acid in an aqueous solution containing low concentrations of a mineral acid. The mineral acid is, for examp... | 10/16/1990 |
| 4906747 | Process for producing a metal phthalocyanine and/or its derivative In a process for producing a metal phthalocyanine and/or its derivative by heating phthalic anhydride and/or its derivative, urea and a metal compound in an organic solvent in the presence of a catalyst, or by heating phthalodinitrile and a metal or a met... | 03/06/1990 |
| 4894452 | Cyanuric acid production by controlled pyrolysis of biuret The process of producing from urea a reaction product which is predominantly cyanuric acid, which process involves only the application of heat without use of solvents or catalysts. The process in its first stage involves heating molten urea for a time an... | 01/16/1990 |
| 4656271 | Process for producing cyanuric acid from urea hydrohalides A process for producing cyanuric acid which comprises feeding a urea hydrohalide compound to a pyrolysis zone. The urea hydrohalide compound is pyrolyzed to produce a solid reaction mixture of cyanuric acid and an ammonium halide. The solid reaction mixtu... | 04/07/1987 |
| 4645577 | Production of cyanuric acid There is disclosed a method for the conversion of urea to cyanuric acid and cyclic by-products which comprises exposing urea in a liquid state to microwave radiation. Urea in liquid form, either molten anhydrous or in solution, is absorbent to microwave r... | 02/24/1987 |
| 4621143 | Cockroach repellants A number of novel amides were found to be highly effective as cockroach repellents.... | 11/04/1986 |
| 4603200 | Process for concentrating dilute slurries of cyanuric acid compounds A process is described for concentrating a dilute slurry of s-triazine compounds in a liquid phase which comprises: (a) passing said dilute slurry across an enclosed surface of a porous medium (b) at an elevated pressure (c) and at a flow rate of at least abou... | 07/29/1986 |
| 4587334 | Process for making cyanuric acid The disclosure relates to a process for making granulated cyanuric acid. To this end, the disclosure provides for cyanuric acid granules having the particle size targeted for the final product to be used as feed material, for the said feed material, urea ... | 05/06/1986 |
| 4574154 | Triazine addition compounds A triazine addition compound consisting essentially of one mole of a triazine derivative having the formula (I): ##STR1## in which R is a divalent hydrocarbon residue containing 1-12 carbon atoms, and one or two moles of at least one compound selecte... | 03/04/1986 |
| 4567258 | Process and apparatus for producing cyanuric acid A process is provided to produce a solution or slurry of cyanuric acid in an inert solvent essentially free from by-product impurities from an aqueous solution of urea and/or biuret. Optionally, the cyanuric acid product may be separated from the inert so... | 01/28/1986 |
| 4474957 | Process for producing cyanuric acid from urea There is disclosed a process for producing cyanuric acid from urea using an external heating type reaction vessel furnished with agitator provided with plural urea supply ports in the direction of conveyance of the contents at such an interval as to make ... | 10/02/1984 |
| 4455423 | Process for the manufacture of cyanuric acid by heating urea at a temperature above its melting point In a process for the manufacture of cyanuric acid by heating urea at a temperature above its melting point, an aqueous solution of urea is sprayed onto granules of crude cyanuric acid, recycled externally, and heated at a temperature of 220°-280° C. in ... | 06/19/1984 |
| 4423216 | Preparation of cyanuric acid A highly pure cyanuric acid is produced by a process which comprises gradually adding a nitrogenous material capable of producing cyanuric acid, such as urea, to a hot N-methylpyrrolidone solvent. The overall process converts substantially all of the urea... | 12/27/1983 |
| 4360671 | Preparation of cyanuric acid A highly pure cyanuric acid produced by pyrolyzing a nitrogenous containing material capable of yielding cyanuric acid, such as urea, in an alkyl dinitrile solvent such as adiponitrile, at elevated temperatures, is disclosed. The overall process converts ... | 11/23/1982 |
| 4359575 | Process for trimerizing isocyanic acid to make cyanuric acid Isocyanic acid is trimerized to cyanuric acid by contacting the isocyanic acid with liquid organic solvent, preferably polar solvent having high dielectric constant. The product is recovered as precipitate of good purity. Conversion and yield are high.... | 11/16/1982 |
| 4356303 | Single step process for cyanuric acid Cyanuric acid is produced in a process in which a solution of urea or biuret is pyrolyzed by contacting the solution with a heated gas at temperatures which substantially pyrolyze urea or biuret while concurrently evaporating the solvent. The novel proces... | 10/26/1982 |
| 4340639 | Synthetic paper comprising an olefin-based resin and an adduct A synthetic paper prepared by stretching a sheet of a composition comprising a thermoplastic resin mainly composed of an olefin-based resin and an adduct of melamine and isocyanuric acid or cyanuric acid to a size of 1.3 times or more the original size of... | 07/20/1982 |
| 4294962 | Continuous process for the manufacture of cyanuric acid A highly-pure cyanuric acid is manufactured in a continuous process whereby urea and/or biuret are dissolved in an inert solvent and circulated at a high velocity and a temperature in the range of about 180° C. to about 250° C. through a loop between a ... | 10/13/1981 |
| 4282359 | Purification of cyanuric acid Cyanuric acid is mechanically separated such as by filtration, centrifugation, or centrifugal filtration from a slurry of cyanuric acid, urea, biuret, and an inert solvent in which the urea is soluble at temperatures above about 170° C. to reduce the ure... | 08/04/1981 |
| 4278794 | Process for preparing pure cyanuric acid Pure cyanuric acid is prepared from crude or waste melamine by introducing the melamine into 70 to 80% strength sulfuric acid at room temperature and heating the reaction mixture to 150° to 190° C., the water introduced with the sulfuric acid being dist... | 07/14/1981 |
