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WO/2022/013077A1 |
The invention relates to a method for recovering at least one aliphatic, araliphatic or cycloaliphatic diamine from a mixture containing at least 35 wt.% water and 0.2 to 60 wt.% of the at least one aliphatic, araliphatic or cycloaliphat...
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WO/2021/256417A1 |
A xylylene diisocyanate-holding container 1 comprises xylylene diisocyanate and a container holding the xylylene diisocyanate, wherein a container 2 has a resin layer 4 disposed on the inside surface thereof.
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WO/2021/241557A1 |
A problem of the present invention is to provide a transfer film which can suppress corrosion in wiring and electrodes. Another problem of the present invention is to provide a method for manufacturing a laminate using the transfer film....
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WO/2021/228977A1 |
The present invention relates to a method for operating a plant for continuous production of an isocyanate by converting a primary amine A with phosgene P whilst maintaining, based on the amino groups of the primary amine, a stoichiometr...
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WO/2021/228301A1 |
The invention relates to a process for preparing isocyanates. According to this method, (i) a first organosilicon compound that has at least one silicon atom Si1 and an entity of the formula G-I bonded thereto is, by silylation of the NH...
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WO/2021/215606A1 |
Provided are: a diisocyanate composition comprising two types of diisocyanates and having an adjusted viscosity; and a polymerizable composition and an optical lens produced using the diisocyanate composition.
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WO/2021/210534A1 |
Provided is a urethane compound giving crosslinking agents which give high water-and-oil repellency. The urethane compound is (A) a urethane compound formed from (A1) an isocyanate and (A2) a long-chain alcohol represented by the formula...
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WO/2021/185732A1 |
The present invention relates to a method for purifying a product flow from isocyanate synthesis, wherein the isocyanate which has passed from the product flow into the gas phase is continuously precipitated on a rotating, cooled roller ...
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WO/2021/157701A1 |
Provided are: a thiourethane resin starting material production method comprising a step in which a thiourethane resin and an active hydrogen compound are reacted to produce a thiourethane resin starting material; and a use for the thiou...
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WO/2021/157702A1 |
A polyamine compound production method comprising: a first step in which a thiourethane resin and an amine compound A are reacted to produce a polyurea compound; and a second step in which the polyurea compound and an amine compound B ar...
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WO/2021/148419A1 |
The invention relates to a method for recovering a diisocyanate that is solid at room temperature from a distillation residue originating from a production process of the diisocyanate, comprising the following steps: (i) mixing the disti...
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WO/2021/141002A1 |
The purpose of the present invention is to reduce the dialkylcarbamoyl chloride content of a (meth)acrylic acid ester compound having an isocyanate group. The present invention includes a method for producing a (meth)acrylic acid ester...
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WO/2021/122625A1 |
The invention relates to a method for producing di- and polyisocyanates of the diphenylmethane series, in which (i) the liquid product flow created in the phosgenation, (ii) the reaction mixture present in an optionally provided reactor ...
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WO/2021/103550A1 |
Disclosed is a 1,3-bisisocyanatomethylcyclohexane composition and an optical resin prepared therefrom. The composition comprises, based on the weight of 1,3-bisisocyanatomethylcyclohexane, a) 65%-95wt% of trans-1,3-bisisocyanatomethylcyc...
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WO/2021/100131A1 |
This isocyanate production method, for continuously producing an isocyanate while suppressing side reactions, is a method for producing an isocyanate through the thermal decomposition of carbamate, and comprises: a thermal decomposition ...
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WO/2021/099731A1 |
Method for producing a polymer membrane (10) for potentiometric detection of an analyte, the method comprising the following consecutive steps: - providing a composition comprising a dissolved polymer, an ion exchanger, an ionophore, opt...
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WO/2021/063760A1 |
The invention relates to a process for the distillative purification of a crude isocyanate that is obtained by the phosgenation of a corresponding amine in a distillation apparatus under vacuum, in order to obtain the corresponding isocy...
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WO/2021/052894A1 |
The present invention concerns a method for producing an isocyanate, comprising the steps of (A) reacting an amine with a stoichiometric excess of phosgene, using an aromatic solvent of the formula C6H6–XClX, where X = 1 or 2, (a) as a...
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WO/2021/042251A1 |
The present invention belongs to the technical field of waterborne polyurethane resins, and in particular relates to a method for preparation of a polyisocyanate by a photochemical reaction and a method for preparing a waterborne polyure...
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WO/2021/039660A1 |
The present specification discloses a method for producing an isocyanate compound. The present invention relates to a method for producing a compound represented by formula (2), wherein in the presence of a water-immiscible solvent and w...
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WO/2021/033504A1 |
A method for producing a carbonyl compound by means of a flow reaction, wherein: a triphosgene solution is introduced into a flow path (I); the triphosgene solution comes into contact with a solid catalyst, which is affixed to at least a...
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WO/2021/033505A1 |
A method for producing a carbonyl compound by means of a flow reaction, wherein: a triphosgene solution, a tertiary amine solution and an active hydrogen-containing compound solution are introduced into different flow paths and are cause...
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WO/2021/027953A1 |
Disclosed is a preparation method for preparing diphenylmethane diisocyanate. The preparation method comprises: under a catalyst condition, performing a pyrolysis reaction on diphenylmethane dicarbamate in an inert solvent having a boili...
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WO/2020/262660A1 |
Provided is a method for manufacturing a spectacle lens, the spectacle lens being a cured material formed by curing a polymerizable composition including 5-(isocyanatomethyl)bicyclo[2.2.1]hepto-2-ene and one or more polythiol compounds, ...
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WO/2020/225088A1 |
The invention relates to a method for the purification of at least one isocyanate selected from the group consisting of aliphatic, cycloaliphatic and araliphatic isocyanates and mixtures thereof, to a method for preparing at least one is...
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WO/2020/212510A1 |
The present invention is directed to methods for the asymmetric synthesis of esketamine. The present invention is further directed to key intermediates in the asymmetric esketamine synthesis. In one embodiment, the invention is an asymme...
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WO/2020/196553A1 |
The purpose of the present invention is to provide a method that enables efficient and safe production of an N-substituted trihaloacetamide which also serves as a synthetic intermediate for isocyanate compounds, carbamate compounds, urea...
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WO/2020/132936A1 |
Disclosed is a method for preparing an isocyanate in a gaseous phase, comprising feeding, in the presence or absence of an inert gas, an amine-containing gas stream and a phosgene-containing gas stream into a reaction region, allowing th...
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WO/2020/124622A1 |
Disclosed is a method for preparing isophorone diisocyanate. The method comprises the following steps: (1) reacting isophorone with hydrogen cyanide in the presence of a catalyst to obtain isophorone nitrile; (2) reacting the isophorone ...
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WO/2020/126716A1 |
A method for manufacturing an isocyanate compound represented by formula (2) (2) wherein R1 represents a methyl group,an ethyl group,a cyclopropyl group, a chlorine atom, a bromine atom, or a methoxy group; and R2 represents an alkyl gro...
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WO/2020/099349A1 |
The invention relates to compounds that can be used for producing functional layers of electronic devices, in particular for use in electronic devices. The invention further relates to a process for preparing the compounds according to t...
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WO/2020/100971A1 |
The purpose of the present invention is to provide a method that makes it possible to safely and efficiently produce an isocyanate compound. This production method for an isocyanate compound is characterized by including: a step for irra...
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WO/2020/040049A1 |
This composition includes a compound (A) represented by general formula (1) and a compound (B) represented by general formula (2), wherein the contained amount of the compound (B) is 0.00002-2.0 parts by mass with respect to 100 parts by...
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WO/2020/040048A1 |
This composition includes a compound (A) represented by general formula (1) and a compound (B) represented by general formula (2), wherein the contained amount of the compound (B) is 0.00002-0.2 parts by mass with respect to 100 parts by...
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WO/2020/040050A1 |
Provided are: a composition that has excellent stability during storage and excellent stability during use; and a production method for the composition. The composition according to the present invention includes a compound (A) represent...
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WO/2020/040045A1 |
Provided are: a composition that has excellent stability during storage and excellent stability during use; and a production method for the composition. This composition includes a compound (A) represented by general formula (1), and a c...
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WO/2019/245192A1 |
The present invention relates to a method for preparing aliphatic isocyanates. More particularly, the present invention relates to a method for preparing isocyanates with high purity that can efficiently recover unreacted materials and r...
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WO/2019/235862A1 |
Provided is a method for manufacturing diisocyanate and an optical lens in which, during the manufacture of diisocyanate from diamine via diamine hydrochloride, use is made of an aqueous hydrochloric acid solution and an organic solvent ...
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WO/2019/221210A1 |
Provided are a method for producing a carbamate, said method comprising the following steps (1) and (2), etc.: (1) a step for producing compound (A) having a urea bond by using an organic primary amine having at least one primary amino g...
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WO/2019/207494A1 |
Disclosed is a process for the synthesis of pimavanserin base with a high yield and purity, which comprises: a) converting tert-butyl-N-[(4-propan-2-yloxyphenyl)methyl]carbamate (Formula (I)) to 1-(isocyanatomethyl)-4-propan-2-yloxybenze...
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WO/2019/193073A1 |
The invention relates to a method for recovering monomer diisocyanates, which are solid at room temperature, from a distillation residue, said method comprising the following steps: (i) preparing at least one residue which contains diiso...
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WO/2019/185608A1 |
The present invention relates to a catalyst for preparing carbamates, in particular aromatic carbamates, comprising a binary oxide having the formula Li_xMx02, wherein 1. is a metal selected from the lanthanoid series and M is a metal se...
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WO/2019/155169A1 |
The present invention relates to difunctional biphenyl compounds according to formula (I): in which Alk, Alk' and R are as defined in the description. Said compounds are suitable for use as curing agents for thermosetting resins, particu...
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WO/2019/145380A1 |
The invention relates to a process for the preparation of aliphatic, cycloaliphatic or araliphatic isocyanates by reacting at least one primary organic amine with a stoichiometric excess of phosgene in the gas phase, comprising the steps...
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WO/2019/134909A1 |
The invention relates to a method for producing methylene-diphenylene-diisocyanate and optionally a mixture of methylene-diphenylene-diisocyanate and polymethylene-polyphenylene-polyisocyanate, wherein, in a step α), a fraction (142) co...
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WO/2019/131855A1 |
Provided is a method for collecting a compound represented by general formula (III) (in the formula, R31 is a monovalent to trivalent organic group and n31 is an integer 1-3) from a liquid phase component that is formed as a by-product i...
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WO/2019/132491A1 |
An embodiment relates to an isocyanate composition with improved stability and reactivity and a plastic optical lens using the same. The isocyanate composition has improved stability since the content of chlorine in the composition is ad...
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WO/2019/115213A1 |
The present invention relates to a plant for preparing a purified isomeric methylene diphenyl diisocyanate monomer from a mixture of different isomeric monomers, wherein the plant comprises a distillation apparatus, which comprises: a) a...
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WO/2019/104888A1 |
Disclosed is an imine-type quaternary ammonium salt catalyst, wherein the catalyst has a general structure formula shown by formula I below; in the formula, R1 and R2, respectively, are independently selected from C1-C20 linear alkyl or ...
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WO/2019/076099A1 |
Disclosed are a light color modified isocyanate mixture and a preparation method therefor. The method comprises the following steps: a) reacting isocyanate groups of a raw material isocyanate under the action of a phosphorus heterocyclic...
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