| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 528230000 | FROM ALDEHYDE OR DERIVATIVE THEREOF AS REACTANT | 45 |
| 20080207865 | Method for Producing Polyoxymethlenes - Process for preparing polyoxymethylene copolymers (POMs) by a) polymerizing a reaction mixture comprising suitable main monomers and comonomers and also a polymerization initiator and, if appropriate, a regulator, b) adding a deactivator and c) removing the residual monomers, wherein the amount of compounds whose melting point at 1013 hPa is below 60° C. present in the reaction mixture at any point in time during the process is not more than 0.1% by weight, with the POM, the monomers, comonomers, polymerization initiators, deactivators and regulators not being included in the calculation. | 08-28-2008 |
| 20100041854 | METHOD FOR ADHESION OF RESIN MATERIAL COMPRISING OXYMETHYLENE POLYMER, AND STRUCTURE - Provided are a method of bonding resin materials for bonding a resin material (X) containing an oxymethylene-based polymer (A) and a resin material (Y), and a structure obtained by the bonding method. The method includes the steps of: preparing as the resin material (Y) an oxymethylene-based polymer composition (B) satisfying the following conditions (1) and (2); or preparing as the resin material (Y) the resin material (X) or another resin material and providing the oxymethylene-based polymer composition (B) between the resin material (Y) and the resin material (X); and heating the resin materials: (1) the oxymethylene-based polymer composition (B) has a melting point lower than that of the oxymethylene-based polymer (A), and a difference in melting point between the composition and the polymer is smaller than 5° C.; and (2) 50% or more of a peak area determined from a peak showing the molten state of the oxymethylene-based polymer composition (B) measured by DSC is present in a temperature region lower than the peak temperature of the oxymethylene-based polymer (A) by 5° C. or more. | 02-18-2010 |
| 20100298522 | PROCESS FOR PRODUCING CARBON MATERIAL - A process for producing a carbon material comprising the following steps (A) and (B): Step (A): a step of reacting a compound represented by the formula (1): wherein R represents a hydrogen atom etc., R′ represents a hydrogen atom etc., and n represents 3, 5 or 7, with an aldehyde compound to obtain a polymer, Step (B): a step of heating the polymer obtained in Step (A) at 600 to 3000° C. under an inert gas atmosphere. | 11-25-2010 |
| 528232000 | Polymerizing in the presence of a specified material other than a reactant | 12 |
| 20090036636 | METHOD FOR PRODUCING POLYVINYL ACETAL RESIN - A method for producing a polyvinyl acetal resin is provided which is characterized in that a polyvinyl alcohol and a carbonyl compound are reacted at 40 to 200° C. in a liquid containing water and/or an alcohol as solvents in the presence of an acid catalyst including carbon dioxide. By this method, a polyvinyl acetal resin having a halogen element content of ppm or less and an alkali metal element content of 1000 ppm or less can be obtained without particularly performing washing operations. Therefore, a method for producing a polyvinyl acetal resin containing only little impurities such as metal salts and acids is provided. | 02-05-2009 |
| 20130317194 | PROCESS FOR PREPARING CONDENSATION RESINS - The present invention relates to a new process for preparing condensation resins, constructed formally from urea, formaldehyde, and CH-acidic aldehydes. | 11-28-2013 |
| 20130331541 | Melamin-verstarkte UF-Leime mit bis zu 0,9% Melamin fur die Herstellung von mitteldichten Faserplatten - The present invention relates to a process for producing melamine-urea-formaldehyde resins with up to 0.9% of melamine by reacting
| 12-12-2013 |
| 20160115270 | PROCESS FOR PREPARING POLYOXYMETHYLENE - The patent application relates to a process for preparing polyoxymethylene by polymerization of a reaction mixture (R | 04-28-2016 |
| 20160122459 | METHOD FOR PRODUCING POLYACETAL COPOLYMER - A high-quality polyacetal copolymer produced by a simple process in an economical manner. The process includes supplying a raw material including trioxane and the like to a reaction device; setting the polymerization environmental temperature to no more than 100° C. until the reaction device conversion rate becomes 0.5, and then carrying out further polymerization; vaporizing and separating unreacted monomers from the reaction mixture at an environmental temperature of at least 115° C. and less than 140° C.; supplying the separated monomers to the raw material supply; and recovering the polyacetal copolymer from the reaction mixture. | 05-05-2016 |
| 528233000 | Material contains a metal atom | 5 |
| 528234000 | Material contains a transition metal atom | 3 |
| 20150337070 | METHOD FOR PRODUCING FORMALDEHYDE/CO2 COPOLYMERS - The invention relates to a method for producing non-alternating formaldehyde/CO2 copolymers, said method comprising the step of reacting formaldehyde or a compound that releases formaldehyde with carbon dioxide in the presence of a catalyst system. Said method is characterised in that the catalyst system comprises a Lewis acid component and a basic component, the Lewis acid component being at least temporarily coordinatively unsaturated under reaction conditions and the basic component having a pKb value of >=0. | 11-26-2015 |
| 20160075815 | METHOD FOR PRODUCING POLYACETAL COPOLYMER - A high-quality polyacetal copolymer produced by a simple process and in an economical manner. The method includes supplying a raw material including trioxane or the like to a reaction device; obtaining a reaction mixture by carrying out a polymerization reaction of the raw material in the state where the rotating shafts are inclined by 1 to 6° upwards with respect to the horizontal direction H from the introduction opening towards a polyacetal copolymer recovery portion; vaporizing and separating an unreacted monomer from the reaction mixture using a vaporization and separation portion; re-supplying the unreacted monomer to the reaction device; and recovering the polyacetal copolymer from the reaction using a polyacetal copolymer recovery portion. | 03-17-2016 |
| 528235000 | Transition metal atom is a Group VIII metal atom | 1 |
| 20110077378 | Oxymethylene Polymers and Process for the Preparation Thereof - The present invention relates to a process for the preparation of oxymethylene polymers as well as oxymethylene polymers obtainable therefrom. The process includes polymerization of a monomer, which forms —CH | 03-31-2011 |
| 528238000 | Material contains an aluminum atom | 1 |
| 20120123085 | PROCESSES FOR PREPARING DIACIDS, DIALDEHYDES AND POLYMERS - Alcohols are catalytically oxidized to aldehydes, in particular to benzaldehyde and diformylfuran, which are useful as intermediates for a multiplicity of purposes. The invention also relates to the polymerization of the dialdehyde and to the decarbonylation of the dialdehyde to furan. | 05-17-2012 |
| 528239000 | Material contains a Group IA metal atom (Li, Na, K, Rb, Cs, Fr) | 1 |
| 20110263809 | PROCESS FOR PRODUCTION OF DI- AND POLYAMINES OF THE DIPHENYLMETHANE SERIES - Process for the production of di- and poly(diamino diphenyl methane) comprising the steps of
| 10-27-2011 |
| 528242000 | Material contains a phosphorus or sulfur atom | 1 |
| 20090275724 | IONIC LIQUIDS IN THE PREPARATION OF POMS - Process for preparing polyoxymethylenes by polymerization of the monomers a) in the presence of cationically active initiators b) and, if appropriate in the presence of regulators c) and subsequent deactivation d) and discharge from the reactor, wherein at least one ionic liquid is used as initiator b). | 11-05-2009 |
| 528243000 | Material contains nitrogen as part of a nitrogen-containing compound | 1 |
| 20120116047 | PROCESS FOR PREPARING CONDENSATION RESINS AND THE USE THEREOF - The present invention relates to new condensation resins formed from urea, formaldehyde and CH-acidic aldehydes, to processes for preparing them, and to use thereof. | 05-10-2012 |
| 528244000 | Fluorine- or phosphorus-containing reactant | 2 |
| 20090036637 | AMINOPHOSPHINATE POLYMERS - The present invention provides an aminophosphonate mid functional co-polymer, or oligomer thereof, a method for its manufacture and a number of applications for it. The aminophosphonate co-polymer is of the formula (I): (A) | 02-05-2009 |
| 20110207908 | PHOSPHORUS-CONTAINING BEXZOXAZINE RESIN WITH VARIOUS SUBSTITUENTS AND METHOD FOR PREPARING THE SAME - The present invention provides a method for preparing a phosphorus-containing bexzoxazine resin having the following structure shown as the formula (I) or (V): | 08-25-2011 |
| 528245000 | From glyoxal or compound having two or more -C(=O)-H groups per se | 2 |
| 20120004386 | CONJUGATED THIOPHENES HAVING CONDUCTING PROPERTIES AND SYNTHESIS OF SAME - The present invention relates to conjugated oligomers and polymers comprising aromatic thiophene cores. The conjugated materials are obtained by simple and efficient condensation of an aryl diamine and an aryl dialdehyde or a bifunctional aryl moiety comprising both an aldehyde and an amine. Condensation of the complementary moieties at temperatures ranging from ambient to refluxing temperatures in various solvents resulted in conjugated oligomers and polymers that can subsequently be cast into thin films. Oligomerization and polymerization can be done under mild conditions with removal of the resulting water bi-product responsible for shifting the equilibrium in favour of the conjugated products. The resulting conjugated compounds can be made conducting with dopants affording electrically conducting materials of either p-type or n-type conductors depending on the dopant selected. | 01-05-2012 |
| 20120088897 | EXTREME LOW FORMALDEHYDE EMISSION UF RESIN WITH A NOVEL STRUCTURE AND ITS PREPARATION - The present invention relates to an extreme low formaldehyde emission UF resin with a novel structure, and a process for its preparation. This UF resin is produced from formaldehyde, urea, a long chain multi-aldehyde prepolymer, and some modifiers. Its process follows three steps: weak caustic, weak acid and weak caustic. By using this prepolymer, the modified UF resin has stable alkyl ether structure, and the residual aldehyde groups on the UF polymer chain could accelerate cross-linking instead of dissociative formaldehyde. The UF resin made from this invention has extreme low dissociative formaldehyde and simple technology. The boards produced from this resin have good physical performance and water resistance. Moreover, the formaldehyde emission of the boards is extreme low, achieving Japan F⋆⋆⋆⋆ grade, the average emission value≦0.3 mg/L. | 04-12-2012 |
| 528246000 | Ethylenically unsaturated reactant other than unsaturation solely in heterocyclic ring containing only oxygen as hetero atom | 7 |
| 20080207866 | Radiation-Curable Binder - The present invention relates to a radiation-curable binder obtainable by reacting A) amine-formaldehyde condensates with a molar ratio of formaldehyde to amino groups of 1:6 to 2:1 with B) a mixture of butanediol monoacrylate and 2-hydroxethyl methacrylate in a ratio of 0.1:100 to 100:0.1, using 0.1 to 1.5 hydroxy equivalents of component B) per methylol equivalent of component A). The present invention further relates to a curable coating composition which comprises the binder of the invention and to a coated article produced using the coating composition. | 08-28-2008 |
| 20090093609 | Polyvinyl Acetal-Based Resin - The present invention provides a polyvinyl acetal-based resin which has a high elastic modulus, is excellent in solubility to an alcoholic solvent, and gives a highly transparent alcohol solution. The polyvinyl acetal-based resin is obtained by acetalizing a polyvinyl alcohol-based resin (A) which has 0.1 to 1.5% by mol of a 1,2-diol structural unit represented by the following general formula (1) and a degree of saponification of 98.5% by mol or more: | 04-09-2009 |
| 20090312516 | HIGHLY ACETALIZED, COARSE-GRAINED POLYVINYL ACETOACETALS - The invention relates to highly acetalized, coarse-grained polyvinyl acetals with a degree of acetalization of >80 mol % and an average grain size of ≧100 μm obtainable by acetalization of partially or fully hydrolyzed polyvinyl esters with a degree of hydrolysis of ≧70 mol % with acetaldehyde, characterized by the fact that the acetalization is started at a temperature T | 12-17-2009 |
| 20100010190 | CURABLE RESIN COMPOSITION - In general, the invention provides curable resin compositions that may be used to rebuild insulation and/or to provide environmental protection for cable splices, potted articles, and the like. The curable resin compositions can be curable at room temperature. The components used to form and cure the resin compositions may be provided in two or more parts. In specific embodiments, the invention provides curable resin compositions having anhydride, polyol, epoxy, and urethane components. | 01-14-2010 |
| 20100267921 | Continuous Production Of Poly(vinyl butyral) - The present invention provides a method for continuously producing poly(vinyl butyral) in which the acetalization of poly(vinyl butyral) is carried out using a poly(vinyl alcohol) varnish provided to a mixing region of a high shear mixer at an elevated temperature, which reduces the amount of energy required compared to conventional processing because at least one cooling and heating cycle is eliminated, or makes the recuperation of energy more straightforward. | 10-21-2010 |
| 20120329979 | COPOLYMER CONTAINING FLUORENYLPORPHYRIN-BENZENE, PREPARATION METHOD AND USE THEREOF - A copolymer containing fluorenylporphyrin-benzene is disclosed, which comprises a copolymer represented by formula (1), in which R | 12-27-2012 |
| 20130310536 | CATIONIC POLYMERS FORMED FROM AMINO GROUP-BEARING MONOMERS AND HETEROCYCLIC LINKERS - The present invention is directed to a design of and a method to synthesize polycations for gene (DNA and RNA) delivery. According to this design, the polycations (also said cationic polymers) are formed by polymerization of endogenous monomers bearing sufficient amino groups through degradable bonds with linker molecules. The amino group-bearing monomers are those naturally existing or nontoxic to human body. The linker molecules are those which are not only degradable to nontoxic fragments but also able to release the amino group-bearing monomers in their native state upon degradation. Some examples for the endogenous amino group-bearing monomers are spermine and spermidine (or their derivatives). Examples for the degradable chemical bonds formed between the amino group-bearing monomers are imines. In order to improve degradability or proton sponging effect, low pKa (<8) amino group(s), free amino groups generated by polymer degradation (such as those generated by degradation of imine linkages), or other electron donating group(s) such as imidazole, pyrazole, pyridine, pyrimidine, or even benzene is incorporated in the linker between the two (or three) reactive groups for linking the amino group-bearing monomers. These polycationic carrier systems can be used for nano-encapsulation and transfection of gene materials. | 11-21-2013 |
| 528248000 | With heterocyclic reactant which is not an aldehyde or derivative | 11 |
| 20140114045 | 2-PYRROLIDONE POLYMER OR COPOLYMER HAVING MODIFIED PHYSICAL PROPERTIES, AND MANUFACTURING METHOD FOR SAME - Disclosed is a 2-pyrrolidone polymer or copolymer having optionally substituted methylol groups, and a process for producing the 2-pyrrolidone polymer or copolymer having methylol groups, the process comprising reacting a 2-pyrrolidone polymer or copolymer with an aldehyde. | 04-24-2014 |
| 528249000 | Nonaldehyde or nonaldehyde derivative heterocyclic compound contains an oxygen atom as a ring member of the heterocyclic compound | 4 |
| 20080234459 | Process for Preparing Polyoxymethtylene Homopolymers or Copolymers - A process for preparing polyoxymethylene homopolymers or copolymers by homopolymerization or copolymerization of trioxane or additionally of suitable comonomers, in which
| 09-25-2008 |
| 20110021740 | FURAN BASED RESIN, PROCESS FOR THE PREPARATION THEREOF, AND USE OF THE COMPOUND - The present invention relates to the polymeric reaction product of compounds according to Formula (I) and Formula (II) or (III). Formula (I) has the following structure: where R | 01-27-2011 |
| 20160053053 | FLAME RETARDANT PHT COMPOSITIONS - Hexahydrotriazine (HT) materials and hemiaminal (HA) materials derived from aromatic, aliphatic, and/or polyether diamines may he used as a platform for creating flame retardant materials. Various flame retardant material precursors may he incorporated into the HA and HT materials. Examples of flame retardant precursors may include organohalogen materials, organophosphorous materials, malamines, and dianiline compounds, among others. The flame retardant materials and precursors may he single molecule species, oligomers, and/or polymers (i.e., polyhexahydrotriazine, PHT, polyhemiaminal, PHA). The flame retardant materials may he made using an aromatic diamine, an aliphatic diamine, a polyether diamine, or a mixture thereof to react with an aldehyde (i.e. formaldehyde or paraformaldehyde). Such flame retardant material precursors will complex with the diamine monomers via a copolymerization reaction to form the flame retardant materials. | 02-25-2016 |
| 528250000 | Heterocyclic compound contains a 1,2-epoxy ring | 1 |
| 20090264615 | Process for the Preparation of Oxymethylene Polymers and Apparatus Suitable for This Purpose - A process and an apparatus for the preparation of oxymethylene polymers is described. The process encompasses the polymerization of a monomer that forms oxymethylene groups, if appropriate in the presence of a cyclic acetal, together with an acetal of formaldehyde and with an initiator for cationic polymerization, preferably in a gas-tight kneader or extruder. The temperature profile of the polymerization here is designed in such a way that the polymerization mixture, which is initially heterogeneous by virtue of precipitating polymer, is converted to a homogeneous phase at the end of the polymerization. The homogeneous phase in which the polymer is present in liquid form is stabilized via addition of deactivators. | 10-22-2009 |
| 528251000 | Nonaldehyde or nonaldehyde derivative heterocyclic compound contains a sulfur atom as a ring member of the heterocyclic compound | 1 |
| 20120302720 | Novel Polyazomethine - Provided is a novel polyazomethine which is soluble in relatively versatile organic solvents including hydrophobic solvents such as toluene, alcohol solvents such as methanol and ethanol, glycol solvents such as propylene glycol monomethyl ether, and ester solvents such as methyl lactate, while securing carrier mobility sufficient for a semiconductor material. The polyazomethine is a repeating unit that contains a divalent aromatic ring-containing conjugated group wherein an azomethine group and a divalent aromatic group which may have a substituent are alternately bonded and conjugated and a divalent hydrocarbon group which may have a group that is not conjugated with the azomethine group and has an oxygen atom, a sulfur atom or a cycloalkylene group, with the aromatic ring-containing conjugated group and the hydrocarbon group being bonded with each other via the azomethine group. | 11-29-2012 |
| 528253000 | Nonaldehyde or nonaldehyde derivative heterocyclic compound contains two or more heterocyclic rings and includes shared hetero atoms in a fused or bridged ring system | 1 |
| 20100273975 | POLYOLS BASED ON MODIFIED AMINO RESINS, THEIR PREPARATION AND - Disclosed herein is a polyol (A) based on modified amino resins, prepared by reacting: an amino resin (B) comprising three acetalized or etherified N-methylol groups of the general formula (I)>N—CHR—OR | 10-28-2010 |
| 528254000 | Nonaldehyde or nonaldehyde derivative heterocyclic reactant contains a six membered ring having three nitrogen and three carbon atoms as ring members | 4 |
| 20090054616 | Novel Melamine-Formaldehyde Condensates with Thermoplastic Properties - The invention relates to melamine-formaldehyde condensates with thermoplastic properties that can be produced from formaldehyde and melamine derivatives, wherein at least one of the melamine derivatives organic radicals R have been used to substitute at least four of the total of six hydrogen atoms of the three melamine amino groups, and wherein the organic radicals R are mutually identical or different. The invention also relates to a process for production of the melamine-formaldehyde condensates, use thereof, and an analytical method for determining the constitution of the melamine-formaldehyde condensates. | 02-26-2009 |
| 20140088286 | METHODS FOR POLYMERING HAPTENS INTO IMMUNOGENS - The present invention discloses methods for polymerizing non-immunogenic haptens into immunogens, which then can be used to stimulate anti-hapten antibody production in animals. Specifically, haptens with amine and/or carboxylic groups are polymerized into macromolecules by using cross-linking reagents, and the derived haptenic polymers are used to immunize animals for the production of anti-hapten antibodies. | 03-27-2014 |
| 528256000 | With reactant containing >NC(=O)- or >N-C(=S)- group, e.g., urea, etc. | 2 |
| 20090163694 | PROCESS FOR THE CONTINUOUS PRODUCTION OF HIGH EFFICIENT AQUEOUS AMINO FORMALDEHYDE RESIN SOLUTIONS - The invention relates to a process for the continuous production of an aqueous amino formaldehyde resin solution, preferably melamine formaldehyde resin (MF) or urea formaldehyde resin (UF), comprising the steps of a) preparing a reaction mixture of an amino compound and an aqueous formaldehyde, b) adding a catalyst to the reaction mixture, and c) condensation reacting the reaction mixture in the presence of the catalyst, wherein in step a) the amino compound and the formaldehyde are added as a concentrated aqueous solution or as a solid to a total solid content in the reaction mixture of 40-85 wt % (dry weight relative to the total weight of the reaction mixture), wherein in step c) the condensation reaction takes place in a continuous plug flow of the reaction mixture and wherein in step b) the catalyst is continuously added and finely dispersed into the reaction mixture through one or more addition points. The invention further relates to a continuous plug flow condensation polymerisation reactor and to the use of such reactor for preparing resin solutions. The invention also relates to the use of a specific continuous mixing device for continuous mixing of catalyst into a reaction mixture. | 06-25-2009 |
| 20090326185 | STORAGE STABLE MELAMINE-UREA-FORMALDEHYDE RESINS AND APPLICATIONS THEREOF - Melamine-urea-formaldehyde resins may be prepared using processes including a first cook stage, a second cook stage, and a final addition wherein: the molar ratio of formaldehyde to urea and melamine (F:U+M) in the first cook stage is from about 2.0 to about 5.0; and the molar ratio of formaldehyde to urea and melamine (F:U+M) in the second cook stage is from about 1.5 to 3.0; and the molar ratio of formaldehyde to urea and melamine (F:U+M) in the final addition from about 0.4 to 0.70. | 12-31-2009 |
| 528259000 | With >N-C(=X)-N< -containing reactant wherein X is a chalcogen atom | 1 |
| 20090171062 | Aminoplast Resin of High Performance for Lignocellulosic Materials - A process for preparing an aqueous aminoplastic urea-formaldehyde resin suitable for use in bonding lignocellulosic materials, which provides products of very low formaldehyde emission while maintaining superior performance. | 07-02-2009 |
| 528265000 | Sulfur-containing reactant | 2 |
| 20090054617 | Fibers comprising copolymers containing structure derived from a plurality of amine monomers including 3,3' diamino diphenyl sulfone and method for making same - The invention concerns a fiber derived from a plurality of amine monomers, including 3,3′diaminodiphenyl sulfone amine monomer, and at least one acid monomer; and yarns, fabrics and garments comprising this fiber, and methods of making the same. This fiber has use in heat-resistant protective apparel fabrics and garments. | 02-26-2009 |
| 20090062503 | Process for Producing Polyoxymethylene Copolymer - The problem to be solved is to provide a process for producing a polyoxymethylene copolymer in a molding machine with a reduced generation of formaldehyde gas. In a process for continuously producing a polyoxymethylene copolymer comprising a step of melt-kneading a crude polyoxymethylene copolymer at a temperature not lower than the melting point thereof, devolatilizing under reduced pressure the formaldehyde gas generated as a decomposition product, subsequently mixing a formaldehyde scavenger containing a hydrazide compound (A) while keeping the copolymer in a molten state and immediately pelletizing the mixture, a dispersed solution obtained by slurry-dispersing said (A) in a diluent (B) having a melting point lower than temperature (Ta) which is the lower of the melting point and the decomposition temperature of (A), within a temperature range not lower than the melting point of (B) and lower than (Ta) is used as the formaldehyde scavenger. | 03-05-2009 |
| 528266000 | With nonaldehyde or nonaldehyde derivative nitrogen-containing compound | 4 |
| 20110263810 | PROCESS FOR PREPARING POLYMERIC, IONIC IMIDAZOLIUM COMPOUNDS - Process for preparing polymeric, ionic compounds comprising imidazolium groups, wherein
| 10-27-2011 |
| 528268000 | Nitrogen-containing nonaldehyde or nonaldehyde derivative contains three or more nitrogen atoms bonded to the same carbon atom, e.g., dicyanodiamide, etc. | 1 |
| 20140357831 | METHOD OF MAKING POLYBENZIMIDAZOLE - A method of making a polybenzimidazole (PBI) includes the steps of: reacting, in a solution, an organic compound having at least 2 amino groups with an organic aldehyde adduct, the reactants comprise at least 8% by weight of the solution. A solvent of the solution may be selected from the group of: N,N-dimethylacetamide (DMAc), N,N-dimethylformamide (DMF), dimethylsulfoxide (DMSO), N-methyl-2-pyrrolidone (NMP), tetramethylene sulfone, and combinations thereof. The organic aldehyde adduct may be an organic aldehyde bisulfite adduct. The organic aldehyde portion of the organic aldehyde adduct being aliphatic, alicyclic, aromatic, heterocyclic, or heteroaromatic aldehyde or mixtures thereof. The polybenzimidazole may have an intrinsic viscosity of at least 0.40 dl/g. | 12-04-2014 |
| 528269000 | Nitrogen-containing nonaldehyde or nonaldehyde derivative contains a single organic amine group | 2 |
| 20080312405 | Process for Preparing Diaminodiphenylmethanes - Process for preparing diamino diphenyl methane and poly-(diamino diphenyl methane) comprising reacting aniline with formaldehyde in the presence of hydrogen chloride added in the gaseous form wherein the aniline contains 0.1 to 7 wt %, preferably 2 to 5 wt % of a protic chemical, preferably water. | 12-18-2008 |
| 20130178596 | HIGH-SPEED MIXING REACTOR AND APPLICATION THEREOF - Disclosed is a rapid mixing reactor, comprising a first feed-in passage housing, a reactor housing, a second feed-in passage, a hollow blade-wheel feed distributor, a rotation shaft, and a first feed distributor, wherein the first feed-in passage housing and the reactor housing are constructed coaxially and communicated with each other; the second feed-in passage, the hollow blade-wheel feed distributor and the rotation shaft each are fixed in connection with each other in the sequence along the central axis of the reactor; the hollow blade-wheel feed distributor is located within the reactor housing and rotates axially under the driving force of the rotation shaft; the second feed-in passage is connected with the hollow blade-wheel feed distributor; the first feed-in passage housing is set up with at least one first feed-in inlet therein; the reactor housing is set up with at least one reaction liquid outlet at its distal end; and the first feed distributor and the hollow blade-wheel feed distributor are provided with first feed-in jetting hole(s) and second feed-in jetting hole(s), respectively. The reactor is capable of effecting instantaneously rapid mixing of two streams of fluid under a massive capacity, and improving the yield and quality of the target product. | 07-11-2013 |
| 528270000 | From aldehyde or aldehyde derivative as sole reactant (includes copolymer of only aldehydes or aldehyde derivatives) | 1 |
| 20130041126 | PROCESS FOR WORKING UP PARTICULATE CRUDE POLYOXYMETHYLENE - The invention relates to a process for working up particulate crude polyoxymethylene, which comprises the following steps:
| 02-14-2013 |
