Abstract: Polyether diols characterized by a hydroxyl number of 56 or lower, high average functionality and high primary hydroxyl content are prepared by alkoxylating an unsaturated alcohol in multiple steps to form a polyether monol that contains 39% or more primary hydroxyl groups, and then reacting the polyether monol with a mercaptoalcohol that has a primary hydroxyl group.

Abstract: An epoxy resin composition in a liquid or solid state having excellent solubility and having high preservation stability. A modified epoxy resin composition including: Compound A containing tris-(2,3-epoxypropyl)-isocyanurate having 1 to 3 glycidyl group(s) in a molecule substituted with a functional group(s) of Formula (1): in which R1 and R2 are each independently an alkyl group, an alkenyl group, an alkynyl group, an aryl group, an aralkyl group, a heterocyclic group; or a halogenated derivative, an aminated derivative, or a nitrated derivative of these groups; and Compound B containing tris-(2,3-epoxypropyl)-isocyanurate, wherein tris-(2,3-epoxypropyl)-isocyanurate of Compound A before the substitution and tris-(2,3-epoxypropyl)-isocyanurate of Compound B comprise 2% by mass to 15% by mass of ?-type tris-(2,3-epoxypropyl)-isocyanurate and a remaining percentage of ?-type tris-(2,3-epoxypropyl)-isocyanurate based on a total mass of Compound A before the substitution and Compound B.

Abstract: A silicone-modified polybenzoxazole resin comprising repeating units of formulae (1a) and (1b) is prepared by addition polymerization. R1 to R4 are a C1-C8 monovalent hydrocarbon group, m and n are integers of 0-300, R5 is C1-C8 alkylene or phenylene, a and b are positive numbers of less than 1, a+b=1, and X1 is a divalent linker of formula (2). The resin is flexible, soluble in organic solvents, and easy to use.

Abstract: Provided is a wavelength conversion member including: a wavelength conversion layer including at least one kind of quantum dots that are excited by excitation light to emit fluorescence and are dispersed in an organic matrix; and a barrier layer that is provided adjacent to at least one main surface of the wavelength conversion layer and includes silicon nitride and/or silicon oxynitride as a major component, in which the organic matrix is obtained by curing a curable composition including at least an alicyclic epoxy compound and includes a chemical structure A which is bonded to silicon nitride and/or silicon oxynitride as a major component of the barrier layer.

Abstract: Alkylene oxide polymerizations are performed in the presence of a double metal cyanide polymerization catalyst and certain magnesium, Group 3-Group 15 metal or lanthanide series metal compounds. The presence of the magnesium, Group 3-Group 15 metal or lanthanide series metal compound provides several benefits including more rapid catalyst activation, faster polymerization rates and the reduction in the amount of ultra high molecular weight polymers that are formed. The catalyst mixture is unexpectedly useful in making polyethers having low equivalent weights.

Abstract: Potentially degradable isohexide based compounds and their polymers, derived from renewable resources, are described. Degradable isohexide-based monomers and polymers obtained from renewable resources are also described. Finally, processes for synthesizing such degradable polymers via copolymerization of the isohexide-based monomers and long chain diols are disclosed.

Abstract: A method for producing a radiation detector comprising pluralities of first and second cells constituted by scintillators having different compositions for different detection sensitivity distributions of radiation energy, pluralities of light-receiving elements, and reflective layers, comprising a step of forming first and second cell arrays having at least m×n first and second cells via reflective layers from first and second scintillator plates, wherein m and n are natural numbers of 2 or more, which may be the same or different; a step of cutting the first and second cell arrays to obtain first and second single arrays each having at least m×1 first and second cells via reflective layers; a step of aligning the first and second single arrays with a light-receiving element array having at least m×2 light-receiving elements; and a step of adhering the first and second single arrays to the light-receiving element array.

Abstract: Cured epoxy resins are widespread because of their excellent mechanical and chemical properties. Typically, epoxy resins based on bisphenol A diglycidyl ethers or bisphenol F diglycidyl ethers are used, but these are problematic for many sectors because of their effect on the endocrine system. The present invention relates to glycidyl ethers of limonene-based diols and/or polyols, and to curable epoxy resin compositions based thereon as alternatives to the bisphenol A diglycidyl ethers or bisphenol F diglycidyl ethers, or the epoxy resin compositions based thereon.

Abstract: A method for manufacturing a structure containing a conductor circuit according to the present invention can provide openings in various shapes by patterning a first photosensitive resin layer in a first patterning process according to shapes of openings formed in a heat-curable resin layer. Further, in the method for manufacturing a structure containing a conductor circuit, a plurality of openings can be formed at the same time and a residue of the resin around the opening can be reduced, unlike a case in which openings are formed with a laser. Therefore, it is possible to sufficiently efficiently manufacture the structure having excellent reliability even when the number of pins of a semiconductor element increases and it is necessary to provide a great number of fine openings.

Abstract: The present invention relates to a process for producing cyclic acetal comprising i) preparing a liquid reaction mixture comprising a) formaldehyde source, b) an aprotic compound and c) a catalyst; and ii) converting the formaldehyde source into cyclic acetals.

Abstract: Alkylene oxide polymerizations are performed in the presence of a double metal cyanide polymerization catalyst and certain magnesium, Group 3-Group 15 metal or lanthanide series metal compounds. The presence of the magnesium, Group 3-Group 15 metal or lanthanide series metal compound provides several benefits including more rapid catalyst activation, faster polymerization rates and the reduction in the amount of ultra high molecular weight polymers that are formed. The catalyst mixture is unexpectedly useful in making polyethers having low equivalent weights.

Abstract: A curable composition including (a) at least one divinylarene dioxide; (b) at least one polyol; and (c) at least one latent cure catalyst.

Abstract: A curable composition including (a) at least one divinylarene dioxide; (b) at least one phenol, wherein the phenol is unsubstituted at a 2-, 4-, or 6-phenolic ring position; and (c) at least one acid compound-related cure catalyst; and a cured product made from the above curable composition.

Abstract: This invention relates to a novel curing method of oligomers, using metal triflates, and particularly to the curing of hydroxyl terminated elastomers to achieve crosslinked polymers. The method finds particular use as an alternative cure methodology to replace isocyanate curing. There is further provided a cured and crosslinked polymer binder, which is particularly suitable and compatible for use with energetic materials.

Abstract: A polyalkylene glycol comprising: a random copolymer comprising units derived from EO and units derived from PO initiated with polytetrahydrofuran; wherein the polyalkylene glycol has a pour point of less than or equal to ?30° C. as measured using ASTM D97 and a traction value of less than 0.0165 at a contact pressure of 1.25 GPa, speed=2 m/s, SRR of 100% and temperature of 80° C. is provided. Also provided are lubricant compositions containing such polyalkylene glycol.

Abstract: An epoxy-functional resin composition including the reaction product of (a) a stoichiometric excess of at least one divinylarene dioxide, and (b) at least one of: a primary (1°) monoamine, a bis-secondary (2°) amine lacking nitrogen atoms, or mixtures thereof; a curable composition including (i) the epoxy-functional resin composition, and (ii) at least one curing agent; and a cured thermoset resin prepared from the curable composition.

Abstract: A new class of poly(beta-amino alcohols) (PBAAs) has been prepared using combinatorial polymerization. The inventive PBAAs may be used in biotechnology and biomedical applications as coatings (such as coatings of films or multilayer films for medical devices or implants), additives, materials, excipients, non-biofouling agents, micropatterning agents, and cellular encapsulation agents. When used as surface coatings, these PBAAs elicited different levels of inflammation, both in vitro and in vivo, depending on their chemical structures. The large chemical diversity of this class of materials allowed us to identify polymer coatings that inhibit macrophage activation in vitro. Furthermore, these coatings reduce the recruitment of inflammatory cells, and reduce fibrosis, following the subcutaneous implantation of carboxylated polystyrene microparticles. These polymers may be used to form polyelectrolyte complex capsules for cell encapsulation.

Abstract: The present invention relates to a photocurable resin composition including the following ingredients (A), (B) and (C): (A) a linear chain epoxy resin represented by the following general formula (1), in which m indicates an integer of from 2 to 10, and R1 and R2 each represent a hydrogen atom or a fluorine atom; (B) an alicyclic epoxy resin having at least two epoxy groups in one molecule thereof; and (C) a phosphorus fluoride-based photopolymerization initiator.

Abstract: The disclosure provides a polyester composition and a polyester article. According to an embodiment, the polyester composition includes a polyester and a branched monomer. The branched monomer has a structure represented by formula (I) or formula (II): wherein R is independently hydrogen, fluorine, chlorine, bromine, or C1-6 alkyl.

Abstract: The present invention relates to a process for the preparation of polyether carbonate polyols from one or more alkylene oxides, carbon dioxide and optionally from one or more H-functional starter substances in the presence of at least one double metal cyanide catalyst, wherein the double metal cyanide catalyst comprises an unsaturated alcohol as a complexing ligand.

Abstract: Alkylene oxide polymerizations are performed in the presence of a double metal cyanide polymerization catalyst and certain magnesium, Group 3-Group 15 metal or lanthanide series metal compounds. The presence of the magnesium, Group 3-Group 15 metal or lanthanide series metal compound provides several benefits including more rapid catalyst activation, faster polymerization rates and the reduction in the amount of ultra high molecular weight polymers that are formed. The catalyst mixture is unexpectedly useful in making polyethers having low equivalent weights.

Abstract: Providing a process for advantageously producing spherical particles of furfuryl alcohol resin using only furfuryl alcohol without using a harmful aldehyde as a starting material. In the process, furfuryl alcohol is subjected to a self-condensation reaction in the presence of an acid catalyst, whereby a fluidic condensation resin of furfuryl alcohol is obtained. The condensation resin of furfuryl alcohol is granulated and cured using water as a reaction medium in the presence of a dispersion stabilizer and an acid catalyst having a pKa of not more than 1.5, whereby spherical cured resin particles are formed.

Abstract: A new synthetic method to prepare high molecular weight poly(ethylene oxide) with a very narrow molecular weight distribution (PDI<1.5) is described. The method involves a metal free initiator system, thus avoiding dangerous, flammable organometallic compounds.

Abstract: The present invention is directed to a method for producing an oxymethylene copolymer by subjecting trioxane and 1,3-dioxolane to copolymerization using boron trifluoride or a coordination compound thereof as a catalyst, wherein the copolymerization is conducted in the presence of a steric-hindrance phenol in an amount of 0.006 to 2.0% by weight, based on the weight of the trioxane, using 0.01 to 0.07 mmol of boron trifluoride or a coordination compound thereof as a catalyst, relative to 1 mol of the trioxane, and wherein, at a point in time when the polymerization yield becomes 92% or more, the formed oxymethylene copolymer and a polymerization terminator are contacted to terminate the polymerization.

Abstract: A new and efficient method of functionalizing high molecular weight polymers through alkylation using a metal amide base is described. This novel procedure can also be used to synthesize polymer-based macro-initiators containing radical initiating groups at the chain-ends for synthesis of block copolymers.

Abstract: A process for preparing an aliphatic or cycloaliphatic epoxy resin including the steps of: (I) reacting a mixture of (a) an aliphatic or cycloaliphatic hydroxyl containing material, (b) an epihalohydrin, (c) a basic acting substance, (d) a non-Lewis acid catalyst, and (e) optionally, a solvent, forming an epoxy resin composition; (II) subjecting the epoxy resin composition produced in step (I) to a separation process to remove (A) “light” components such as, for example, solvent used in the epoxidation reaction, if any, unreacted epihalohydrin, and co-products such as di(epoxypropyl)ether; (B) unreacted aliphatic or cycloaliphatic hydroxyl containing material, if any; (C) partially epoxidized aliphatic or cycloaliphatic hydroxyl containing material, such as, for example, MGE; (D) fully epoxidized aliphatic or cycloaliphatic hydroxyl containing material, such as, for example, DGE, such that the (E) aliphatic or cycloaliphatic polyfunctional epoxy resin product remaining contains no more than 50% by weight of s

Abstract: The present invention relates to a process for preparing high-functionality polyetherols by reacting at least one trifunctional or higher-functionality alcohol and if appropriate further di- and/or monofunctional alcohols and/or modifying reagents, with the aid of acidic catalysts, where the trifunctional or higher-functionality alcohol is not glycerol. The present invention further relates to high-functionality polyetherols obtainable by such a process and to the use of these high-functionality polyetherols as adhesion promoters, thixotropic agents, rheology modifiers of polymers, phase transfer reagents, micro- or nanocontainers for biologically active compounds, for example for active medical ingredients, biocides, herbicides or fungicides, as pigment dispersants, an additive in printing inks or as structural units for preparing polyaddition or polycondensation polymers or for treatment of seed.

Abstract: Embodiments of the present disclosure are directed to an epoxy shape memory copolymer by copolymerizing a mixture comprising multifunctional epoxide reagent, triglycidyl ether diluent, catalyst, and at least one aromatic alcohol curing agent of Formula I: wherein R1 and R5 are H, alkyl, aryl, or alkoxy, but not —CH3OH and R2, R3 or R4 are H, OH, alkyl, aryl, alkoxy or —CH3OH with the proviso that at least one of R2, R3 or R4 is —Y—OH, wherein Y is an alkyl.

Abstract: A process for preparing a macromonomer by cationic ring-opening polymerization of at least one hydroxyoxetane with a terminally ethylenically unsaturated starter molecule free of allyl groups in a molar ratio (hydroxyoxetane(s):starter molecule) of (100:1) to (1:1) in the presence of at least one suitable catalyst; macromononomers obtainable therefrom and use thereof.

Abstract: PROBLEM There is provided a method for producing polylactic acid, which is capable of obtaining polylactic acid at low cost, and having high molecular weight. SOLUTION A method for producing polylactic acid by polymerizing molten lactide using at least one reactor having plug flow characteristics with ?(?), calculated from the following FORMULA (1), of 0.3 or smaller: ?(?)=?0?(E(?)×ABS(1??))d???(1) in the Formula (1), E(?) is a residence time distribution function determined by impulse response by starch syrup having a viscosity of 3 Pa·s, and ? is ratio of elapsed time ? and mean residence time ?0.

Abstract: A process for recovering volatile components from an oxymethylene polymer process is disclosed. The volatile components are removed from the process and the formaldehyde collected is converted to a cyclic acetal. The formaldehyde is converted to a cyclic acetal by contacting the formaldehyde with a catalyst in the presence of an aprotic solvent.

Abstract: The present invention provides an aliphatic polycarbonate production method which, using carbon dioxide and an epoxide, easily produces aliphatic polycarbonates having a low metal catalyst content. The invention relates to an aliphatic polycarbonate production method which includes a step of polymerization by reacting carbon dioxide with an epoxide in the presence of a metal catalyst; and a step of treating a polymer obtainable in the polymerization step with a surfactant. High-purity aliphatic polycarbonate having a low metal catalyst content can be easily provided by the aliphatic polycarbonate production method of the invention.

Abstract: The present invention relates to a curable composition, comprising at least one benzoxazine compound, and at least one sulfonic acid ester having a cyclic structure. In particular, the invention relates to the use of at least one sulfonic acid having a cyclic structure as a heat-activatable catalyst for curable composition, comprising at least one benzoxazine compound.

Abstract: A non-leaching mediator may include a polymer having a polymeric backbone, and a plurality of phenothiazine groups bonded to the polymeric backbone. The plurality of phenothiazine groups may include at least one of a phenothiazine group having the general formula (IV): and salts thereof, where n is about 9 and “R” represents the polymeric backbone to which the phenothiazine group is bonded, and a phenothiazine group having the general formula (V): and salts thereof, where n is about 9 and “R” represents the polymeric backbone to which the phenothiazine group is bonded.

Abstract: The present invention provides a blend comprising one or more epoxy resins and a mixture which comprises 0.3 to 0.9 amine equivalent, per equivalent of epoxide of the epoxy resin used, of a hardener component a) and as hardener component b) a compound of the formula I, a process for preparing this blend, the use of the blend of the invention for producing cured epoxy resin, and an epoxy resin cured with the blend of the invention.

Abstract: An aluminum chelate latent curing agent is configured such that an aluminum chelating agent and a specific arylsilane compound or a hydrolysate thereof are held in a polymer obtained by subjecting the aluminum chelating agent, the arylsilane compound, and a polyfunctional isocyanate compound to an emulsifying treatment, and then subjecting the polyfunctional isocyanate to interfacial polymerization. The aluminum chelating agent does not have an alkoxy group bonded to the aluminum. The arylsilane compound is a compound represented by the formula (A). (Ar)mSi(OR)n ??(A) In the formula (A), m is 2 or 3, and the sum of m and n is 4. Ar represents an optionally-substituted aryl group. R represents a hydrogen atom, a methyl group, or an ethyl group. When n is two, the two Rs may be the same or different.

Abstract: A process for preparing a hybrid polyester-polyether polyol comprises contacting a carboxyl group-containing component and an epoxide, optionally in the presence of one or more of a double metal cyanide catalyst, a superacid catalyst, a metal salt of a superacid catalyst and/or a tertiary amine catalyst, under conditions such that a hybrid polyester-polyether polyol is formed. The hybrid polyester-polyether polyol offers the advantages of both ester and ether functionalities when used in a polyurethane formulation, thus enhancing physical properties. The process results in products having narrow polydispersity, a low acid number and unsaturation, and reduced byproduct formation, particularly when the double metal cyanide catalyst is employed.

Abstract: This invention relates to a polyether-amido-amine corn-pound, obtainable by a two-step reaction of a poly-etheramine with an alkyl acrylate and a polyalkyle-neimine, whereas the polyetheramine and the polyalkyleneimine have at least one primary or secondary amine group, in which the first step comprises the reaction of the polyetheramine with the alkyl acrylate and the second step comprises the reaction of the polyalkyleneimine with the product of the first step. The invention also relates to a method for synthesising a polyether-amido-amine compound by a two-step-reaction. Another object of this invention is a curable composition containing at least one polyether-amido-amine-compound of this invention and a method for coating the surface of a substrate or for binding at least two substrates together using such a curable composition.

Abstract: A method for ionic polymerization of ethylene oxide. In the first step of the method, a gaseous monomer composition comprising ethylene oxide at a first flow rate is mixed with a gaseous ionic polymerization initiator at a second flow rate, thereby forming a mixture. The formed mixture is then heated with at least one heated filament to thereby form at least one polymer. The method may also be employed to coat a variety of different substrates in situ during the polymerization reaction.

Abstract: The present invention provides a highly efficient process for manufacturing copolyether glycol having a mean molecular weight of from about 650 to about 5000 dalton by polymerization of tetrahydrofuran and at least one alkylene oxide in the presence of an acid catalyst and at least one compound containing reactive hydrogen atoms. More particularly, the invention relates to a process for manufacturing copolyether glycol which comprises recycle to the polymerization reaction step of at least a portion of the oligomeric cyclic ether which is co-produced with the copolyether glycol, said process exhibiting an Space Time Yield value of greater than about 0.9.

Abstract: A micro electromechanical system having incorporated therein a composition of matter consisting of a stable solution containing a polymer derived from a solution of a polymer containing trace metals, the derived method comprising the steps of: (a) providing a polymer solution containing a polymer, a first solvent and trace metals; (b) passing said polymer solution through an acidic cation ion exchange material to remove said trace metals therefrom and thereby forming a polymer solution containing free acid radicals; (c) precipitating said polymer from said polymer solution of step b by contacting with a second solvent wherein the polymer is substantially insoluble therein; (d) filtering said solution and said second solvent to thereby form a solid polymer cake; (e) contacting said cake from step d with sufficient quantities of additional said second solvent in order to remove free acid radicals therefrom; (f) removing any residual first and second solvents from said polymer to form said stable polymer.

Abstract: A stable solution of the polymer prepared from N,O-heterocyclic compound and its preparing method are provided, wherein the stable solution is prepared by making the N,O-heterocyclic compound of formulae I or II carry out a ring-opening polymerization: wherein R1 to R3, W1, W2, m, n, p and q are as defined in the specification. The stable solution can be used as a hardener for curing epoxy resin.

Abstract: Rigid-rod copolymer compositions incorporating PBO (poly(p-phenylenebenzobisoxazole)), DiOH-PBO (poly(2,5-dihydroxy-1,4-phenylenebenzobisoxazole), DiOH-PBI (poly(2,5-dihydroxy-1,4-phenylenebenzobisimidazole)), DiOH-PyBI (poly(2,5-dihydroxy-1,4-phenylenepyridobisimidazole), PBZT (poly(p-phenylenebenzobisthiazole)) and its corresponding dihydroxy analogues attached to a flexibilizing hexafluoroisopropylidene linkage are described. Also described are their fabrication into fibers by a dry jet wet spinning technique and the measured fiber mechanical properties. The copolymer compositions are highly flame-resistant and have potential utility for fire-protective clothing.

Abstract: Disclosed herein is a method for utilizing the exothermic energy generated by a low temperature cure reaction to access a high-temperature cure reaction, which is otherwise energetically inaccessible at a chosen tool temperature, thereby producing a cured resin matrix with properties closely matching to those produced via high-temperature cure reactions but achieved via a short cure time and low cure temperature. Also disclosed is a short-cure resin composition containing: (a) at least one multifunctional epoxy resin having an epoxy functionality of greater than 1; (b) a hardener composition containing (i) at least one aliphatic or cycloaliphatic amine curing agent having one or more amino groups per molecule; (ii) at least one aromatic amine curing agent having one or more amino groups per molecule; and optionally, (iii) an imidazole as curing accelerator. The improved properties of this resin composition include being curable at a temperature of ?120° C.

Abstract: There is provided an epoxy compound that provides properties of cured products combining high transparency with high flexural strength by being thermally cured while maintaining advantageous handling properties in a liquid state thereof; and a method for producing a composition by using the epoxy compound. A method for producing an epoxy compound of Formula (1): (in Formula (1), n1, n2, and n3 are individually any one of integers of 2 to 6; n4, n5, and n6 are individually an integer of 2; n7, n8, and n9 are individually an integer of 1; and R1, R2, R3, R4, R5, and R6 are independently a hydrogen atom or a C1-10 alkyl group), including: reacting cyanuric chloride with a C4-8 alkenol and reacting the obtained compound having an unsaturated bond with a peroxide.

Abstract: An object of the present invention is to provide a curable epoxy resin composition containing an epoxy resin, wherein the composition is excellent in storage stability and curing characteristics and provides a cured product excellent in characteristics, particularly organic solvent resistance; an adhesive agent consisting of the composition; and an adhesive agent consisting of a curable epoxy resin composition excellent in adhesive strength.

Abstract: The present invention relates to an improved process for manufacturing polyether and copolyether glycols by polymerization of a reaction mixture comprising at least one tetrahydrofuran or at least one tetrahydrofuran and at least one other cyclic ether, for example, an alkylene oxide, in the presence of a particular perfluorosulfonic acid resin catalyst comprising a copolymer of tetrafluoroethylene (TFE) or chlorotrifluoroethylene (CTFE) and a monomer of the formula CF2?CF—O—CF2—CF2—SO2F.

Abstract: The invention relates to a method to produce polytetrahydrofuran (PTHF) copolymer from plant oil by copolymerizing epoxidized oil; preferably from natural sources like animal oils and more preferably from plants oils; with tetrahydrofuran (THF), in the presence of boron trifluoride-diethylether complex or tetrafluoroboric acid to yield the desired copolymer with specific properties. The properties of the produced PTHF copolymer depends on the (i) type of epoxidized oil used as co-monomer (ii) mole ratio between epoxidized oil and THF (iii) amount of catalyst (iv) reaction temperature (v) reaction time. The produced PTHF copolymers were then used as raw material for the production of polyurethane and polyurea.

Abstract: A coating composition includes, with respect to (1) 100 parts by weight of epoxy-group contained polyester modified vinyl polymer (D) obtained by copolymerization of a vinyl monomer (A) containing an alicyclic epoxy group and a vinyl monomer (B) containing polyester in a side chain, (2) 0.01 to 10 parts by weight of an organic metal compound, and (3) 0.01 to 10 parts by weight of a silicon compound having a silanol group.

Abstract: A process for the manufacture of a cured composite material, the process comprising the steps of blending together a liquid curable resin and a curing agent having a melting point greater than 100° C. to form a liquid blend of curable resin and curing agent, at least partially impregnating a structural fibre arrangement with the blended curable resin and curing agent to form a curable composite material, followed by curing the composite material by exposure to elevated temperature and at a pressure of no greater than 3 bar absolute to form a cured composite material.