Abstract: Methods of passivating surfaces, composite materials, and electronic devices including the composite materials. The composite materials can include a passivated film, such as a metal halide perovskite passivated with an organic dye. The electronic devices may include solar cells.

Abstract: An admixture for cement based compositions, the admixture including a) an aqueous solution of polycarboxylate ether and b) at least one functionalized nanomaterial selected from carbon nanotubes functionalized by carboxyl groups and carbon nanofibers functionalized by carboxyl groups, wherein the at least one functionalized nanomaterial is dispersed in the aqueous solution. Low dosages of the admixture in cement based compositions result in significant enhancement of compressive strength.

Abstract: The invention provides a curable resin composition containing (A) a multifunctional benzoxazine compound having at least two benzoxazine rings, the compound being at least one multifunctional benzoxazine compound selected from a multifunctional benzoxazine compound having a structural unit of formula (1) and a multifunctional benzoxazine compound represented by a structure of formula (2), (B) a multifunctional epoxy compound having at least one norbornane structure and at least two epoxy groups, (C) a curing agent, and (D) a curing accelerator which is a bisphenol salt of a diazabicycloalkene. The invention also provides a cured product of the curable resin composition and methods of producing the curable resin composition and the cured product, as well as a semiconductor device using the cured product as a sealant.

Abstract: The present invention relates to an epoxy resin composition containing an alicyclic epoxy compound (A), a polymer polyol having two or more terminal hydroxyl groups (B), and a Lewis acid-amine complex (C). The present invention provides an epoxy resin composition which can be cured by heating at low temperatures, and suppresses heat generation associated with curing (heat generation by curing). It is preferable that the epoxy resin composition further contains an antioxidant. Furthermore, it is preferable that the antioxidant is a phosphite ester compound.

Abstract: A system and a method for treating salt-containing glycerin wastewater are provided, wherein the system for treating the salt-containing glycerin wastewater includes a mixing tank, a filtering device, a distillation column, and a water supply device. The mixing tank is adapted to mix salt-containing glycerin wastewater with a concentrated hydrochloric acid to obtain a mixture. The filtering device communicates with the mixing tank and filters the mixture to obtain an acidic filtrate and a precipitated salt. The distillation column communicates with the filtering device and receives the acidic filtrate from the filtering device. The water supply device supplies water to the acidic filtrate. The system and method for treating the salt-containing glycerin wastewater can effectively recycle hydrochloric acid.

Abstract: The present disclosure relates to a recycling method for producing dimethyl carbonate and dimethyl carbonate derivatives. The process is unique in that it produces a by-product that can be re-used in the process as a raw material for repeating the process. For example, when the process is directed to synthesizing dimethyl carbonate, glycerol is used as a starting material. Glycerol is also a by-product produced during formation of dimethyl carbonate, and therefore it can be re-used as starting material to generate more dimethyl carbonate.

Abstract: A frame sealant and a process for preparing the same, and a liquid crystal display panel and a liquid display containing the frame sealant. The frame sealant comprises a curing resin, an anion exchange resin, a photoinitiator, a heat curing agent, a coupling agent, an organic filler, and an inorganic filler.

Abstract: A method of predicting viscosity behavior of a thermosetting resin is provided that is capable of predicting viscosity behavior of a thermosetting resin and void generation in the underfill is suppressed while good solder connection is obtained.

Abstract: The present invention relates to a method for producing polyether carbonate polyols from one or more H-functional starter substances, one or more alkylene oxides and carbon dioxide, in the presence of at least one double metal cyanide (DMC) catalyst, wherein the double metal cyanide catalyst comprises a complex-forming component selected from the group consisting of polycarbonate diol, polyether carbonate polyol, polyethylene glycol diol and poly(tetramethylene ether diol).

Abstract: Disclosed are nanoparticles, such as carbon nanotubes or other graphitic sheet materials having extended aromatic surfaces, which are used to deliver active agents such as drugs, labels or dyes (termed for convenience a “drug”) to the interior of cells. The nanoparticles are functionalized by a hydrophilic polymer or adsorption of an amphiphilic molecule to render them stable in suspension. The drug is therefore capable of release in the cell exterior. The drug is more rapidly released at lower pH, as found e.g., in tumor cells. The drug may also be linked to a branched chain hydrophilic polymer, so that each polymer molecule carries more than one drug bound by a cleavable linker.

Abstract: The present invention relates to a method for producing polyether carbonate polyols by way of the catalytic addition of carbon dioxide and alkylene oxides to H-functional starter compounds in the presence of double metal cyanide (DMC) catalyzer that was activated in the presence of cyclic anhydride.

Abstract: The present invention provides water-soluble, polymer derivatives having a thiol-selective terminus suitable for selective coupling to thiol groups, such as those contained in the cysteine residues of proteins, as well as methods for preparing the water-soluble, polymer derivatives having a thiol-selective terminus.

Abstract: Alkoxylation products, their preparation, compositions comprising these alkoxylation products, and the use thereof as or for producing adhesives and sealants.

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: This invention relates to a method of preparing poly(alkylene carbonate) that has a molecular weight and polymer chain structure precisely controlled by adding a chain transfer agent composed of a compound having an alcohol or carboxylic acid functional group upon alternating copolymerization of an epoxide compound and carbon dioxide using a catalyst composed of a trivalent metal complex compound synthesized from a quaternary ammonium salt-containing Salen type ligand, and to a polymer compound prepared thereby. According to this invention, the polymer compound having a star-shaped chain as well as the polymer having a linear chain can be prepared. The low-molecular-weight poly(alkylene carbonate) has an —OH terminal group and can be used alone as a coating agent, etc., and also in mixtures with an isocyanate compound and thus can be easily utilized to prepare polyurethane.

Abstract: Thermoset elastomer compositions are disclosed. Such elastomers are the reaction product of (a) an ambient temperature liquid epoxy-terminated prepolymer formed by reacting a polyoxyalkyleneamine having a molecular weight of from 3000 to 20,000 with an excess of epoxide, wherein the polyoxyalkyleneamine has at least 3 active hydrogen atoms and (b) a curing agent comprising at least one amine or polyamine having an equivalent weight of less than 200 and having 2 to 5 active hydrogen atoms. Such elastomers can be used in applications such as for sealants, adhesives, coatings, gaskets, jointing and cast elastomers.

Abstract: There is provided a method for production of a high-purity biodegradable polyoxyethylene derivative on an industrial scale using a polyoxyethylene compound containing polylactic acid at the terminal thereof. A biodegradable polyoxyethylene compound represented by formula (1) and a compound represented by formula (I) are caused to react with each other at 60° C. to 120° C. using toluene as a solvent in the presence of sodium acetate to obtain a biodegradable polyoxyethylene derivative represented by formula (2).

Abstract: Provided is e.g., an epoxy resin curing agent, epoxy resin composition and a gas-barrier adhesive containing the epoxy resin composition which can express high gas-barrier properties and excellent adhesiveness to various types of plastics, in particular, to polyester, and a gas-barrier laminate having high gas-barrier properties and excellent adhesiveness to various types of plastics, in particular, to polyester. The epoxy resin curing agent of the present invention is a reaction product of the following (A) and (B). Furthermore, the epoxy resin curing agent contains at least an epoxy resin and the epoxy resin curing agent of the present invention. (A) metaxylylenediamine or paraxylylenediamine; (B) an unsaturated carboxylic acid represented by the following formula (1) and/or derivatives thereof: wherein R1 represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, an aralkyl group having 1 to 8 carbon atoms or an aryl group.

Abstract: The present invention relates to a method for transducing a target cell, the method comprising the step of contacting a target cell with a retroviral vector and a poloxamer having a molecular weight of 12.8 kDa to about 15 kDa. Further, the invention relates to the use of a poloxamer as defined herein, optionally in combination with a polycationic substance as defined herein, for transducing a target cell with a retroviral vector and a kit comprising a retroviral vector, a poloxamer as defined herein and, optionally, instructions for use.

Abstract: Fluorinated supramolecular polymers containing at least 5% by weight of covalently bonded fluorine atoms, based on total weight of the polymers are disclosed. The polymers comprise a fluorinated polymer chain and a (self-)complementary unit capable of forming at least three hydrogen bonds being covalently bonded to the fluorinated polymer chain. Also disclosed are materials comprising (a) a fluorinated supramolecular polymer and (b) a non-fluorinated polymer and/or (c) a fluorinated compound, the non-fluorinated polymer being a polymer containing less than 5% by weight of covalently bonded fluorine atoms, based on the total weight of the non-fluorinated polymer, and the fluorinated compound being either a low molecular weight fluorinated compound comprising at least one fluorine atom and having a molecular weight of 34 to 600 amu, or a fluoropolymer containing at least 5% by weight of covalently bonded fluorine atoms and a Mn from about 600 to about 5000.

Abstract: Polyether block copolymers of the general structure B-(A-OH)n are described, where n is greater than or equal to 2 and blocks A are made up of polyoxypropylene units and the central block B of polyoxytetramethylene, polyoxyethylene, polybutadiene, polyisoprene, polyacrylate, polymethacrylate, polyamide, polyurethane, or polyester units. These polyether block copolymers are suitable for the manufacture of compositions that serve as the basis for preparations for use as a one-component moisture-hardening or two-component adhesive or sealant, for assembly bonding, for areal bonding, and/or for coating, as a reactive melt adhesive or as a laminating adhesive.

Abstract: A polyoxyethylene derivative represented by the formula (1): wherein a whole molecular weight of the polyoxyethylene derivative is 500 to 160,000; n is 5 to 3650; L1, L2, and L3 each independently represent an alkylene group, a phenylene group, an ester bond, an amide bond, an ether bond, a urethane bond, a carbonate bond, a secondary amino group, or a combination thereof; X represents a functional group capable of reacting with a bio-related substance; Y represents a hydrophilic group having plural hydroxyl groups made from a residual group of xylitol or volemitol or a residual group of polyglycerin of trimer to 31-mer; Z represents a residual group of a compound having 2 to 5 active hydrogen atoms; b and c are as follows: 1?b?4, 1?c?4, and 2?b+c?5; and d and e each independently are 0 or 1.

Abstract: New methods of synthesizing new types of plant derived high molecular weight polyols are provided.

Abstract: The present invention relates to a process for the activation of double metal cyanide (DMC) catalysts for the preparation of polyether carbonate polyols by catalytic copolymerisation of carbon dioxide (CO2) with alkylene oxides in the presence of one or more H-functional starter substances.

Abstract: Embodiments of the invention provide for a method of producing a silylated polyoxyalkylene polymer having at least one crosslinkable silyl group and at least one hydroxyl group in each molecule. The method comprises providing a polyoxyalkylene polymer having at least one unsaturated group and at least one alcoholic hydroxyl group in each molecule, wherein the polyoxyalkylene polymer includes an impurity double metal cyanide complex mixed therein, and wherein the polyoxyalkylene polymer has not been treated with a metal-coordinating compound; and adding to the polyoxyalkylene polymer a compound having a hydrogen-silicon bond and a crosslinkable silyl group in each molecule and a hydrosilylation catalyst to thereby carry out a hydrosilylation reaction, wherein the hydrosilyation reaction is performed in an absence of a metal-coordinating compound.

Abstract: To provide: a monomer having a polyalkylene glycol chain preferably used in various industrial applications such as detergent builder compositions for clothes and bodies, water-treatment agents, and pigment dispersants; and a polyalkylene glycol polymer using such a monomer as a raw material. A polyalkylene glycol monomer having a polymerizable double bond and a polyalkylene glycol chain, wherein the polyalkylene glycol monomer has a hydrophobic part in the polyalkylene glycol chain and/or at a terminal of the chain, and the polymerizable double bond is derived from allyl glycidyl ether, and a polyalkylene glycol monomer having a monomer unit derived from the above-mentioned polyalkylene glycol monomer, wherein the polyalkylene glycol polymer is a polyalkylene glycol polymer having a carboxylic acid group and/or a sulfonic acid group.

Abstract: There is provided a method for preparing a low-molecular weight poly(alkylene carbonate) of which the molecular weight and chain shape are precisely controlled, by introducing a phosphorous compound having a hydroxyl group as a chain transfer agent in order to regulate the molecular weight, in alternating copolymerizing an epoxide compound and carbon dioxide by using trivalent metal complex prepared from a Salen type ligand containing a quaternary ammonium salt, and a polymer prepared by the method. Since poly(alkylene carbonate) prepared according to the present invention includes a phosphate or phosphonate group in the polymer chain, it has flame-retarding property.

Abstract: An epoxy oxazolidone including the reaction product of (a) a divinylarene dioxide, and (b) an excess of a polyisocyanate to provide an epoxy oxazolidone composition; wherein the composition has an oxazolidone selectivity of greater than 40% relative to the total of the carbonyl compounds; a process for making the epoxy oxazolidone; and a curable epoxy resin composition including (i) the epoxy oxazolidone derived from a divinylarene dioxide such as divinylbenzene dioxide (DVBDO) and a polyisocyanate, (ii) at least one curing agent; and/or (iii) a catalyst. The cured product made from the above epoxy resin composition is thermally stable and offers improved properties such as a lower viscosity and a high heat resistance compared to known cured products prepared from known epoxy resins.

Abstract: Provided is a method for preparing poly(alkylene carbonate) containing ether linkages, by the copolymerization of an epoxy compound and carbon dioxide, with a trivalent metal complex prepared from a salen type ligand containing a quaternary ammonium salt, and a double metal cyanide (DMC) catalyst together. The amount of ether linkages can be controlled by regulating the weight ratio of two catalysts and the carbon dioxide pressure.

Abstract: Disclosed is a thermoplastic melt-mixed composition including: a) a polyamide resin; b) a poly(amino acid)-polyol compound provided by reacting: b1) one or more amino acids selected from the group consisting of primary amino acids and secondary amino acids and combinations of these; the amino acid having no more than one hydroxyl group; and b2) one or more polyepoxy compound comprising at least two or more epoxy groups; the poly(amino acid)-polyol compound having a range of at least 10 percent conversion of epoxy equivalents of component (b1) up to, but excluding, the gel point of the components b1) and b2) and c) reinforcing agent; and, optionally, d) polymeric toughener; and f) further additives. Processes for making the composition are also disclosed.

Abstract: A method of predicting viscosity behavior of a thermosetting resin is provided that is capable of predicting viscosity behavior of a thermosetting resin and void generation in the underfill is suppressed while good solder connection is obtained.

Abstract: An insulating material obtained by using an epoxy resin composition comprising, as an epoxy resin curing agent, a polycondensation-type aryloxysilane compound contained in an amount of 50 to 100 wt %, having a hydroxyl group equivalent in a range of 1,000 to 8,000 g/eq, and an epoxy resin having an epoxy equivalent of 200 to 500, wherein a thermally cured product obtained by curing this epoxy resin composition at a temperature of 180° C. or lower, shows a dielectric constant and a dielectric loss tangent of 3.00 or smaller and 0.015 or smaller, respectively, at 1 GHz under normal temperature. The insulating material using the epoxy resin composition can exhibit both excellent dielectric properties and practical characteristics, and is suitable for an interlayer insulating material of a multilayer printed circuit board.

Abstract: Liquid epoxy curing agents that have improved latency over conventional liquid curing agents while retaining the physical properties of the cured material are disclosed. These liquid curing agents can be used for curing epoxy resins, or in combination with dicyandiamide (DICY) based curing agents in order to accelerate DICY curing.

Abstract: The present invention provides a liquid resin system including a liquid monobenzoxazine monomer and a non-glycidyl epoxy compound, wherein the weight ratio of the monobenzoxazine monomer to the non-glycidyl epoxy compound is in a range of about 25:75 to about 60:40. The liquid resin system exhibits a low viscosity and exceptional stability over an extended period of time making its use in a variety of composite manufacturing methods highly advantageous.

Abstract: A novel hydroxyl-functional polyether derived from the reaction of (a) a divinylarene dioxide, particularly a divinylarene dioxide derived from divinylbenzene such as divinylbenzene dioxide (DVBDO); and (b) a diphenol; wherein the reaction product is thermally stable and exhibits an absence of self-polymerization (crosslinking or gelling) upon heating at elevated temperatures. The novel hydroxyl-functional polyether offers improved properties compared to known hydroxyl-functional polyethers such as solid epoxy resins, phenolic epoxy resins (hardeners), and poly(hydroxyl ethers).

Abstract: The present invention provides, among other things, segmented, degradable polymeric reagents suitable for reaction with biologically active agents to form conjugates, the polymeric reagents comprising one or more polymer chains divided or separated by one or more degradable linkages into polymer segments having a molecular weight suitable for renal clearance. The polymeric reagents can have a substantially linear structure, a branched structure, or a multiarm structure. Each structure includes one or more linkages capable of degradation in vivo.

Abstract: A method of preparing polyurethane prepolymer does not require using a toxic isocyanate monomer (manufactured by harmful phosgene) as a raw material. Epoxy resin and carbon dioxide are used as major raw materials to form cyclic carbonates to be reacted with a functional group oligomer, and then amino groups in a hydrophilic (ether group) or hydrophobic (siloxane group) diamine polymer are used for performing a ring-opening polymerization, and the microwave irradiation is used in the ring-opening polymerization to efficiently synthesize the amino-terminated PU prepolymer, and then an acrylic group at an end is added to manufacture an UV cross-linking PU (UV-PU) oligomer which can be coated onto a fabric surface, and the fabric is dried by UV radiation for a surface treatment to form a washing-resisted long lasting hydrophilic or hydrophobic PU fabric.

Abstract: Disclosed are epoxy resins exhibiting a highly favorable combination of tensile strength and elongation with respect to prior art epoxy systems. The elastomeric epoxy resin systems of the invention are prepared utilizing a curing agent containing at least one monoprimary amine, and are particularly useful in applications such as, for example, castings, potting, composites, crack sealing, coatings, adhesives, roofing materials, flooring or reinforced membranes.

Abstract: The present invention provides novel bimetallic complexes and methods of using the same in the isoselective polymerization of epoxides. The invention also provides methods of kinetic resolution of epoxides. The invention further provides polyethers with high enantiomeric excess that are useful in applications ranging from consumer goods to materials.

Abstract: Methods for fabricating a random graft PS-r-PEO copolymer and its use as a neutral wetting layer in the fabrication of sublithographic, nanoscale arrays of elements including openings and linear microchannels utilizing self-assembling block copolymers, and films and devices formed from these methods are provided. In some embodiments, the films can be used as a template or mask to etch openings in an underlying material layer.

Abstract: Two-component epoxy resin compositions are disclosed. The polyepoxide component comprises one or more oligomers having at least one aromatic ring substituent R4X1—in which R4 represents a substituted or unsubstituted aliphatic group having at least 4 carbon atoms, a substituted or unsubstituted cycloaliphatic group having at least 5 carbon atoms, a poly(oxyalkylene) group wherein the average number of carbon atoms per oxyalkylene unit is at least 3, or a aryl group having one or more of the foregoing substituents, bonded directly to the aryl group via a covalent bond or bonded to the aryl group via an oxy, a thio, or a carbonyloxy divalent linking group, or a combination thereof, and X1 represents a covalent bond or a divalent moiety selected from oxy, thio, carbonyloxy, and —X2C(R2)2C(R1)(OH)C(R2)2O—, in which X2 represents a covalent bond or a divalent moiety selected from oxy, thio, and carbonyloxy, R1 represents —H or —C1-14 alkyl, and each R independently represents —H or —CH3.

Abstract: A method of improving the mechanical properties of polymers is described. The method involves heat treating the polymer at a temperature below the glass transition temperature in a wet or in a dry environment. Polymer articles capable of moisture uptake in humid environments, as well as polymer articles less susceptible to moisture uptake, have improved mechanical properties, particularly improved stress relaxation behavior and set properties, when treated in accord with the heat treatment method.

Abstract: The present invention relates to a production method of polyalkylene oxide particles including a step of forming the polyalkylene oxide particles by polymerization of an alkylene oxide in a polymerization solution containing a polymerization solvent and a catalyst dispersed in the polymerization solvent. The average particle diameter of the catalyst is more than 25 ?m.

Abstract: A high degree of resistance to moisture and solder and high flame retardancy are realized without incorporating a halogen in view of environmental friendliness. A phenolic resin has structural moieties which are a naphthylmethyloxy group- or anthrylmethyloxy group-containing aromatic hydrocarbon group (ph1), a phenolic hydroxyl group-containing aromatic hydrocarbon group (ph2), and a divalent aralkyl group (X) represented by general formula (1) below: (where Ar represents a phenylene group or a biphenylene group and Rs each independently represent a hydrogen atom or a methyl group) and has a structure in which plural aromatic hydrocarbon groups selected from the group consisting of the naphthylmethyloxy group- or anthrylmethyloxy group-containing aromatic hydrocarbon group (ph1) and the phenolic hydroxyl group-containing aromatic hydrocarbon group (ph2) are bonded through the divalent aralkyl group (X). This phenolic resin is used as a curing agent for an epoxy resin.

Abstract: A hyperbranched polyether polyol obtained by a ring-opening reaction between a hydroxyalkyloxetane (a1) and a monofunctional epoxy compound (a2), wherein the polyether polyol includes a primary hydroxyl group (H1) and a secondary hydroxyl group (H2) in the molecular structure thereof, and has a number average molecular weight (Mn) of 1,000 to 4,000 and a hydroxyl value of 150 to 350 mg·KOH/g.

Abstract: The present invention relates to a production method of polyalkylene oxide particles including a step of forming the polyalkylene oxide particles by polymerization of an alkylene oxide in a polymerization solution containing a polymerization solvent and a catalyst dispersed in the polymerization solvent. The average particle diameter of the catalyst is 25 ?m or less.

Abstract: A simple procedure is provided by which the hydroxyl termini of poly(ethylene oxide) can be appended with functional groups to a useful extent by reaction and precipitation. The polymer is dissolved in warmed toluene, treated with an excess of organic base and somewhat less of an excess of a reactive acylating reagent, reacted for several hours, then precipitated in isopropanol so that the product can be isolated as a solid, and salt byproducts are washed away. This procedure enables functionalization of the polymer while not requiring laborious purification steps such as solvent-solvent extraction or dialysis to remove undesirable side products.

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: Disclosed herein are glycidol-based polymers, nanoparticles, and methods related thereto useful for drug delivery. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

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.