Abstract: A solid epoxy resin powder coating composition which includes a divinylarene dioxide resin as one component; and wherein the solid epoxy resin powder coating composition can be formed by blending or reacting various other components with the divinylarene dioxide resin. For example, other components can include other epoxy resins; phenolic resins; or monomeric and/or polymeric isocyanates. The powder coating composition or formulation may advantageously provide, for example, a Fusion Bonded Epoxy coating on a substrate.

Abstract: Provided is an epoxy-amine adduct that offers high reactivity, contributes to better adhesion between a resin and a reinforcing fiber in a fiber-reinforced composite material, and can be easily blended with another component such as a resin. The epoxy-amine adduct has two or more amino groups per molecule and is obtained by a reaction of an epoxy compound (A) having two or more alicyclic epoxy groups per molecule with an amine compound (B) having two or more amino groups per molecule.

Abstract: The present disclosure provides a phenolic-free composition containing a benzoxazine, epoxy resin and acid anhydride. The phenolic-free composition, upon curing, renders void free cured articles having well balanced thermal, chemical and mechanical properties. The phenolic-free composition may be used in a variety of applications, such as in coatings, structural composites and encapsulating systems for electronic and electrical components.

Abstract: An epoxy resin hardener composition including a reaction product of (i) a compound having at least one vicinal epoxy group, and (ii) an amino alcohol; an epoxy resin composition including the epoxy resin hardener composition and a compound having at least one vicinal epoxy group; and a powder coating composition including particles of the epoxy resin hardener composition and particles of a compound having at least one vicinal epoxy group.

Abstract: The present invention relates to a matrix material for a carbon fiber-reinforced composite. The matrix material for the carbon fiber composite contains a matrix resin as a resin component. The matrix resin contains at least a first epoxy resin containing a polyfunctional glycidylamine-type epoxy resin having four epoxy groups in one molecule. The matrix resin may further contain at least one of a p-aminophenol-type epoxy resin having three epoxy groups in one molecule, and a tetramethylbiphenol-type solid epoxy resin having two epoxy groups in one molecule. The matrix resin has an average epoxy equivalency of 99 to 163.

Abstract: It is an object to provide a liquid thermosetting composition that yields an epoxy resin having physical properties of the cured product such as high flexural strength along with adequate handleability as liquid, to be used in transparent sealants for optical semiconductors, such as transparent sealants for LEDs (light-emitting devices) and the like. There is provided a thermosetting composition containing an epoxy compound that a side chain between a triazinetrione ring and an epoxy group substituted on the triazinetrione ring is long (elongated).

Abstract: A process for curing epoxy resins which comprises curing epoxy resin compositions comprising a) epoxy resins and b) a compound of the general formula I in which R1 and R2 independently of one another are hydrogen, C1-C6-alkyl, C1-C4-alkoxy-C1-C4-alkyl, C5-C6-cycloalkyl, phenyl, phenyl-C1-C4-alkyl, C2-C6-alkenyl or C2-C6-alkynyl, or R1 and R2 together are a C3-C11-alkylene group; R3 and R4 independently of one another are hydrogen, C1-C6-alkyl, C1-C4-alkoxy-C1-C4-alkyl, C5-C6-cycloalkyl, phenyl, phenyl-C1-C4-alkyl, C2-C6-alkenyl or C2-C6-alkynyl, or R3 and R4 together are a C4-C6-alkylene group; by adding amino hardeners, and the curing takes place in the presence of a compound of the following formula II in which at least one of the radicals R11, R12 and R13 is a hydrocarbon group having 1 to 10 C atoms, which is substituted with a hydroxyl group and optionally remaining radicals R11 to R13 are an unsubstituted hydrocarbon group having 1 to 10 C atoms.

Abstract: A hem-curing epoxy resin composition, that includes an epoxy resin A having more than one epoxy group per molecule on average; a curing agent B for epoxy resins, which is activated at a temperature in a range of 100° C. to 220° C.; and an activator C for epoxy resin compositions, wherein activator C is a compound of formula (I), or is a reaction product between a compound of formula (Ia) and an isocyanate or an epoxide.

Abstract: Provided are: a curable epoxy resin composition including an alicyclic epoxy compound (A), a monoallyl diglycidyl isocyanurate compound (B) represented by following Formula (1) where each of R1s and R2 represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, and a curing agent (C) or curing catalyst (D); and a cured article obtained through curing of the curable epoxy resin composition. The alicyclic epoxy compound (A) preferably has cyclohexene oxide group as the alicyclic epoxy group.

Abstract: Novel adhesive compositions that can be used in the die attach process. The adhesives include a curable resin component, a curing agent, and a block copolymer additive. The block copolymer additive has a glass transition temperature of at least about 40° C. The block copolymer additive improves the affinity of the adhesive composition to a hydrophilic substrate, such as a silicon wafer, during the die pickup process. Also disclosed is an assembly which includes a hydrophilic substrate and a layer of adhesive and methods of producing the assembly.

Abstract: The present invention is an epoxy resin composition characterized by containing component A (epoxy resin containing sulfur atoms in the molecule thereof); and component B (an epoxy resin composition containing an imidazole compound represented by formula (1), and at least one of the following components: component C (an imidazole compound represented by formula (2) below) or component D (an epoxy resin composition having at least one sulfur atom in the molecule. According to the present invention, it is possible to provide an epoxy resin composition which has outstanding stability when stored at room temperature, and which can be heat-cured at a relatively low temperature and over a short time, to give a resin with a high heat resistance when cured. (In formula (1), R1 represents a straight-chain or branched-chain alkyl group having 1 to 5 carbon atoms, or a hydroxymethyl group, R2 represents a straight-chain or branched-chain alkyl group having 1 to 5 carbon atoms, or a hydrogen atom.

Abstract: Disclosed herein are a resin composition for a printed circuit board, an insulating film, a prepreg, and a printed circuit board, the resin composition including: a composite epoxy resin containing a bisphenol A type epoxy resin, a cresol novolac epoxy resin, a rubber-modified epoxy resin, a phosphorus based epoxy resin, and an alkyl sulfonated tetrazole-modified epoxy resin; and a curing agent. The insulating film and the prepreg according to the present invention may have basically low coefficient of thermal expansion, excellent heat resistance, a high glass transition temperature, and excellent adhesion force with the metal.

Abstract: An adhesive composition comprising elastomeric polymer, epoxy resin, reactive diluent, and filler, is suitable for use within the electronics industry, and in particular for wafer back side coating adhesives. The elastomeric polymer is a mixture of a vinyl elastomer and an epoxy elastomer; the reactive diluent is a combination of two or more diluents, one of which must have carbon to carbon unsaturation, providing cross-linking within the composition after cure; and the filler is a non-conductive filler.

Abstract: A mixture of superabsorbents having differing surface postcrosslinking, more particularly a mixture of differingly surface-postcrosslinked sieve cuts of a base polymer, exhibits improved absorption and retention over a unitarily surface-postcrosslinked superabsorbent.

Abstract: A curing resin composition that cures in two stages: photo cure and thermal cure, hardly contaminates a liquid or liquid crystals when in contact with, and provides high adhesive strength, particularly a curing composition that photocures sufficiently even when shadowed by TFT wires, a black matrix, etc. in photocuring; and a sealant, a sealant for ODF (one-drop-fill), and an LCD containing the curing resin composition.

Abstract: A curing agent composition including at least one benzylated polyamine compound. The benzylated polyamine compound is a reaction product of a benzaldehyde compound or benzyl halide compound and a polyamine according to the following formula: H2N—CH2-A-CH2-NH2 where A is a phenylene group or a cyclohexylene group. A method for making the curing agent composition and an amine-epoxy composition are also disclosed.

Abstract: This invention discloses cationic electrodeposition paint compositions which comprise specific amino group-containing modified epoxy resin, specific xylene-formaldehyde resin-modified, amino group-containing epoxy resin and blocked polyisocyanate curing agent at specific blend ratios, and which can form coating film of excellent film thickness retention, finished appearance and electrocoatability on galvanized alloy steel sheet and of good corrosion resistance, even when the amount of volatile organic compound in the cationic electrodeposition paint is reduced.

Abstract: Room temperature curing epoxy adhesives that show good adhesion to plastic substrates are described. The adhesives contain an epoxy resin component comprising a first epoxy resin and a second epoxy resin; a first amine curing agent having an equivalent weight of at least 50 grams per mole of amine equivalents; a second amine curing agent having an equivalent weight of no greater than 45 grams per mole of amine equivalents; an acetoacetoxy-functionalized compound; a metal salt catalyst; and a multifunctional acrylate.

Abstract: A solder resist having both adequate sensitivity at photo-irradiation and alkali developability, and the solder resist forming a cured product which is excellent in dimensional stability against temperature change, does not exhibit brittleness, and further, is excellent in water resistance, electrical insulation, thermal cycle test resistance (TCT resistance) and the like is provided, and further, a dry film having a solder resist layer, a cured product and a printed wiring board are provided. The solder resist comprising an acid-modified vinyl ester synthesized from an epoxy compound, a phenol compound, an unsaturated monobasic acid and a polybasic acid anhydride, wherein the epoxy compound contains a crystalline epoxy resin having a melting point of 90° C. or more, and the phenol compound contains a compound having a bisphenol S structure.

Abstract: The present invention has a purpose of providing an epoxy composition for encapsulating an optical semiconductor element which composition provides a cured product having a low gas permeability and excellent curability in a form of a thin film together with good light transmission and crack resistance. The present invention provides a composition comprising (A) a silicone-modified epoxy compound represented by the formula (1), (B) a curing agent and (C) a polyhydric alcohol. The present invention further provides a composition comprising a composition prepared by reacting (A) the silicone-modified epoxy compound, (B) the curing agent and (C) the polyhydric alcohol and (D) a curing catalyst, and a cured product thereof.

Abstract: The solvent resistance of epoxy resins toughened with polyethersulfone is improved by using low molecular weight polyethersulfone. The resulting thermoplastic toughened epoxy resins are useful for making prepreg for aerospace applications.

Abstract: A powdered epoxy coating composition for coating a substrate. The coating composition comprises: (a) from about 50 wt % to about 90 wt % of at least one epoxy resin; (b) from about 1 wt % to about 30 wt % of at least one catechol novolak-type adhesion promoter; and (c) from about 0.1 wt % to about 5 wt % of magnesium oxide. The coating may also include from about 10 wt % to about 48 wt % of an inorganic filler. The coating composition provides improved adhesion at high temperature operating conditions and improved resistance to damage by cathodic disbondment for pipe, rebar, and other substrates.

Abstract: This invention relates to compositions useful as adhesives and more particularly to the preparation of epoxy-based adhesive composition with improved impact resistance and good adhesion to oily metal substrates.

Abstract: Embodiments of the present disclosure include a thermoset cross-linked network and a method of producing the thermoset cross-linked network from a reaction product of a curable epoxy system in a liquid phase and cross-linked reactive polymer microparticles in a solid phase. For the various embodiments, the cross-linked reactive polymer microparticles have a cross-link density and reactive groups that covalently react with the curable epoxy system to provide the thermoset cross-linked network in a single contiguous phase having a topological heterogeneity.

Abstract: Epoxy reactive liquid modifiers include acrylate functionalized compounds, acrylamide functionalized compounds, oxalic amide functionalized compounds, actoacetoxy functionalized urethanes and acetoacetoxy functionalized polyalkenes. The reactive liquid modifiers are incorporated into epoxy resin compositions comprising a curable epoxy resin, an amine curing agent, and the reactive liquid modifier, wherein the reactive liquid modifier is polymerized to form at least one of an interpenetrating polymer network and a semi-interpenetrating polymer network with the curable epoxy resin.

Abstract: The disclosure provides a thermosetting composition, including: (a) about 1-35 wt % of an oligomer, wherein the oligomer is obtained by reacting a liquid epoxy resin with an aromatic primary amine having four active hydrogen atoms, and the liquid epoxy resin and the primary amine have an equivalent mole ratio of 1:0.15-1:2.50; (b) about 5-10 wt % of a long chain resin; (c) about 50-80 wt % of an epoxy resin having at least two functional groups; and (d) about 5-15 wt % of a plasticizer.

Abstract: Embodiments of the present disclosure include an epoxy-adduct hardening agent formed as a reaction product of a first adduct formed as a reaction product of a first epoxy resin and a polyether monoamine and second adduct formed as a reaction product of an ethyleneamine and a glycidyl ether. Embodiments include a curable composition having an epoxy resin and the epoxy-adduct hardening agent.

Abstract: A process for curing an epoxy resin composition containing an epoxy resin and a compound of the general formula I: where R1 and R2 independently are hydrogen, C1-C6-alkyl, C1-C4-alkoxy-C1-C4-alkyl, C5-C6-cycloalkyl, phenyl, phenyl-C1-C4-alkyl, C2-C6-alkenyl or C2-C6-alkynyl, or R1 and R2 together are a C3-C11-alkylene group; and where R3 and R4 independently are hydrogen, C1-C6-alkyl, C1-C4-alkoxy-C1-C4-alkyl, C5-C6-cycloalkyl, phenyl, phenyl-C1-C4-alkyl, C2-C6-alkenyl or C2-C6-alkynyl, or R3 and R4 together are a C4-C6-alkylene group. The process includes adding amino hardeners, where 0.1% to 50% by weight of the amino hardeners are aliphatic, cycloaliphatic or aromatic amine compounds having 1 to 4 primary amino groups and optionally further functional groups, selected from secondary amino groups, tertiary amino groups, and hydroxyl groups.

Abstract: A curing agent for epoxy resins that is comprised of the reaction product of an amine, an epoxy resin, and an elastomer-epoxy adduct; compositions containing the curing agent and an epoxy resin; the compositions are useful in electronic displays, circuit boards, semi conductor devices, flip chips and other applications.

Abstract: The present invention provides N,N?-dimethyl secondary diamine polymers including methylamine-terminated poly-(N-methylazetidine) and methylamine-terminated poly-(N-methylazacycloheptane). Amine compositions and amine-epoxy compositions comprising N,N?-dimethyl secondary diamine polymers are also disclosed.

Abstract: The invention relates to novel polyalkylene glycol compounds and methods of using them. In particular, compounds comprising a novel polyethylene glycol conjugate are used alone, or in combination with antiviral agents to treat a viral infection, such as chronic hepatitis C.

Abstract: The invention is a radiation curable coating composition containing epoxyacrylate formed by ring opening reaction between (meth)acrylic acid and a self-dispersing epoxy resin in an aqueous system.

Abstract: Thermosetting adhesive compositions formed from an epoxy resin containing nano-sized core-shell particles, one or more thermoplastic toughening agent containing an amine-terminated polyethersulfone, and at least one multi-functional epoxy resin, together with at least one amine curing agent to allow full cure of the adhesive composition up to 400° F. are provided herein. Such compositions are useful for forming adhesive films that can bond composite/metal/honeycomb structures for aerospace including bonding of aircraft leading or trailing edges, acoustic nacelle structures, horizontal and vertical tail, and various other structures, as well as for other high performance industrial applications.

Abstract: An epoxy resin composition containing an epoxy resin [A1], epoxy resin [B1], epoxy resin [C1] and curing agent [D] wherein [A1] is a bisphenol-type epoxy resin with a softening point of 90° C. or more, [B1] is a tri- or higher functional amine-type epoxy resin, [C1] is a bisphenol F-type epoxy resin with a number average molecular weight of 450 or less, and the epoxy resins [A1] to [C1] satisfy the following contents per 100 parts by mass of total epoxy resin content: [A1] 20 to 50 parts by mass, [B1] 30 to 50 parts by mass and [C1] 10 to 40 parts. The present invention provides low-viscosity epoxy resin compositions that are excellent in impregnating reinforcing fibers and capable of producing cured resins with excellent modulus and toughness, as well as prepregs and fiber-reinforced composite materials based on those epoxy resin compositions.

Abstract: Provided are a resin composition for the manufacture of marble chips including a halogenated epoxy resin binder and showing high heat resistance, high chemical resistance, high impact resistance, high specific gravity and high transparency, a marble chip manufacturing method using the resin composition and an artificial marble made from marble chips.

Abstract: A process for curing an epoxy resin composition containing an epoxy resin and a compound of the general formula I: where R1 and R2 independently are hydrogen, C1-C6-alkyl, C1-C4-alkoxy-C1-C4-alkyl, C5-C6-cycloalkyl, phenyl, phenyl-C1-C4-alkyl, C2-C6-alkenyl or C2-C6-alkynyl, or R1 and R2 together are a C3-C11-alkylene group; and where R3 and R4 independently are hydrogen, C1-C6-alkyl, C1-C4-alkoxy-C1-C4-alkyl, C5-C6-cycloalkyl, phenyl, phenyl-C1-C4-alkyl, C2-C6-alkenyl or C2-C6-alkynyl, or R3 and R4 together are a C4-C6-alkylene group. The process includes adding amino hardeners, where 0.1% to 50% by weight of the amino hardeners are aliphatic, cycloaliphatic or aromatic amine compounds having 1 to 4 primary amino groups and optionally further functional groups, selected from secondary amino groups, tertiary amino groups, and hydroxyl groups.

Abstract: An epoxy resin hardener composition including a reaction product of (i) a compound having at least one vicinal epoxy group, and (ii) an amino alcohol; an epoxy resin composition including the epoxy resin hardener composition and a compound having at least one vicinal epoxy group; and a powder coating composition including particles of the epoxy resin hardener composition and particles of a compound having at least one vicinal epoxy group.

Abstract: An one-part epoxy resin composition for the use of bonding of a coil which is preferable for impregnation of a motor and a generator for an automobile, especially of a drive motor-generator set for a hybrid car, which has superior storage stability and a cured resin of the composition has excellent adhesion properties, thermal stability, and reliability, are provided. The one-part epoxy resin composition of the present invention comprises (A) a bisphenol A type and/or F type epoxy resin which is in liquid form at room temperature, (B) methylnadic anhydride as a cycloaliphatic anhydride which is in liquid form at room temperature, and (C) a nitrogen-containing latent hardening accelerator.

Abstract: Disclosed is a carbon-fiber-reinforced composite material that is suitable for use as a construction material and exhibits high mechanical strength in harsh usage environments such as low-temperature environments and high-temperature moisture-absorbing environments. Also disclosed are an epoxy resin composition for producing the aforementioned carbon-fiber-rein-forced composite material and a prepreg obtained through the use of said epoxy resin composition. Said epoxy resin composition comprises at least the following constituents, by mass with respect to the total mass of the composition: (A) between 20% and 80% of an epoxy resin having the structure represented by formula (1); and (B) between 10% and 50% of an epoxy resin that has at least two ring structures with four or more members each and also has one amine glycidyl or ether glycidyl directly connected to a ring structure.

Abstract: Novel adhesive compositions that can be used in the die attach process. The adhesives include a curable resin component, a curing agent, and a block copolymer additive. The block copolymer additive has a glass transition temperature of at least about 40° C. The block copolymer additive improves the affinity of the adhesive composition to a hydrophilic substrate, such as a silicon wafer, during the die pickup process. Also disclosed is an assembly which includes a hydrophilic substrate and a layer of adhesive and methods of producing the assembly.

Abstract: A multi-component curable composition which is reactive upon admixing of the components and wherein the composition comprises: A. a first component which comprises: (i) a first amine functional adduct which comprises the reaction product of a stoichiometric excess of a diamine and a compound having an epoxide group and an alpha, beta unsaturated carbonyl group; B. a second component which comprises: (i) at least one compound having an average of more than 2.0 groups per molecule which are reactive with amines.

Abstract: A multi-component curable composition which is reactive upon admixing of the components and wherein the composition comprises a first component which comprises a first amine functional adduct and a second amine functional adduct; and a second component which comprises at least one compound having an average of more than 2.0 groups per molecule which are reactive with amines.

Abstract: The invention relates to a curing agent for epoxy resins, comprising a phenalkamine blended with a salted polyamine or a salted polyamine-epoxy adduct to form a curing agent for an epoxy resin, wherein at least one-third of the primary amine groups of the salted polyamine or the salted polyamine-epoxy adduct are blocked.

Abstract: A polyamine adduct including the reaction product of (a) a divinylarene dioxide, and (b) an excess of a polyamine to provide an adducted polyamine composition; a process for making the adduct; a curable epoxy resin composition including (i) the adduct derived from divinylbenzene such as divinylbenzene dioxide (DVBDO), (ii) at least one epoxy resin, and (iii) optionally, a co-curing agent and/or a catalyst; and a cured product made from said curable epoxy resin composition. The cured product made from the curable epoxy resin composition is thermally stable and offers improved properties such as a low viscosity and a high heat resistance.

Abstract: An epoxy resin composition including a divinylarene dioxide, for example a divinylbenzene dioxide, wherein the divinylarene dioxide has an impurity concentration of less than about 15 weight percent styrenic impurities such as ethylstyrene. Such prepared divinylarene dioxides may be used to prepare curable epoxy resin compositions or formulations, including a blend of a divinylarene dioxide and at least another epoxy resin different from the divinylarene dioxide; and a curable epoxy resin composition including (i) the blend of epoxy resins of the divinylarene dioxide and the at least one epoxy resin different from the divinylarene dioxide; (ii) at least one curing agent; and (iii) optionally, at least one catalyst. The significantly lower concentration of styrenic impurities in the divinylarene dioxides of the present invention provides an epoxy resin composition having low viscosity, better storage stability, and better thermal stability.

Abstract: Embodiments include an amine adduct obtainable by reacting an amine compound having at least two amino groups and a monoalkylpolyalkylene glycidyl ether having the formula (C2H3O)—CH2—O—(CH2—(CHR1)—O)n, —R2, wherein n is 1 to 50, each R1 is independently H or CH3, and R2 is an alkyl group. Embodiments include a curable composition including a resin component and a hardener component that includes the amine adduct.

Abstract: Disclosed is a fiber-reinforced composite material that is high in heat resistance and strength while being low in the content of volatile matter that volatilizes during curing. Also disclosed are an epoxy resin composition for production thereof, and a prepreg produced from the epoxy resin composition. Specifically the invention provides an epoxy resin composition comprising: [A] an epoxy resin comprising two or more ring structures each consisting of four or more members, and at least one amine type or ether type glycidyl group directly connected to the ring structures, [B] a tri- or more-functional epoxy resin, and [C] a curing agent, and also provides a prepreg produced by impregnating reinforcing fiber with the epoxy resin composition and a fiber-reinforced composite material produced by curing the prepreg.

Abstract: A method of obtaining hybrid polyhydroxyurethane compositions cross-linked at ambient temperatures. The method comprises: (a) reacting epoxidized unsaturated fatty acid triglycerides with carbon dioxide in the presence of a catalyst to obtain carbonated-epoxidized unsaturated fatty acid triglycerides, wherein conversion of oxyrane groups to 2-oxo-1,3-dioxolane groups (cyclic carbonate groups) for said carbonated-epoxidized unsaturated fatty acid triglycerides ranges from 35% to 85%; (b) mixing and reacting the carbonated-epoxidized unsaturated fatty acid triglycerides with a compound having amine functionality comprising at least one primary amine group realized at stoichiometric or within nearly balanced stoichiometry; (c) mixing and reacting the product of step (b) with a compound having amine functionality comprising at least two primary amine groups realized at excess of an amine-functional compound; (d) subsequently mixing the product of step (c) with a compound having amino-reactive groups.

Abstract: A pigment dispersing resin is disclosed along with pigment dispersion, electrodepositable coating compositions using the pigment dispersing resin, and methods for applying the electrodepositable coating composition. The pigment dispersing resin consists essentially of the carboxylic acid salt of an aminated bisphenol epoxy resin and an alkoxylated styrenated phenol. Pigment dispersions made from the dispersing resin are especially useful for forming low or no volatile organic content electrocoating baths.

Abstract: A prepreg composite material that includes a fiber layer and a resin comprising a thermoset resin component, a curing agent and a fibrous micropulp. The micropulp component is an aramid fiber having a volume average length of from 0.01 to 100 micrometers. The prepreg is useful in composite panel construction for minimizing fluid permeation into the cured structure. This prepreg is particularly suitable for making honeycomb sandwich panels. Film adhesives, liquid and paste resins containing aramid fiber micropulp are also disclosed.