Patent classifications
C08G59/182
Structural adhesive compositions
Disclosed herein are compositions including (a) a first component comprising (1) an epoxy-adduct that is the reaction product of reactants comprising a first epoxy compound, a polyol, and an anhydride and/or a diacid and (2) a second epoxy compound; (b) rubber particles having a core/shell structure and/or graphenic carbon particles; and (c) a second component that chemically reacts with the first component at ambient or slightly thermal conditions. Also disclosed herein are compositions including (a) an epoxy-capped flexibilizer; (b) a heat-activated latent curing agent; and optionally (c) rubber particles having a core/shell structure and/or graphenic carbon particles; (d) an epoxy/CTBN adduct; and/or (e) an epoxy/dimer acid adduct. The heat-activated latent curing agent may include at least one reaction product of reactants including an epoxy compound and an amine and/or an alkaloid.
CURABLE ADHESIVE COMPOSITIONS FOR FLEXIBLE SUBSTRATES
A thermally or photo curable adhesive composition containing a bisphenol F epoxy resin and a bisphenol A epoxy resin in a ratio between 2 and 10. The composition further contains at least one epoxy acrylate component and a rubber modified bisphenol. The adhesive composition is applicable by a melt or liquid coating technique and undergoes curing upon exposure to heat or radiation, showing improved viscoelastic properties and suitable to provide a cured product having superior durability.
Synthesizing nanocapsules containing reactive amine
A method for nanoencapsulation of an amine adduct in a polymeric shell includes steps of emulsifying a first aqueous solution including the amine adduct into an organic solution including an organic solvent and a polymer to obtain a primary emulsion; emulsifying the primary emulsion into a second aqueous phase including a stabilizer to obtain a secondary emulsion; removing the organic solvent by evaporation to form solid nanocapsules; and separating the formed solid nanocapsules by centrifugation. The nanocapsules have an average size of between about 30 nm and about 597 nm.
Improved Structural Bonding Adhesive
A material comprising an epoxy/elastomer adduct, a polymeric particle, from about 0.05 to about 20 weight percent of an epoxy/diacid adduct, and optionally, an amine reaction product.
STRUCTURAL ADHESIVE COMPOSITIONS
Disclosed herein are compositions including (a) a first component comprising (1) an epoxy-adduct that is the reaction product of reactants comprising a first epoxy compound, a polyol, and an anhydride and/or a diacid and (2) a second epoxy compound; (b) rubber particles having a core/shell structure and/or graphenic carbon particles; and (c) a second component that chemically reacts with the first component at ambient or slightly thermal conditions. Also disclosed herein are compositions including (a) an epoxy-capped flexibilizer; (b) a heat-activated latent curing agent; and optionally (c) rubber particles having a core/shell structure and/or graphenic carbon particles; (d) an epoxy/CTBN adduct; and/or (e) an epoxy/dimer acid adduct. The heat-activated latent curing agent may include at least one reaction product of reactants including an epoxy compound and an amine and/or an alkaloid.
Epoxy resin, epoxy resin composition, epoxy resin cured product and composite material
An epoxy resin, comprising an epoxy compound having a mesogenic structure, and having a value of η′2/η′1 equal to 3 or less, wherein η′1 is an initial dynamic shear viscosity (Pa.Math.s) and η′2 is a maximum value of dynamic shear viscosity (Pa.Math.s), in a measurement of dynamic shear viscosity.
GLYCEROL-BASED EPOXY RESINS
An aliphatic epoxy resin precursor composition containing an epoxy component and, optionally, a reactive component, the composition containing no phenols, wherein the epoxy component is a glycerol-based ether, and wherein the precursor composition contains greater than about 60% (w/w) of the epoxy component and between 0% and 30% (w/w) of the reactive component. A cured aliphatic epoxy resin containing a precursor composition and a curing component, the precursor composition including an epoxy component and, optionally, a reactive component, and the cured resin containing no phenols, wherein the epoxy component is a glycerol-based ether, and wherein the precursor composition contains greater than about 60% (w/w) of the epoxy component and between 0% and 30% (w/w) of the reactive component.
CURABLE COMPOSITIONS, ARTICLES THEREFROM, AND METHODS OF MAKING AND USING SAME
A curable composition includes a first part comprising an epoxy resin; and a second part comprising a multifunctional, functional thiol containing compound. The curable composition further includes an inorganic filler present in an amount of at least 40 weight %, based on the total weight of the curable composition. The multifunctional, functional thiol containing compound comprises ether in the backbone thereof.
ESTER COMPOUND AND RESIN COMPOSITION
Compounds including two or more aromatic rings to which a fluorine-substituted arylcarbonyloxy group is directly bonded are useful as epoxy resin curing agents.
STRUCTURAL ADHESIVE COMPOSITIONS
Disclosed herein are compositions including (a) a first component comprising (1) an epoxy-adduct that is the reaction product of reactants comprising a first epoxy compound, a polyol, and an anhydride and/or a diacid and (2) a second epoxy compound; (b) rubber particles having a core/shell structure and/or graphenic carbon particles; and (c) a second component that chemically reacts with the first component at ambient or slightly thermal conditions. Also disclosed herein are compositions including (a) an epoxy-capped flexibilizer; (b) a heat-activated latent curing agent; and optionally (c) rubber particles having a core/shell structure and/or graphenic carbon particles; (d) an epoxy/CTBN adduct; and/or (e) an epoxy/dimer acid adduct. The heat-activated latent curing agent may include at least one reaction product of reactants including an epoxy compound and an amine and/or an alkaloid.