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.

The present invention provides a curable composition containing a urethane-modified epoxy resin (A) as an essential component of a main agent and an acid anhydride (B) as an essential component of a curing agent, the urethane-modified epoxy resin (A) being a reaction product obtained by using a polyisocyanate compound (a1), a polyether polyol (a2), and a hydroxy group-containing epoxy resin (a3) as essential reaction materials; a cured product thereof; a fiber-reinforced composite material; a fiber-reinforced resin molded article; and a method for producing a fiber-reinforced resin molded article. The curable composition can form a cured product having excellent fracture toughness and tensile strength in the cured product.

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 20 weight %, based on the total weight of the curable composition. The multifunctional, functional thiol containing compound comprises an ether in the backbone thereof.

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.

A curable composition, includes a diluent, an epoxy functionalized resin derived from a nutshell oil, an epoxy-rubber copolymer adduct, and a curing agent. There is disclosed a method for making the curable composition, a method of imbuing improved flexibility to a curable composition and a method for improving oily metal adhesion of a curable composition. The method of imbuing improved flexibility to a curable composition includes providing a curable composition, adding an epoxy functionalized resin derived from a nutshell oil and adding a liquid modified hydrocarbon resin derived from a nutshell oil.

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.

A curing agent for epoxy resins, containing at least one amine adduct of formula (I) which can be obtained as an addition product of a mixture of a primary diamine, a monoalkylated other diamine and a polyepoxide. The curing agent makes it possible to produce low-odor, low-emission epoxy resin products, in particular coatings, which have a surprisingly low viscosity, a high curing rate, a high final hardness, and a surprisingly appealing surface.

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.

An epoxy resin, comprising an epoxy compound having a mesogenic structure, and having a value of 2/1 equal to 3 or less, wherein is an initial dynamic shear viscosity (Pa.Math.s) and 2 is a maximum value of dynamic shear viscosity (Pa.Math.s), in a measurement of dynamic shear viscosity.

Polymers useful in formulating dispersing agents for pigments are disclosed. One such polymer can be made from a glycidyl intermediate. A nucleophilic initiator can be reacted with epichlorohydrin to produce a glycidyl intermediate. This intermediate is reacted with an aralkylated phenol to give a hydroxy-functional hydrophobe. Alkoxylation of the hydrophobe gives the desired polymer. In an alternative, approach, the polymer is made by reacting the nucleophilic initiator with an aralkylated phenol glycidyl ether to give the hydroxy-functional hydrophobe, which is then alkoxylated. Pigments dispersions comprising the polymers are also disclosed. The polymers meet the growing needs of the industry with their ease of manufacture, diverse structures, and desirable performance attributes for dispersing a wide range of organic and inorganic pigments. Agricultural applications for the polymers are also disclosed.