Abstract: Provided herein is a hardener composition comprising (a) a first adduct comprising a reaction product of a liquid epoxy resin and isophorone diamine; (b) a second adduct comprising a reaction product of a liquid epoxy resin and m-xylylenediamine; and (c) an accelerator component comprising methanesulfonic acid.

Abstract: Provided herein is a hardener composition comprising (a) a first adduct comprising a reaction product of a liquid epoxy resin and isophorone diamine; (b) a second adduct comprising a reaction product of a liquid epoxy resin and m-xylylenediamine; and (c) an accelerator component comprising methanesulfonic acid.

Abstract: Provided herein is a solid hardener composition comprising the reaction product of (a) a novolac resin component, (b) a liquid epoxy resin, and (c) an epoxidized polyalkylene glycol. Also provided herein is a method of preparing a hardener composition, the method comprising (1) forming a reaction mixture comprising (a) a novolac resin component, (b) a liquid epoxy resin, and (c) an epoxidized polyalkylene glycol, and (2) isolating the reaction product of the reaction mixture. The solid hardener composition may be incorporated into a curable composition comprising at least one epoxy resin and used to produce, e.g., solid powder coatings.

Abstract: A hardener composition comprising: a) an isolated adduct comprising a reaction product of i) a polymer with a functionality of at least three, wherein said polymer contains at least one epoxy group; and ii) an amine wherein the isolated adduct is present as an aqueous solution; and b) a capping agent. This hardener can be used with a liquid epoxy resin to form a curable composition.

Abstract: A hardener composition including: (a) a polymeric adduct; (b) a monomeric unmodified amine; and (c) an extender; a curable composition including (A) at least one epoxy compound; and (B) the above hardener composition; and a thermoset prepared from the above curable composition.

Abstract: A hardener composition comprising a) an accelerator comprising a first amine at least partially neutralized by salicylic acid and a first modifier; b) a non-isolated adduct of i) a difunctional epoxy; and ii) a second amine; and c) a second modifier, and a process for making the hardener composition, are disclosed. The hardener can be used with an epoxy resin to form a curable composition.

Abstract: A process comprising: a) producing a first adduct comprising a reaction product of a difunctional epoxy and Isophrondiamine (IPDA); b) producing a second adduct comprising a reaction product of a difunctional epoxy and m-Xylylenediamine (MXDA) and c) contacting i) the first adduct; ii) the second adduct; iii) an accelerator; and iv) a modifier to form a hardener composition, is disclosed. The hardener composition can be used with an epoxy compound to form a curable composition.

Abstract: A hardener composition comprising: a) an isolated adduct comprising a reaction product of i) a polymer with a functionality of at least three, wherein said polymer contains at least one epoxy group; and ii) an amine wherein the isolated adduct is present as an aqueous solution; and b) a capping agent. This hardener can be used with a liquid epoxy resin to form a curable composition.

Abstract: Embodiments include curable compositions including a resin component and a hardener component. The resin component can include an epoxy compound that is selected from the group consisting of aromatic epoxy compounds, alicyclic epoxy compounds, aliphatic epoxy compounds, and combinations thereof, and a reactive diluent that includes a polymeric glycidyl ether. The hardener component can include an adduct and a Mannich base.

Abstract: A hardener composition comprising: a) a non-isolated adduct of i) a monofunctional epoxy; and ii) a first amine; b) a second amine; c) a modifier; and d) an accelerator, is disclosed. The hardener composition can be combined with an epoxy resin to make a composition useful to prepare primers.

Abstract: A hardener composition comprising a) an accelerator comprising a first amine at least partially neutralized by salicylic acid and a first modifier; b) a non-isolated adduct of i) a difunctional epoxy; and ii) a second amine; and c) a second modifier, and a process for making the hardener composition, are disclosed. The hardener can be used with an epoxy resin to form a curable composition.

Abstract: Embodiments include curable compositions including a resin component and a hardener component. The resin component can include an epoxy compound that is selected from the group consisting of aromatic epoxy compounds, alicyclic epoxy compounds, aliphatic epoxy compounds, and combinations thereof, and a reactive diluent that includes a polymeric glycidyl ether. The hardener component can include an adduct and a Mannich base.

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: A thermosettable composition including (a) a thermosetting resin and (b) at least one toughening agent; wherein the at least one toughening agent is a glycidyl ether based on trimethylolpropane octadecaethoxilate (TMP-18EO).