The present disclosure is directed to a two-component epoxy resin paint, comprising a) an epoxy resin component; and b) an amine component for curing the epoxy resin component, the amine component comprising: i) at least one polyamide curing agent; and ii) at least one Mannich base curing agent, wherein at least one of the polyamide curing agent and the Mannich base curing agent is derived from one or more multifunctional amines comprising at least one cycloaliphatic multifunctional amine, and wherein the cycloaliphatic multifunctional amine is present in an amount of 30 wt % or more relative to the total amount of the multifunctional amines, wherein the ratio by weight of the epoxy resin component a) to the amine component b) is in the range of 100:8 to 100:20.

The present disclosure is directed to a two-component epoxy resin paint, comprising a) an epoxy resin component; and b) an amine component for curing the epoxy resin component, the amine component comprising: i) at least one polyamide curing agent; and ii) at least one Mannich base curing agent, wherein at least one of the polyamide curing agent and the Mannich base curing agent is derived from one or more multifunctional amines comprising at least one cycloaliphatic multifunctional amine, and wherein the cycloaliphatic multifunctional amine is present in an amount of 30 wt % or more relative to the total amount of the multifunctional amines, wherein the ratio by weight of the epoxy resin component a) to the amine component b) is in the range of 100:8 to 100:20.

This invention relates to a two-part epoxy based composition, comprising a first part comprising at least one epoxy resin; a second part comprising at least one epoxy resin curing agent, and at least one acrylamide compound containing a hydrogen atom bound to the nitrogen atom in the acrylamide structure. The two-part epoxy based composition according to the present invention exhibits excellent adhesion strength to low surface tension substrates, such as stainless steel and PVC.

A hot melt epoxy resin system includes an epoxy resin composition and a curing agent/catalyst paste composition that is fast curable, isothermal press curable, hot demoldable capable under three minutes at 150 C. and Class A surface giving and suitable to use in the production of automotive interior composite parts, wherein the epoxy resin composition includes an epoxy resin mixture including a first resin and a second resin; at least one thermoplastic toughener; at least one UV hindered amine light stabilizer; at least one UV absorber and/or blocker; 1,3,5-tris(4-tert.-butyl-3-hydroxy-2,6-dimethylbenzyl)-1,3,5-triazine-2,4,6-(1H,3H,5H)-trione as anti-oxidant; hydrophobic fumed silica as air release/rheology agent and hexamethyldisiloxane as an internal mold release agent and the curing agent/catalyst paste composition comprises a paste mixture, which is comprising dicyandiamide (DICY) below a 10 m particle size and sebacic dihydrazide below a 10 m particle size.

A hot melt epoxy resin system includes an epoxy resin composition and a curing agent/catalyst paste composition that is fast curable, isothermal press curable, hot demoldable capable under three minutes at 150 C. and Class A surface giving and suitable to use in the production of automotive interior composite parts, wherein the epoxy resin composition includes an epoxy resin mixture including a first resin and a second resin; at least one thermoplastic toughener; at least one UV hindered amine light stabilizer; at least one UV absorber and/or blocker; 1,3,5-tris(4-tert.-butyl-3-hydroxy-2,6-dimethylbenzyl)-1,3,5-triazine-2,4,6-(1H,3H,5H)-trione as anti-oxidant; hydrophobic fumed silica as air release/rheology agent and hexamethyldisiloxane as an internal mold release agent and the curing agent/catalyst paste composition comprises a paste mixture, which is comprising dicyandiamide (DICY) below a 10 m particle size and sebacic dihydrazide below a 10 m particle size.

A coating film formed by curing of an epoxy resin composition containing at least an epoxy resin, an epoxy resin curing agent and a solvent, wherein the coating film contains the solvent in a ratio of 1% by mass or more and 20% by mass or less, and the epoxy resin curing agent is a reaction product of the following (A) and (B). (A) At least one selected from the group consisting of metaxylylenediamine and paraxylylenediamine. (B) At least one selected from the group consisting of an unsaturated carboxylic acid represented by the following formula (1) and a derivative thereof: ##STR00001##
wherein R.sup.1 and R.sup.2 each independently represent 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.

A coating film formed by curing of an epoxy resin composition containing at least an epoxy resin, an epoxy resin curing agent and a solvent, wherein the coating film contains the solvent in a ratio of 1% by mass or more and 20% by mass or less, and the epoxy resin curing agent is a reaction product of the following (A) and (B). (A) At least one selected from the group consisting of metaxylylenediamine and paraxylylenediamine. (B) At least one selected from the group consisting of an unsaturated carboxylic acid represented by the following formula (1) and a derivative thereof: ##STR00001##
wherein R.sup.1 and R.sup.2 each independently represent 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.

A curable composition includes a polyamide composition comprising a polyamide. The polyamide comprises a tertiary amide in the backbone thereof and is amine terminated. The curable composition also comprises an epoxy composition that includes an epoxy resin.

Methods and materials for sand control in water injection sites are disclosed. Proppant particles may be coated with some particles coated with a solid epoxy and other proppant particles coated with a solid epoxy curative (such as amine, hydroxyl, carboxyl, anhydride) that would bind the particles through an epoxy reaction. The invention may be advantageous for forming underground structures useful in the extraction of hydrocarbons.

Methods and materials for sand control in water injection sites are disclosed. Proppant particles may be coated with some particles coated with a solid epoxy and other proppant particles coated with a solid epoxy curative (such as amine, hydroxyl, carboxyl, anhydride) that would bind the particles through an epoxy reaction. The invention may be advantageous for forming underground structures useful in the extraction of hydrocarbons.