Abstract Aqueous two-component systems based on epoxide resins and diamines, containing water in an amount of 1 to 20 wt. % which are prepared by mixing: (a) as a curing agent, a (cyclo)aliphatic di-primary-diamine having 2 to 12 carbon atoms, in homogeneous solution with 2-40 wt. % water, (b) as an epoxide resin component, (i) a polyglycide compound of a bisphenol, an aliphatic polyol, a polyether polyol, a dicarboxylic acid, or a mixture of these polyglycide compounds and (ii) a polyacrylate of a polyol or a polyether polyol, have a low water content, are cold-curable, yield elastic coatings with good solvent resistance, and may be applied in thick layers and with a high filler content. The systems may be used for coating inorganic and organic materials.
A method of coating a material, comprising the steps of: (1) providing a first component, which is a curing agent, comprising a (cyclo)aliphatic di-primary-diamine having 2 to 12 carbon atoms, dissolved in 2 to 40 wt. % water; (2) providing a second component, which is an epoxy resin component, comprising a mixture of (i) at least one compound selected from the group consisting of a polyglycide of a bisphenol, a polyglycide of an aliphatic polyol, a polyglycide of a polyester polyol and a polyglycide of a dicarboxylic acid, and (ii) a polyacrylate of a polyol or a polyacrylate of a polyether polyol; (3) admixing said first component and said second component to form a water-in-oil emulsion wherein the total amount of water is 1 to 20 wt. %; (4) coating said material with said so-formed emulsion to form a coating layer; and (5) curing said coating layer.
Claim 2
Independent Claim
147 words
A method of coating a material, comprising the steps of: (1) providing a first component, which is a curing agent, comprising a (cyclo)aliphatic di-primary-diamine having 2 to 12 carbon atoms, dissolved in 2 to 40 wt. % water; (2) providing a second component, which is an epoxy resin component, comprising a mixture of (i) at least one compound selected from the group consisting of a polyglycide of a bisphenol, a polyglycide of an aliphatic polyol, a polyglycide of a polyester polyol and a polyglycide of a dicarboxylic acid, and (ii) a polyacrylate of a polyol or a polyacrylate of a polyether polyol; (3) admixing said first component and said second component to form a water-in-oil emulsion wherein the total amount of water is 1 to 20 wt. %; (4) coating said material with said so-formed emulsion to form a coating layer; and (5) curing said coating layer.
Claim 3
Dependent Claim
19 words
The method of claim 1, wherein said material is selected from the group consisting of metals, plastics and minerals.