Ketone-Aldehyde Resins (Ketonic Resins)

Properties and Applications

Ketone-aldehyde resins, also known as cyclohexanone-aldehyde resins or ketonic resins, are condensation products of cyclohexanone and an aldehyde such as formaldehyde or isobutyraldehyde. These products are typically pale to light yellow solids that are soluble in a range of solvents including aromatic and chlorinated hydrocarbons, ketones, esters, and many alcohols, but have only limited solubility in water and nonpolar solvents such as mineral oil, aliphactic and alicyclic hydrocarbons.

Ketonic resins are usually blended with other binders in coating formulations and solvent based pigment pastes. They are compatible with many types of resins including alkyds, nitrocellulose, chlorinated rubber, epoxies, polyesters, cellulose nitrate, melamine-formaldehyde and phenolics.^1,2 When blended with these resins, they often improve gloss, hardness, adhesion, and resistance to heat and light. They also provide improved pigment wetting and, thus, enhance color intensity.

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