Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
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Features & Benefits
- CASE Ingredients Features
- Product Highlights
CURAMINE amido-amines are condensation products of mono-functional carboxylic acids with amines. This reaction technique and use of almost equivalent ratios of carboxylic acid to the selected amine containing species results in a low residual “free amine” content and as a result this class of curing agent has low volatility and a relatively low hazard rating.
Standard amido-amines have relatively low molecular weight and are subsequently low in viscosity. Selected process techniques can enable specific imidazoline levels to be obtained resulting in a small range of grades that have a very similar basic composition [ and resultant cured performance ] but vary with regard to their compatibility with epoxy resins and their rate of cure. [ Increasing imidazoline content improves compatibility with epoxy resins and extends the cure time. ]
Amido-amines have non-critical mix ratios and the use of levels slightly above and below the stoichiometric amount can enable the formulation of systems with varying degrees of hardness.
Amido-amines offer good adhesion to a variety of substrates making them highly suitable for use in adhesives. They find extensive use in the formulation of systems for bonding onto damp concrete and concrete coating. They have excellent wetting characteristics and high imidazoline grades are reverted [ imidazoline ring opened ] back to the amido-amine pre-cursor in the presence of substrate surface humidity.
CURAMINE amido-amines are generally darker in color than many of the other curing agent types offered. Apart from the variable reactivity offered from within the range and the subsequent ability to formulate systems of varying pot-life and cure rate, these products offer a high degree of corrosion protection. Standard amido-amines are utilized in ambient cure applications and perform well when applied in humid areas. They should not be applied at temperatures below 10℃ as this will lead to poor cure and a resultant “greasy” surface.
Applications & Uses
- Applications
- Compatible Polymers & Resins