Description
Spécification du:
Diacetone Acrylamide(DAAM) is a functional acrylic monomer with the molecular formula C₉H₁₅NO₂.Its Structure CH₂=CH–CO–NH–C(CH₃)₂–CH₂–CO–CH₃,The molecule contains two key reactive functionalities:
>A vinyl/acrylamide group (CH₂=CH–CO–NH–), which allows it to copolymerize with other acrylic/vinyl monomers via free-radical polymerization.
>A ketone group (a diacetone-derived side chain), which remains available for further chemical reaction after polymerization.
| Éléments | Spécification du | Résultat |
| Apparence | Flocon jaune clair ou blanc solide ou en poudre | Flocon blanc solide |
| Eau | 0,3 % | 0.042% |
| Point de fusion | 55-57℃ | 55.6-56.3℃ |
| Acrylamide | ≤ 0,1 % | 0.013% |
| Inhibiteur | ≤100 ppm | 76ppm |
| Pureté | ≥99.0 % | 99.8% |
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Package of Diacetone Acrylamide cas 2873-97-4:
Application of Diacetone Acrylamide Cas 2873-97-4:
1.Self-crosslinking latex polymers / emulsion coatings (main use)
This is Diacetone Acrylamide’s dominant industrial application:
>DAAM is copolymerized into acrylic or vinyl-acrylic emulsion polymers (latexes) used in paints, Revêtements, adhesives, and textile treatments.
>The ketone group on the DAAM units doesn’t react during the initial polymerization — instead, it’s designed to react later, after the coating/film is applied, with a co-formulated crosslinker (typically a dihydrazide compound, such as adipic acid dihydrazide) through a ketone-hydrazide condensation reaction.
>This creates a room-temperature, ambient self-crosslinking system: the polymer stays as a stable, uncrosslinked liquid latex in the can, but once applied as a film and as water evaporates, the ketone and hydrazide groups react to form crosslinks, dramatically improving the film’s water resistance, chemical resistance, hardness, and durability,without needing external heat curing.
2.Architectural and industrial coatings/paints
Widely used in exterior latex paints, where the self-crosslinking mechanism improves weatherability, block resistance (preventing painted surfaces from sticking together), scrub resistance, and overall film durability compared to non-crosslinked latex paints.
3.Adhesives
Used in pressure-sensitive and other latex-based adhesive formulations to improve cohesive strength, water resistance,and heat resistance of the cured adhesive film.
4.Textile and nonwoven treatments
Incorporated into binder formulations for textile coatings and nonwoven fabric treatments, where the self-crosslinking behavior improves wash durability, wet strength, and overall performance of the treated fabric.
5.Leather finishing
Used in some leather coating/finishing formulations for similar durability and crosslinking benefits.
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Practical formulation note: Diacetone Acrylamide’s key value proposition is enabling ambient (room-temperature) crosslinking in water-based polymer systems,a major advantage over polymers that require heat-activated crosslinkers, since many end-use applications (like house paint applied outdoors) can’t rely on external heat curing. It’s typically used at relatively low levels (often around 2–5% of the total monomer mix) alongside common acrylic monomers like butyl acrylate, methyl methacrylate, or styrene in the base polymer backbone.
