High-Purity Solvents, Polyurethane (PU) and Resin

Diacetone Acrylamide (DAAM)

Diacetone Acrylamide (DAAM), identified by CAS number 2873-97-4, is a versatile functional monomer characterized by its unique molecular structure, which contains both a reactive vinyl group and a pendant ketone group. This dual functionality makes it a critical component in the synthesis of high-performance polymers, particularly in waterborne systems. DAAM is most recognized for its role in “keto-hydrazide” crosslinking technology. When incorporated into a polymer backbone, the diacetone group remains dormant until it reacts with a crosslinking agent—typically Adipic Acid Dihydrazide (ADH)—upon the evaporation of water. This mechanism allows for the formulation of stable, one-package (1K) aqueous systems that achieve the performance of two-component (2K) systems without the associated complexity. DAAM-modified resins exhibit significant improvements in mechanical strength, chemical resistance, and substrate adhesion. As the industry shifts toward low-VOC (Volatile Organic Compound) and environmentally friendly solutions, DAAM has become an essential building block for advanced coatings, adhesives, and textile treatments.

Attributes

Key Features and Benefits

Self-Crosslinking Capability: Enables room-temperature curing when paired with dihydrazides, facilitating high-performance films without external heating.
Excellent 1K Stability: Provides a long shelf-life in liquid aqueous formulations, as crosslinking only initiates during the drying phase.
Enhanced Physical Properties: Significantly boosts the hardness, scrub resistance, and tensile strength of the resulting polymer film.
Superior Solvent Resistance: Creates a dense molecular network that protects surfaces from water, alcohols, and household chemicals.
Broad Compatibility: Readily copolymerizes with a wide range of monomers, including acrylates, methacrylates, styrene, and vinyl acetate.
Improved Adhesion: Enhances the bonding affinity of coatings to challenging substrates such as glass, treated plastics, and metals.

Specifications

Technical Highlights

Chemical Identity: N-(1,1-Dimethyl-3-oxobutyl)acrylamide; Molecular Formula: C₉H₁₅NO₂.
Molecular Weight: 169.22 g/mol.
Physical Form: White to off-white crystalline flakes or powder with high purity (typically ≥ 99%).
Solubility Profile: Highly soluble in water, methanol, ethanol, acetone, and various other organic solvents, allowing for versatile processing.
Reactive Sites: Features a terminal double bond for radical polymerization and a specific keto group (C=O) for post-polymerization crosslinking.
Thermal Characteristics: Melting point range of 54°C to 58°C; stable under recommended storage conditions when inhibited (usually with MEHQ).
Low Toxicity: Generally considered a safer alternative to other crosslinking monomers like acrylamide or formaldehyde-releasing agents.

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

Waterborne Wood Coatings: Used in premium floor and furniture varnishes to provide rapid development of hardness and chemical resistance.
Architectural Paints: Incorporated into exterior and interior paints to improve washability, durability, and dirt pick-up resistance.
High-Performance Adhesives: Utilized in pressure-sensitive adhesives (PSAs) and laminating adhesives to increase shear strength and heat resistance.
Textile Auxiliaries: Employed in fabric binders and finishes to enhance wash fastness, hand-feel, and mechanical durability.
Paper Processing: Used in specialty paper coatings and sizes to improve surface strength and water repellency.
Photopolymers: Serves as a component in the manufacture of photosensitive resins and printing plates for the electronics and graphics industries.