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AAEMA (Acetoacetoxyethyl Methacrylate)
AAEMA (acetoacetoxyethyl methacrylate) is an acrylic monomer commonly used as a copolymer in coatings and adhesive applications.
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- Manufacturer: Arxada
- Product Line: Arxada Diketene Derivatives
- Product: AAEMA (Acetoacetoxyethyl Methacrylate)
- Industries: Coatings
- Authorized Countries: Canada | United States
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Overview
AAEMA, also known as 2-(acetoacetoxy)ethyl methacrylate or AAEM, from Arxada (formerly Lonza), is an acetoacetate acrylic monomer typically used to produce acrylic resins for various coatings and adhesive applications. Acetoacetates have excellent cross-linking versatility and lower the resin glass transition temperature, decrease solution viscosity for higher-solids coatings, and improve adhesion for metal coatings. AAEMA has excellent hydrolytic stability and weatherability, low viscosity, and low water absorption. It promotes adhesion to various substrates, including metal, mineral, and wood surfaces. AAEMA can also replace styrene in the production of unsaturated polyesters and is used as a chemical intermediate in numerous applications.
Specifications
Color: Colorless to yellowish
Assay (GC): >95.0% area
2-Hydroxyethyl methacrylate (GC), % area: <2.5
Water (KF), % w/w: <0.10
Transparence (440 nm, 10 mm), %: >85.0
Transparence (440 nm, 50 mm), %: >70.0
Acid value (titr.), mg KOH/g: 3.0–8.0
Color (Gardner): <1.0
CAS number: 21282-97-3
Molecular formula: C10H14O5
Primary Chemistry: 2-(Acetoacetoxy)ethyl methacrylate
Features & Benefits
Solubility in water and organic solvents
Hydrolytic stability
Good weatherability
Promotes adhesion in metal coatings
Lowers polymer Tg
Decreases viscosity for high-solids, low-VOC coatings
Reactive methylene group and ketone carbonyl groups can be reacted via cross-linking for polymer modification
Low color
Problems Solved
Acrylic resin manufacturers solve for various issues, depending on the end application. These include high-color or yellowing polyester resin, which negatively impacts color-sensitive coating applications, such as gel coats. Monomers that raise the glass transition temperature or solution viscosity can be undesirable in certain applications, including low-VOC or high-solids coatings. Resins can also suffer from poor performance characteristics without the use of proper chemicals, such as poor water stability, weatherability, or adhesion properties.
Applications
Polymers
Adhesives
Industrial coatings
Architectural coatings
Gel coats
Colorants
Related Applications
Related Chemistries
Coatings
Related Functions
Coatings
Arxada Diketene Derivatives Articles
Arxada AAEMA for Acrylic Resins
Learn why AAEMA is widely used as an acrylic monomer for making resins for paints and coatings applications.
Arxada Copromoters for Gel Coats
Arxada Diketene Derivatives offer several advantages to the composites industry as copromoters in the production of unsaturated polyesters resins for gel coats.
Arxada - Optimizing Resins for Low VOC
AAEMA offers unique benefits to resins, including lowering the solution viscosity of resins used in the production of low-VOC coatings. Learn more.
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