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DMAA 80 (N,N-Dimethylacetoacetamide)
DMAA 80 is a copromotor used in the production and modification of unsaturated polyester resins for coatings and adhesive applications.
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- Manufacturer: Arxada
- Product Line: Arxada Diketene Derivatives
- Product: DMAA 80 (N,N-Dimethylacetoacetamide)
- Industries: Agriculture | Coatings
- Authorized Countries: Canada | United States
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Overview
DMAA 80 is an 80% solution of N,N-dimethylacetoacetamide compound dissolved in water. DMAA 80 is the most widely used copromoter in unsaturated polyester resin formulations. It is most effectively used in resin formulations with glycols such as PG, NPG, or TMPD. Acetoacetates are widely used in polyester resin polymerization because of their ability to lower the polymer glass transition temperature (Tg) and solution viscosity, as well as cross-link with other polymers via multiple reaction pathways. DMAA 80 also accelerates the cure time of polyester resins without compromising the properties of the final product. Its low color makes it ideally suited for polymerizing resins for gel coats and other color-sensitive coating applications. DMAA 80 can also be used as a chemical intermediate in various industries.
Specifications
Appearance: Liquid
Color: Colorless to yellow, <350 (APHA)
Assay (calculated), %: 79.0–83.0
Total impurity (area) (GC), %: <1.0
Amine, free (titr.), % w/w: <0.05
Molecular formula: C6H11NO2
CAS number: 2044-64-6
Primary Chemistry: N,N-Dimethylacetoacetamide
Features & Benefits
Solution of 80% DMAA in water
Most widely used copromoter
Low color
Lowers polymer Tg
Lowers resin viscosity
Quickens cure time of polyester resin
Problems Solved
Certain polyester resins, particularly ones used in gel coat applications, are sensitive to color and cannot use copromoters or other intermediates that cause the resin to yellow. Resin manufacturers must also be wary of copromoters that negatively impact the final resin properties, such as raising the glass transition temperature or increasing solution viscosity. Cure time can also be a critical component, as long cure times can cause delays and production inefficiencies.
Applications
Polymers
Industrial coatings
Architectural coatings
Gel coats
Agrichemicals
Related Applications
Related Chemistries
Coatings
Related Functions
Coatings
Arxada Diketene Derivatives Articles
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.
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