DMAc (N,N-Dimethylacetamide, CAS 127-19-5) is widely used in the coatings and resin industry because it can dissolve tough polymers, control viscosity, and support high-temperature processing.
What Is Dimethylacetamide (CAS 127-19-5)?
N,N-dimethylacetamide (DMAc) is an organic compound.
CAS No.:127-19-5,Molecular formula: C4H9NO,Melting point: -20 ℃,Boiling point: 165.1 °C,Relative density(g/mL,25/4ºC): 0.9366 g/cm³.
Solubility: N,N-Dimethylacetamide has good solubility for a variety of organic and inorganic substances. It can be miscible with water, ethers, esters, ketones and aromatic compounds. It can dissolve unsaturated aliphatic hydrocarbons, but hardly dissolve saturated aliphatic hydrocarbons. DMAc solvent can dissolve acrylonitrile copolymers, vinyl resins, cellulose derivatives, styrene resins, linear polyester resins, etc.
What are the uses of DMAc solvent in coatings and resins?
1. High-Performance Coating Solvent
N,N-Dimethylacetamide (DMAc) can be used as a carrier solvent for high-end coatings. It dissolves polyurethane (PU) resins, thus preparing flexible and abrasion-resistant coatings suitable for synthetic leather, textiles, and industrial surfaces. It can also be used in polyimide coatings for electronic and insulating materials, forming smooth, heat-resistant films. DMAc readily dissolves polar polymers. Its high boiling point slows evaporation, resulting in a smoother coating.
2. Resin Dissolution and Processing
DMAc solvent can dissolve and process difficult-to-handle polymer resins. It is suitable for polyurethane (PU), polyacrylonitrile (PAN), some epoxy resins, polysulfones, and engineering plastics. It forms stable and homogeneous resin liquids, ensuring consistent product quality.
3. Film Formation and Surface Coating
It is widely used in protective coatings, barrier coatings, and electronic thin films.
4. Reaction Medium in Resin Synthesis
Dimethylacetamide solvent (DMAc) is used as a reaction solvent in resin production processes. It is used in the synthesis of polyurethanes, polyimides, and specialty resins. DMAc remains stable at high temperatures and mixes well with strong chemical reagents.
5. Viscosity Control and Processing Aids
DMAc solvent can adjust the viscosity of coatings, improving their flowability, wetting properties, and adhesion to various substrates, making the coating process simpler and more stable.
Dimethylacetamide Solvent CAS 127-19-5
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