Methacrylic Acid
CAS Number: 79-41-4
Methacrylic acid (MAA) is an alpha-methyl substituted acrylic monomer offering improved thermal stability and glass transition compared to acrylic acid. It is widely used as a functional co-monomer in emulsion polymers, ion-exchange resins, and adhesive formulations to introduce acid groups for crosslinking and adhesion enhancement.
Technical Specifications
| appearance | Colorless transparent liquid |
| purity (%) | ≥99.0 |
| color (Pt-Co) | ≤10 |
| water content (%) | ≤0.1 |
| inhibitor (MEHQ, ppm) | 250 ± 50 |
Applications
- Emulsion polymer stabilization and rheology control
- Cationic and anionic ion-exchange resin synthesis
- Pressure-sensitive and structural adhesive formulations
- Dental and biomedical polymer applications
- Coatings for improved adhesion to metal and glass substrates
Key Features
- Alpha-methyl group raises polymer Tg for better hardness and heat resistance
- Provides acid functionality for crosslinking with epoxy or azetidinium groups
- Improves mechanical performance and chemical resistance in copolymers
- Compatible with MMA, BA, and most acrylic/vinyl co-monomers
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CAS Number
79-41-4
Category
Polymer Synthesis ChemicalsAvailability
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