Butyl Acrylate
CAS Number: 141-32-2
n-Butyl acrylate (n-BA) is the most widely used soft acrylic monomer, providing flexibility, low Tg (approximately -54°C), and tackiness to copolymer systems. It is essential in waterborne emulsion polymers for architectural coatings, pressure-sensitive adhesives, and textile binders. The balance of reactivity, low Tg contribution, and cost-effectiveness makes it an industry standard.
Technical Specifications
| appearance | Colorless transparent liquid |
| purity (%) | ≥99.5 |
| water content (%) | ≤0.05 |
| acidity (as AA, %) | ≤0.005 |
| inhibitor (MEHQ, ppm) | 15 ± 5 |
Applications
- Waterborne architectural and decorative coatings
- Pressure-sensitive adhesive (PSA) tapes and labels
- Textile and nonwoven binder emulsions
- Paper coating and saturation binders
- Acrylic sealants and caulking formulations
Key Features
- Low Tg of approximately -54°C delivers excellent low-temperature film flexibility
- High reactivity ratio compatible with MMA, styrene, vinyl acetate, and functional monomers
- Key soft segment for formulating Tg-balanced emulsion copolymers
- Consistent quality with controlled inhibitor ensures reproducible emulsion polymerization
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CAS Number
141-32-2
Category
Polymer Synthesis ChemicalsAvailability
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