N-Butyl Methacrylate (nBMA) is an important acrylate monomer with excellent polymerization properties and a wide range of industrial applications.
1. Basic properties and structure
- Chemical formula: C₈H₁₄O₂
- Molecular weight: 142.20 g/mol
- Appearance: Colorless transparent liquid with a slight ester odor.
- Physical properties:
- Boiling point: 162-165℃
- Flash point: 41℃ (closed cup)
- Density: 0.894 g/mL (25℃)
- Solubility: Insoluble in water, easily soluble in organic solvents such as alcohols, ethers, and ketones.
- Chemical properties: The molecule contains double bonds and ester groups, which can undergo radical polymerization, copolymerization and cross-linking reactions, and are often used to prepare acrylic resins.
2. Core application areas
1. Paints and inks
- Solvent-based coating: As a soft monomer, it is copolymerized with methyl methacrylate (MMA), to adjust the flexibility and adhesion of the resin, and is widely used in automotive topcoats and coil coatings.
- Water-based coatings: Prepare acrylic emulsions for construction latex paints, giving coating weather resistance and stain resistance.
- Ink: Improves the gloss and wear resistance of ink, suitable for packaging and printing.
2. Adhesive
- Pressure-sensitive adhesive: Copolymerized with ethyl acrylate and vinyl acetate to produce tape and label adhesive, which has both high viscosity and peel strength.
- Structural adhesive: used for bonding of metal and plastics, such as assembly of automotive parts.
3. Plastics and composite materials
- Modifier: Blend with ABS and PVC to improve the impact resistance and processing properties of the material.
- Optical materials: Copolymerize with MMA to prepare high-light transmittance plexiglass (PMMA) for optical lenses and display screens.
4. Textile and Leather
- Finisher: Improves the softness, wrinkle resistance and water resistance of the fabric.
- Leather finish: Enhances the wear resistance and gloss of leather.
5. Other fields
- Paper treatment: As a glue sizing agent, it improves the water resistance and strength of the paper.
- Oilfield chemicals: used for drilling fluid additives to improve mud performance.
