Multifunctional diol carrying both hydroxyl and carboxylic acid groups, used as a hydrophilic monomer and internal emulsifier for waterborne polyurethane dispersions. Builds ionic groups into the polyurethane backbone, giving water dispersibility and stability once neutralized.
Product Code
DMPA
2,2-Dimethylolpropionic Acid (DMPA)
CAS Number
4767-03-7
EINECS
225-306-3
Description
Synonyms
Key applications
- Internal emulsifier for waterborne polyurethane dispersions (PUD/WPU)
- Waterborne coatings and adhesives
- Leather finishes and textile coatings
Characteristics
| Molecular formula | C5H10O4 |
|---|---|
| Molecular weight | 134.13 |
| Purity | ≥ 99% |
| Hydroxyl content | ≥ 24% (% OH by weight) |
| Acid value | 410-425 mgKOH/g |
| Melting point | 178-185°C |
| Ash | ≤ 0.02% |
| Water | ≤ 0.3% |
| Appearance | Odorless, free-flowing white crystalline solid |