N-Vinylpyrrolidone
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| Density | 1.04 g/cm3[1] |
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| Vapor pressure | 0.1 mmHg (24 °C)[1] |
| Template:Longitem | 1.512[1] |
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N-Vinylpyrrolidone (NVP) is an organic compound consisting of a 5-membered lactam ring linked to a (2 carbon) vinyl group. It is a colorless liquid although commercial samples can appear yellowish.
It is produced industrially by vinylation of 2-pyrrolidone, i.e. the base-catalyzed reaction with acetylene.[2] It is the precursor to polyvinylpyrrolidone (PVP), an important synthetic material. The NVP monomer is commonly used as a reactive diluent in ultraviolet and electron-beam curable polymers applied as inks, coatings or adhesives.[2]
Synthesis
Starting from γ-Butyrolactone, 2-pyrrolidone is synthesized by treatment with ammonia.[3] Subsequently, acetylene is used to introduce the vinyl group.[2][4]
See also
- Methylpyrrolidone (NMP)
- 2-Pyrrolidone (2-Py)