• Source: Trimethylolpropane

Trimethylolpropane (TMP) is the organic compound with the formula CH3CH2C(CH2OH)3. This colourless to white solid with a faint odor is a triol. Containing three hydroxy functional groups, TMP is a widely used building block in the polymer industry.




Production


TMP is produced via a two step process, starting with the condensation of butanal with formaldehyde:

CH3CH2CH2CHO + 2 CH2O → CH3CH2C(CH2OH)2CHO
The second step entails a Cannizaro reaction:

CH3CH2C(CH2OH)2CHO + CH2O + NaOH → CH3CH2C(CH2OH)3 + NaO2CH
Approximately 200,000,000 kg are produced annually in this way.




Applications


TMP is mainly consumed as a precursor to alkyd resins. Otherwise, acrylated and alkoxylated TMP's are used as multifunctional monomers to produce various coatings, Ethoxylated and propoxylated TMP, derived condensation of from TMP and the epoxides, are used for production of flexible polyurethanes. Allyl ether derivatives of TMP, with the formula CH3CH2C(CH2OCH2CH=CH2)3-x(CH2OH)x are precursors to high-gloss coatings and ion exchange resins. The oxetane "TMPO" is a photoinduceable polymerisation initiator. It is may also be reacted with epichlorohydrin to produce the triglycidyl ether.




See also


Pentaerythritol
Neopentyl glycol
Trimethylolethane




References

Kata Kunci Pencarian:

• Trimethylolpropane
• Trimethylolpropane triacrylate
• Trimethylolpropane ethoxylate
• Trimethylolpropane triglycidyl ether
• Trimethylolpropane phosphite
• Acrylate
• TMP
• Butyraldehyde
• Polyol
• Polyurethane