Further work is undergoing to investigate the effectiveness of this technique in other Knoevenagel Condensation Reactions
The condensation reaction
of silanols or hydroxyl groups of PVA more proceeds with increasing annealing time.
This result can be attributed to increase in the rate of condensation reactions
with increase in the concentration of NaHP catalyst (Park, et al.
A synthesis of copolymer from acetylated melamine, N, N' Dimethylthiourea and adjoining them with binder (Silicic acid) is fundamentally a new concept based on condensation reactions
Salon, MCB, Bayle, PA, Abdelmouleh, M, Boufi, S, Belacem, MN, "Kinetics of Hydrolysis and Self Condensation Reactions
of Silanes by NMR Spectroscopy.
In case of Condensation reaction
of aniline with Formic acid, besides achieving similar yield and selectivity, no auxiliary solvent was used as entrainer for water removal & hence this process is more efficient both in terms of energy and throughput.
Figure 4 illustrates the growth of low-molecular-weight amide-acid oligomers through the condensation reactions
between NE and MDA and between MDA and BTDE with formation of water and methanol.
This fact may be attributed to the induced condensation reaction
between the carboxyl end group of the aminoacid and the--OH groups of the formaldehyde in aqueous acidic solution, thus acting like an anchoring point between the layers and the resin, as previously reported (34).
According to Steve Brunner, technical director, Heresite Protective Coatings, D 7245 allows for taking cure water (the water resulting from heat induced condensation reaction
of coatings) into account as part of the total water measured, rather than treating it as a volatile organic compound.
Sodium pyruvate in the presence of p-dimethylaminobenzaldehyde (P-DMAB) solution and potassium hydroxide forms a bright yellowish solution due to the typical aldol condensation reaction
given in Scheme 1.
The mechanism of UF curing begins with the addition of acid or acidic salt, which can be released during hot-pressing to decrease pH and accelerate the condensation reaction
This material shown in figure 5 also contains a secondary antioxidant synergist which is coproduced during the condensation reaction