Some effects on polycondensation reactions

✍ Scribed by Ogata, Naoya

• Book ID: 105340690
• Publisher: Wiley (John Wiley & Sons)
• Year: 2007
• Weight: 520 KB
• Volume: 31
• Category: Article
• ISSN: 0449-2994
• DOI: 10.1002/polc.5070310119

✦ Synopsis

Abstract

The effect of solvents or chelating agents on polycondensation reactions was investigated. Solution polycondensation of nylon 66 salt was enhanced in ketone solvents such as methyl acetophenone or diisobutyl ketone, a polyamide of high molecular weight being formed. Room‐temperature polycondensation of N‐(hydroxyethyl)‐β‐alanine ester or 4‐thio‐e‐aminocaproate was influenced by solvents and chelating agents with functional groups, and the rate or the equilibrium of the reaction were apparently changed. Interfacial polycondensation of m‐phenylenediamine and isophthaloyl chloride yielded aromatic polyamide having a high molecular weight in ketone solvents such as cyclohexanone or methyl acetophenone. It was found that isophthaloyl chloride reacted slowly with cyclohexanone to yield quantitatively isophthalic acid. These effects of solvents or chelating reagents on polycondensation reactions might be attributed to the reactivity change of functional group during polycondensation reactions.