MODIFIED ANILINE-FORMALDEHYDE OLIGOMER

Abstract

The article provides information on the synthesis of modified multifunctional aniline-formaldehyde oligomers, as well as research results on their modification with various substances and characteristics. Aniline-formaldehyde oligomers are obtained from aniline and formaldehyde, mainly in the presence of an acid catalyst. These modified oligomers possess improved mechanical, thermal, and chemical properties and can be used in applications such as metal-coated laminates, electronic materials components, adhesives, etc. These oligomers exhibit good inhibitor properties. The progress of reactions such as tar-forming reactions and the condensation reactions of aniline and formaldehyde depends heavily on the reaction stoichiometry, pH, and experimental conditions such as temperature. Furthermore, the condensation reactions of aniline and formaldehyde can be classified firstly as reactions producing high molecular weight tar in the presence of acid catalysts and secondly as reactions producing lower molecular weight bases in the absence of acid catalysts. The structures, properties, and application areas of obtained tars vary depending on initial raw materials and the method of acquisition.