STUDY OF COMPOSITION OF PHENOL-FORMALDEHYDE OLIGOMERS BY NEPHELOMETRIC METHOD

SH. Ergashev; A. Gʻoyipov; M. Alimuxamedov

doi:10.5281/zenodo.7070512

STUDY OF COMPOSITION OF PHENOL-FORMALDEHYDE OLIGOMERS BY NEPHELOMETRIC METHOD

12.09.2022 International Scientific Journal "Science and Innovation". Series A. Volume 1 Issue 5

SH. Ergashev , A. Gʻoyipov , M. Alimuxamedov

Abstract. Currently, phenol-formaldehyde oligomers cross-composite with various thermoplastic oligomers and monomers are well used in many fields, including: as binders in obtaining composite materials, as coating formers, in the production of plastic products and in other fields. is bearing fruit. In this case, the best way to confirm that the obtained oligomers are sooligomers is to study them by nephelometric titration.

Keywords: high molecular weight phenol-formaldehyde oligomers; phenol alcohol; thermoplastic polyester-polyol; solubility of oligomers; selection of suitable solvents; selection of suitable precipitators; nephelometric titration of oligomers; optical density indicators; polydispersity.

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