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One- and two-dimensional NMR study of resol phenol—formaldehyde prepolymer resins

✍ Scribed by Thomas H. Fisher; Ping Chao; Cindy G. Upton; Anthony J. Day

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
651 KB
Volume
33
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

A one‐ and two‐dimensional NMR study was performed on three commercial resol phenol—formaldehyde (PF) prepolymer resins. ^1^H, ^13^C, CSCM and DQF COSY NMR spectral data, in acetone‐d~6~, were obtained on each resin and on PF model compounds: phenol, five methylolphenols, four diphenylmethanes, two formals, two dibenzyl ethers and two dibenzylamines. Gated‐decoupled ^13^C experiments, using 2,4,6‐trimethylphenol as internal standard, were used to quantitate the major components present in each of the three resins. The major chemical differences of the three resins were noted. A DQF COSY method was developed that allowed the qualitative identification of most of the major phenolic components present in each of the PF resins.

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