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The formation of stable free radicals in the hardening and thermal degradation of phenol-formaldehyde resins

✍ Scribed by L.A. Igonin; Yu.A. Yeliseyev; O.A. Dyurgerov; N.A. Krasulina


Book ID
118355321
Publisher
Elsevier Science
Year
1962
Weight
257 KB
Volume
3
Category
Article
ISSN
0032-3950

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## Abstract The problem of overly high contents of remnant monomers (free phenol and free formaldehyde) in phenolic foam was studied. Free phenol was characterized by iodimetry, and free formaldehyde was characterized by a hydroxylamine hydrochloride method. The effect of the phenol/formaldehyde mo