| http://www.w3.org/ns/prov#value | - Among the suitable diand polynuclear phenols suitable for preparation of useful polyglycidyl ethers in my invention are the bisphenols described by Bender et al. in U.S. Patent No. 2,506,486 and polyphenols such as the novolac condensation product of a phenol and a saturated or unsaturated aldehyde containing on an average of 'from 3 to 20 or more phenylol groups per molecule (cf. book by T. S. Ca
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