| http://www.w3.org/ns/prov#value | - Youngstown Sheet and Tube Company (Youngstown, OH)International Classification: F16L 912, F16L 914U.S. Classification: 138140Abstract: A flexible crack-resistant and chemically resistant thermosetting vinyl ester resin is produced by co-reacting an epoxy resin, a carboxyl terminated elastomer and an unsaturated monocarboxylic acid, such as acrylic or methacrylic acid.
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