Metal treatment – Compositions – Heat treating
Patent
1982-04-05
1983-04-26
O'Keefe, Veronica
Metal treatment
Compositions
Heat treating
148 206, 148 28, 568 46, 568614, 568616, 568618, 568623, 568624, C21D 156
Patent
active
043812058
ABSTRACT:
A process of quenching metal using as the quenching medium an aqueous solution containing from about 0.5% to 50% by weight of a liquid, water-soluble, capped polyether polyol obtained by reacting ethylene oxide and at least one lower alkylene oxide having 3 to 4 carbon atoms, e.g. propylene oxide, with an active hydrogen compound, such as a lower glycol, to prepare a heteric or block copolymer, and further reacting the copolymer with an alpha olefin oxide, the polyol having a molecular weight of from about 7000 to 15,000.
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E. F. Houghton & Company
O'Keefe Veronica
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