Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1975-08-29
1978-01-10
Woodberry, Edward M.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 49, 260 59R, 260 47EP, 260 47EQ, 260 676R, 260 69R, 260 75R, 260 75T, C08G 810
Patent
active
040678547
ABSTRACT:
In a process for reacting two or more reactants, such as phenol and formaldehyde in the manufacture of phenol/formaldehyde resins, the reaction by-products are treated with an adsorbant resin to remove excess reactant therefrom and the reactant so adsorbed is removed from the adsorbent by elution with the other reactant, the eluate being recycled to the reaction.
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patent: 2911363 (1959-11-01), Kissling
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patent: 3663467 (1972-05-01), Albright
patent: 3736292 (1973-05-01), Thayer et al.
patent: 3937686 (1976-02-01), Augstkalus
Chem. Absts., 76 (1972) 101646q, "Fixed-Bed Sorption with Recycle", Cooney et al.
Chem. Abstrs., 79 (1973) 128981u, "Isolation of Phenols from Water", Vinson et al.
Chem. Absts. 76 (1972) 76262b, "Use of Adsorbents for the Purification of Waste Water", Karelin et al.
Chem. Absts., 66 (1967) 40567j, "Purification-Waste Water-Phenol-Ion Exchangers", Krasnov et al.
Rohm and Haas Company
Woodberry Edward M.
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