Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1974-01-04
1976-02-17
Schain, Howard E.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 336R, C08G 1402
Patent
active
039391213
ABSTRACT:
Resins composed of interreacted urea, formaldehyde and a non-tertiary C.sub.4.sub.-6 alkanol in 1:2.3-2.7:1.3-1.8 molar ratio containing 0.3-0.7 mol of methylol substituents per mol of interreacted urea therein having molecular weights in the range 350 - 700 are thermosetting, toluene-soluble, and water-insoluble, and are of pumpable viscosity. They are made by a multi-step process containing two acid alkylation steps with intervening removal of water.
REFERENCES:
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patent: 2322979 (1943-06-01), Siegel
patent: 2326265 (1943-08-01), Tawney
patent: 2377422 (1945-06-01), Hodgins et al.
patent: 2544351 (1951-03-01), Parker
patent: 2600100 (1952-06-01), Evans et al.
patent: 3392150 (1968-07-01), Groll
patent: 3803095 (1974-04-01), Calbo et al.
American Cyanamid Company
Danison, Jr. W. C.
Dunn James T.
Schain Howard E.
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