Storage-stable butylated urea-formaldehyde cross-linking agent a

Details Storage-stable butylated urea-formaldehyde cross-linking agent a Storage-stable butylated urea-formaldehyde cross-linking agent a

1975-03-25

1976-05-18

Tillman, Murray

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 336R, C08G 1402

Patent

active

039577317

ABSTRACT:
Urea-formaldehyde-butanol condensation products are storage-stable and substantially non-self-condensing at room temperature when they have a weight average molecular weight less than 1,000 and consist essentially of urea units carrying on the average 0.2 to 0.6 aldehyde reactive H atoms, 0.6 to 1.0 formaldehyde bridge, 1.2 to 1.8 C.sub.4 H.sub.9 OCH.sub.3 -- substituent and 0 to 0.2 --CH.sub.2 OH substituent per urea unit therein. They are made by reacting urea with 2.5 to 3 mols of CH.sub.2 O in aqueous alkaline solution, and then reacting the product with 1.2 to 1.8 mols of butanol in the presence of an acid etherification catalyst with simultaneous vacuum distillation of water.

REFERENCES:
patent: 2326265 (1943-08-01), Tawney
patent: 2544351 (1951-03-01), Parker
patent: 2600100 (1952-06-01), Evans et al.
patent: 3392150 (1968-07-01), Groll

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