Process for the manufacture of urea-formaldehyde condensation po

Details Process for the manufacture of urea-formaldehyde condensation po Process for the manufacture of urea-formaldehyde condensation po

1976-09-10

1977-12-20

Anderson, Harold D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 294R, 260 38, 260 39R, 260 515, 260 57R, 260 70R, 260 70M, 260840, 260849, C08L 6134, C08G 1408

Patent

active

040640884

ABSTRACT:
The invention relates to the manufacture of urea-formaldehyde condensation polymers containing sulpho groups. The starting material is a urea-formaldehyde precondensate, and a condensation polymer of naphthalenesulphonic acid and formaldehyde is used as the acid catalyst for the subsequent polycondensation of the urea-formaldehyde precondensate. The peculiarity of this polycondensation is that the condensation catalyst is incorporated into the polymer structure of the UF polymer.
The products obtained according to the invention are distinguished by improved surface affinity coupled with interparticle porosity. They can be used as fillers, as adsorbents, as carriers and as thickeners.

REFERENCES:
patent: 2944046 (1960-07-01), Sellet
patent: 3553115 (1971-01-01), Curchod et al.
Renner, Die Makromolekulare Chemie, 149, (1971).
Billmeyer, Textbook of Polymer Science, Interscience Publishers, N.Y. (1962), pp. 326-330.

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