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

1975-05-12

1977-03-01

Tillman, Murray

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 515, 260 70R, 260840, 260849, C08L 6124, C08L 6134

Patent

active

040101320

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: 3553115 (1971-01-01), Curchod et al.
Renner, Die Makromolekulare Chemie, 149 (1971), 1-27.

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