Process for the manufacture of urea-formaldehyde...

Details Process for the manufacture of urea-formaldehyde... Process for the manufacture of urea-formaldehyde...

Category

C - Chemistry, Metallurgy

Subcategory

08

Subsubcategory

L

CPC

18/503, 400/5417

IPC codes

C08L 61/34 (2006.01) C08G 16/02 (2006.01) C08J 3/12 (2006.01)

Type

Patent

Patent number

CA 1062391

Description

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 condensa- tion 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 inter- particle porosity. They can be used as fillers, as adsorbents, as carriers and as thickeners.

Application Number

227182

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