Ciba-geigy Corporation

Luzius Schibler

Jurg Merz

Heinz Abel

Rosemarie Toepfl

A process for reinforcing nonwovens by the foaming process accompanied by the use of binding agents and foaming assistants is provided. The nonwovens are treated with preparations which contain at least one binding agent and as foaming agents and a reactive surfactant which is converted into the irreversibly insoluble state at elevated temperature and thereby loses its surface activity. The treated nonwovens are then subjected to a heat treatment, time-consuming washing and rinsing procedures of the treated materials are not necessary.

Process for reinforcing nonwovens

A new process for the manufacture of alkoxylated N-methylol compounds, which comprises reacting A. a N-methylolated organic nitrogen compound with B. an alkylene oxide of the formula ##STR1## wherein R denotes hydrogen, alkyl with 1 to 3 carbon atoms, phenyl or a ##STR2## radical, in the presence of C. AT LEAST ONE METAL ALCOHOLATE OF THE FORMULA

Process for the manufacture of alkoxylated N-methylol ureas

A new process for the manufacture of alkoxylated N-methylol compounds, which comprises reacting

Production of alkoxylated N-methylol compounds

New carbamide-formaldehyde condensation products which possess at least one hydrophilic and at least one hydrophobic radical, characterised in that at least one hydrophobic radical is bonded via a ##EQU1## bridge, wherein A denotes hydrogen or alkyl with 1 to 4 carbon atoms, and at least one hydrophilic radical is bonded via a N-methylol-ether bridge, to a cyclic or acyclic urea radical, these products are particularly useful as reactive surface-active agents.

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Riehen, Switzerland

Luzius Schibler