Novel gelling composition

Details Novel gelling composition Novel gelling composition

1985-12-04

1987-05-05

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

2523151, 260DIG31, 524916, B01J 1300

Patent

active

046630759

ABSTRACT:
Novel gelling agents are prepared by reacting diphenyldiisocyanates with sulfur trioxide in a molar concentration of about 1:2. When the sulfonated diphenyldiisocyanate is added to water in concentrations above 2%, a gel is produced which is stable under acidic conditions at pH levels of about 4 or less.

REFERENCES:
patent: 3898165 (1975-08-01), Ely et al.
patent: 4176118 (1979-11-01), Petinaux
"The Sulfonation of Aromatic Isocyanates: Sylfonated p-Tolyl Isocyanate-An X-Ray Structure Analysis", Gerhard Balle et al., Angew Chem. Int. Ed. Engl. 21, No. 11 (1982), pp. 867-888.

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