C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
260/465.4
C11D 1/00 (2006.01) A62D 1/02 (2006.01)
Patent
CA 1112661
ABSTRACT OF THE DISCLOSURE Fluorine-containing alkyl-sulfato-betaines of the formula Image in which Rf is perfluoroalkyl with 3 to 16 C atoms, R1 is alkyl with 1 to 4 C atoms, R2 is alkyl with 1 to 4 C atoms, Q is -CH2-CH2- or Image , m is numbers 0 or 1 and, if m is 0, p is an integer from 1 to 4 and, if m is 1, p is the number 1, are prepared by reacting a compound of the formula Image in which Rf, Q, m and p are as defined above, with at least one known sulfating agent at -30 to +60°C in the presence of at least one solvent (a) which dissolves the above-mentioned amine and does not react with the sulfating agent, dissolving the resulting product, after removing the solvent (a), in at least one polar solvent (b), neutralizing the solution with at least one known alkali and then reacting the neutral solution at 40 to 130°C and under a pressure of about 1 to about 6 bars with a compound of the formula R2Z, in which Z is C1, Br, I or -OSO2OR2 and R2 is as defined above. The compounds are useful in the manufacture of polytetrafluoroethylene dispersions, as flow control agents for waxes, as cleaning assistants in dry cleaning and as components in fire-extinguishing compositions.
315842
Billenstein Siegfried
Ehrl Winfried
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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