Harness for working animal
Patent
1978-03-13
1979-01-09
Jiles, Henry R.
Harness for working animal
542464, 542466, 2603322A, 2603323H, 26034622, 26034671, C07D30779, C07D30782
Patent
active
041339533
ABSTRACT:
Process for the preparation of sulfonated bis-[benzofuranyl-(2)] compounds by treating the corresponding unsulfonated bis-[benzofuranyl-(3)] compounds with sulfuric acid having a content of from 90 to 100% and isolating the mono- and polysulfonic acids formed as such or after conversion into their salts.
REFERENCES:
patent: 3859350 (1975-01-01), Sahm et al.
Kost et al., J. Org. Chem. USSR, 6(7), 1516-1517 (1970).
Dentz Bernard
Hoechst Aktiengesellschaft
Jiles Henry R.
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