BISULFITE-BLOCKED POLYISOCYANATES AS TANNING AGENTS

A reaction prod., contg. carbamoylsulphonate gps., from (A) an organic polyisocyanate, (B) a polyether alcohol with 40-100 mols.% of polyethylene oxide units in a sequence length of 5-70, in amt. of 0.01-0.4 equivs. (as OH gps.) w.r.t. 1 NCO gp., opt. (C) other components reactive with NCO gps., and...

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Bibliographische Detailangaben
Hauptverfasser:	HARO TOROIBERU, HERUMUUTO RAIFU
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS THEREFOR CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING,IMPREGNATING, FINISHING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS FOR TANNING HIDES LEATHER MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PELTS SKINS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	A reaction prod., contg. carbamoylsulphonate gps., from (A) an organic polyisocyanate, (B) a polyether alcohol with 40-100 mols.% of polyethylene oxide units in a sequence length of 5-70, in amt. of 0.01-0.4 equivs. (as OH gps.) w.r.t. 1 NCO gp., opt. (C) other components reactive with NCO gps., and (D) NH4 or alkali (bi)sulphites, is used as a tanning agent.