Water-insoluble partly acid-soluble aluminium silicate - used in leather mfr., contains alkali metal and di:- and/or tri:valent cation

Water-insoluble partly acid-soluble aluminium silicate - used in leather mfr., contains alkali metal and di:- and/or tri:valent cation

Water-insol., esp. water-contg. Al silicates, have formula (Cat2/nO)x.Al2O3.(SiO2)y (I) where Cat is an alkali metal ion and/or a di- and/or tri-valent cation; n is 1-3; x is 0.5-1.8; y is 0.8-6 esp. 1.3-4), particle size 0.1 mu to 5 mm and Ca bonding capacity o-20 mg C aO/g anhydrous active substan...

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Bibliographische Detailangaben
Hauptverfasser: SCHUMANN,KLAUS,.DR, SCHWUGER,MILAN-JOHANN,.DR, GERD,.SMOLKA,HEINZ, PLAPPER,JUERGEN,.DR
Format: Patent
Sprache:eng ; ger
Schlagworte:
APPARATUS THEREFOR
CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING,IMPREGNATING, FINISHING
CHEMISTRY
COMPOSITIONS FOR TANNING
HIDES
LEATHER
METALLURGY
PELTS
SKINS
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Beschreibung
Zusammenfassung:Water-insol., esp. water-contg. Al silicates, have formula (Cat2/nO)x.Al2O3.(SiO2)y (I) where Cat is an alkali metal ion and/or a di- and/or tri-valent cation; n is 1-3; x is 0.5-1.8; y is 0.8-6 esp. 1.3-4), particle size 0.1 mu to 5 mm and Ca bonding capacity o-20 mg C aO/g anhydrous active substance. (I) replace water-polluting auxiliaries, e.g. phosphates and solvents, used in degreasing and pre-tanning pickled hides, tanning and after tanning pelts and in neutralising leather.