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Expired
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GB74/22A
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Individual
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Individual
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Publication of GB189737ApublicationCriticalpatent/GB189737A/en
C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
C14C3/00—Tanning; Compositions for tanning
C14C3/02—Chemical tanning
C14C3/08—Chemical tanning by organic agents
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Chemical & Material Sciences
(AREA)
Chemical Kinetics & Catalysis
(AREA)
General Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
Treatment And Processing Of Natural Fur Or Leather
(AREA)
Abstract
Ammonium tannate is prepared by adding ammonia to concentrated solutions of tanning extracts, and may be decomposed by heating the solution, preferably under reduced pressure, or by treatment with carbon dioxide.
GB74/22A1921-11-301922-01-03An improved process of tanning
ExpiredGB189737A
(en)