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Individual
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Individual
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Priority to ES0233657ApriorityCriticalpatent/ES233657A1/en
Publication of ES233657A1publicationCriticalpatent/ES233657A1/en
Treatment And Processing Of Natural Fur Or Leather
(AREA)
Abstract
Manufacturing process of artificial leather, characterized by splitting as a raw material of crushed leather scraps that are ground in 250-kg batches, passing to a series of pure, analyzed, 7,000-liter water tanks for re-establishment and cleaning using as an agent sodium sulphide 1.5% softener (Machine-translation by Google Translate, not legally binding)
ES0233657A1957-02-151957-02-15A manufacturing procedure of artificial leather (Machine-translation by Google Translate, not legally binding)
ExpiredES233657A1
(en)
Procedure for the preparation of 16 alpha, 17alfa-oxido-5alfa- and 5 beta-pregnano-3, 11, 20-triona (Machine-translation by Google Translate, not legally binding)
Improvement in the procedure of manufacturing work footwear with rigid reinforcement pieces (Machine-translation by Google Translate, not legally binding)