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Etilo S L
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Etilo S L
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Priority to ES232989ApriorityCriticalpatent/ES232989A1/en
Publication of ES232989A1publicationCriticalpatent/ES232989A1/en
Process for the manufacture of foaming agents characterized by the fact that the raw materials (which may be collagen, protein or keratin) are subjected to the previous treatment, subjecting them to the action of sulfur dioxide, and then being treated with alkaline earth hydroxides, activated proceeding, then, to heat the assembly in a sealed container and with agitation, under temperatures above 100º c, during a certain period, after which it proceeds to the gradual cooling and neutralization with hydrochloric acid, or another appropriate, operating so that the bisulfite formed is maintained under this form, then adding ferrous salts and then other complementary materials, to increase the resistance of the foam, and finally proceeds to the filtration of the resulting liquid . (Machine-translation by Google Translate, not legally binding)
ES232989A1957-01-051957-01-05Procedure for the manufacture of foams (Machine-translation by Google Translate, not legally binding)
ExpiredES232989A1
(en)