PL39796B3 - - Google Patents

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Publication number
PL39796B3
PL39796B3 PL39796A PL3979656A PL39796B3 PL 39796 B3 PL39796 B3 PL 39796B3 PL 39796 A PL39796 A PL 39796A PL 3979656 A PL3979656 A PL 3979656A PL 39796 B3 PL39796 B3 PL 39796B3
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PL
Poland
Prior art keywords
wax
hydrogen peroxide
wort
resin content
amount
Prior art date
Application number
PL39796A
Other languages
Polish (pl)
Filing date
Publication date
Application filed filed Critical
Publication of PL39796B3 publication Critical patent/PL39796B3/pl

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Description

Opublikowano dnia 20 marca 1957 r. !<3LtOTEKA| ?**;s POLSKIEJ RZECZYPOSPOLITEJ LUDOWEJ OPIS PATENTOWY Nr 39796 Inz. mgr Antoni Sentek Warszawa, Polska KI. 28 a, 3 Sposób otrzymywania brzeczki chromowej do garbowania skór Patent dodatkowy do patentu Nr 33690 Patent trwa od dnia 26 maja 1956 r.W patencie nr 33690 opisany jest sposób otrzy¬ mywania brzeczki chromowej do garbowania skór, w którym w celu zredukowania kwasu chromowego i wzbogacenia brzeczki w substan¬ cje organiczne stosuje sie substancje bitumiczne.Wedlug jednego z zastrzezen tego patentu jako substancje bitumiczne stosuje sie woski, np. montanowe, przy czym czesc substancji bitu¬ micznej przechodzi do brzeczki, pozostala zas czesc utlenia sie do wosków szlachetnych.Obecnie zostalo stwierdzone, ze zywice zawarte w wosku montanowym w ilosci ponad 15 °/o utrudniaja normalny przebieg reakcji, powodujac zlepianie sie i skrupianie wosku w miare doda¬ wania kwasu chromowego lub dwuchromianu sodu do reaktora. Nastepstwem tego jest zmniej¬ szenie sie czynnej powierzchni wosku, reaguja¬ cego z kwasem chromowym i zatrzymanie re¬ akcji, pomimo zwiekszania w mieszaninie steze¬ nia kwasu chromowego.Przedmiotem patentu jest sposób wstepnego preparowania wosku montanowego, umozliwia¬ jacy stosowanie do otrzymywania brzeczki wosku z zawartoscia zywic ponad 15 % z tym samym efektem, jak wosku nie preparowanego o zawar¬ tosci ponizej 15% zywic.Preparowanie wosku przeprowadza sie w tem¬ peraturze 100° C za pomoca wody utlenionej,-po uprzednim zemulgowaniu go w malej ilosci wo¬ dy. W czasie preparowania wosku woda utlenio¬ na korzystne jest dodanie do emulsji malej ilosci parafiny, np. 5 °/o w stosunku do ilosci wosku.Ilosc wody utlenionej, która nalezy uzyc do pre¬ parowania wosku zalezy od procentowej zawarto¬ sci w nim zywic. Przy zawartosci w wosku okolo 20 % zywic stosuje sie na 1 czesc wagowa wosku okolo V4 czesci wagowej 30 °/o-owej wody utler nionej. Preparowanie wosku nalezy uwazac za zakonczone po zredukowaniu sie wody utlenionej i odparowaniu wody. PLPublished on March 20, 1957! <3LtOTEKA | ? **; s OF THE POLISH PEOPLE'S REPUBLIC PATENT DESCRIPTION No. 39796 Inz. Antoni Sentek, MA Warsaw, Poland KI. 28 a, 3 The method of obtaining chromium wort for tanning leather. Additional patent No. 33690 The patent lasts from May 26, 1956. Patent No. 33690 describes a method of obtaining chromium wort for tanning leather, in which in organic substances, bituminous substances are used. According to one of the claims of this patent, waxes, e.g. montan waxes, are used as bituminous substances, with part of the bituminous substance being transferred to the wort, while the remaining part oxidizes to noble waxes. that the resins contained in the montan wax in an amount greater than 15% obstruct the normal course of the reaction, causing the wax to stick together and cough as chromic acid or sodium dichromate is added to the reactor. The consequence of this is the reduction of the active surface of the wax, which reacts with chromic acid, and the stoppage of the reaction, despite the increase in the concentration of chromic acid in the mixture. with a resin content of more than 15% with the same effect as unprepared wax with a resin content of less than 15%. Wax is prepared at a temperature of 100 ° C with hydrogen peroxide, after emulsifying it in a small amount of water. dy. When preparing the wax, hydrogen peroxide is advantageously added to the emulsion a small amount of paraffin, for example 5% based on the amount of wax. The amount of hydrogen peroxide to be used to prepare the wax depends on its percentage of resin content. With a wax content of about 20%, the resins are used for 1 part by weight of the wax, about V4 parts by weight of 30% hydrogen peroxide. Wax preparation is considered complete when the hydrogen peroxide has been reduced and the water has evaporated. PL

Claims (2)

Zastrzezenia patentowe 1. Sposób otrzymywania brzeczki chromowej do garbowania skór, wedlug patentu nr 33690, znamienny tym, ze wosk montanowy o za¬ wartosci zywic powyzej 15% poddaje sie wstepnemu preparowaniu za pomoca wody utlenionej. Claims 1. The method of obtaining chromium wort for tanning leather, according to patent No. 33690, characterized in that montan wax with a resin content of more than 15% is subjected to preliminary treatment with hydrogen peroxide. 2. Sposób wedlug zastrz. 1, znamienny tym, ze stosuje sie dodatek parafiny. Inz. mgr Antoni Sentek GDA-512. 11.2.57. 100 druk. III 70X100. PL2. The method according to claim The process of claim 1, characterized in that the addition of paraffin is used. Inz. Antoni Sentek GDA-512, MSc. 11.2.57. 100 printing III 70X100. PL
PL39796A 1956-05-26 PL39796B3 (en)

Publications (1)

Publication Number Publication Date
PL39796B3 true PL39796B3 (en) 1956-10-15

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