PL9368B3

PL9368B3 - Method and device for direct cold preparation of resin solutions.

Info

Publication number: PL9368B3
Application number: PL9368A
Authority: PL
Filing date: 1927-10-29
Publication date: 1928-10-31

Description

Najdluzszy czas trwania patentu do 11 stycznia 1942 r.Przedmiotem patentu Nr 6710 jest za¬ stosowanie dzialania zimnych roztworów wodorotlenku sodowego na zywice, w ce¬ lu otrzymania z niej przezroczystych roz¬ tworów, przyczem stezenie roztworów wo¬ dorotlenku sodowego moze dosiegnac 7 lub nawet 10 g w litrze.Przedmiotem niniejszego wynalazku sa pewne ulepszenia, dotyczace sposobu opi¬ sanego w patencie glównym.Zamiast stosowac zimny roztwór wodo¬ rotlenku sodowego mozna uzyc zimnego roztworu innej wolnej zasady rozpuszczal¬ nej mineralnej lub organicznej, o stezeniu nizszem od stezenia powodujacego wytra¬ canie isie zywiczanu tej zasady.Zamiast stosowac sama zasade mozna uzyc soli którejkolwiek z tych zasad pod warunkiem, zeby stala dysocjacji kwasu tej soli byla nizsza od stalej dysocjacji kwasów zawartych w zywicy. Stezenie tej soli powinno byc nizsze od stezenia, powo¬ dujacego wytracanie sie zywiczanu zasady zawartej w uzytej soli* Mozna równiez stosowac mieszaniny za¬ sad albo mieszanine soli lub mieszanine soli i zasad przy tych samych warunkach stezenia.Roztwory przezroczyste, zawierajace zywice, otrzymane zapomoca wymienio¬ nych odczynników, mozna wzbogacic przez dodanie do nich jednego z tych czynni-ków w ilosci co najwyzej równej ilasci do* puszczalnej dla zabiegu pierwszego, i dzialajac ta mieszanina znowu na zywice.To wzbogacanie mozna powtarzac kilka¬ krotnie* PL PLThe longest term of the patent until January 11, 1942. The subject of the patent No. 6710 is the use of cold sodium hydroxide solutions on resins in order to obtain clear solutions from it, while the concentration of sodium hydroxide solutions may reach 7 or even 10 g per liter. The subject of the present invention are some improvements to the process described in the main patent. Instead of using a cold solution of sodium hydroxide, a cold solution of another soluble mineral or organic free base may be used with a concentration below the concentration causing the digestion. It is possible to use a salt of any of these bases instead of using the principle itself, provided that the acid dissociation constant of the salt is lower than that of the acids contained in the resin. The concentration of this salt should be lower than the concentration causing the precipitation of the base resin in the salt used * You can also use mixtures of bases or a mixture of salt or a mixture of salts and bases at the same concentration conditions. Clear solutions containing resins obtained after of the above-mentioned reagents, can be enriched by adding to them in an amount at most equal to the amount acceptable for the first treatment, and by treating the mixture again on the resin. This enrichment may be repeated several times * PL PL

Claims

1. Patent claims. 1. A process for the direct cold preparation of resin solutions, characterized by replacing the cold sodium hydroxide solutions with a cold solution of another soluble free base, mineral or organic, at a concentration lower than that causing the precipitation of this resin. rules.

2. The method according to claim 1, characterized by the fact that the salt of this base is used instead of the base itself, because the acid of this salt has a dissociation constant lower than the dissociation constant of acids contained in the resin, and the salt concentration should be lower than the concentration causing the precipitation of the base resin contained in the salt used.

3. The method according to p. 1 and 2, the significant point is that clear solutions containing resins obtained with the aid of one of the above-mentioned reagents are enriched by adding these reagents to this solution in an amount at most equal to the amount allowed for the first and by re-treating the mixture with resin, this enrichment can be repeated several times. S o ci 6 te d'Ex p loit a tion de Brevets & Proccdes P. N. Zastepca: I. Myszczytiski, patent attorney. Printed by L. Boguslawski, Warsaw. PL PL