Abstract:
A colloidal solution of Chrysotile asbestos which is obtained from a pre-purified aqueous suspension of crude Chrysotile asbestos by means of a shearing action is subjected to filtration or centrifuging to eliminate therefrom incompletely separated colloidal matter. Subsequently, the asbestos is precipitated from the refined solution and subjected to further processing.
Abstract:
AQUEOUS OIL EMULSIONS USED IN METAL MACHINING ARE SEPARATED INTO AN AQUEOUS PHASE AND AN OILY PHASE BY ADDING A MIXTURE OF A FORMATE OR ACETATE OF AN ALKALINE EARTH METAL, EARTH METAL, CADMIUM OR ZINC TO THE EMULSION TO BREAK THE EMULSION WITH A FINELY DIVIDED ABSORBENT AND ADSORB THE SEPARATING OIL, THEREBY CONVERTING THE OIL TO A FILTERABLE FORM AND FILTERING IT OFF.
Abstract:
A colloidal solution of Chrysotile asbestos which is obtained from a pre-purified aqueous suspension of crude Chrysotile asbestos by means of a shearing action is subjected to filtration or centrifuging to eliminate therefrom incompletely separated colloidal matter. Subsequently, the asbestos is precipitated from the refined solution and subjected to further processing.
Abstract:
1,134,364. Fibrous polyoxymethylene from trioxan. DEUTSCHE GOLDUND SILBERSCHEIDEANSTALT. 5 Sept., 1967 [5 Sept., 1966], No. 40429/67. Heading C3P. Fibrous polyoxymethylene is obtained by forming an intimate mixture, e.g. by spraying or shaking of crystalline finely divided trioxan with AlCl 3 and/or TiCl 4 as initiator and heating the mixture, e.g. at 45‹ to 80‹ C. for 1 to 5 hours, and separating the polymer thus obtained from any residual monomer.