Document M45v5LvMK12a5vVz80gg1rLQL

FILE NAME: Chemical Abstracts (CHAB) DATE: 1959 DOC#: CHAB041 OCUMENT DESCRIPTION: Abstract Originally Published in 1959 by Morris S 3 'i S 3 U> -Va the carrier. A catalyst prepd. by depositing Ni on A120 what lowered. The decrease is almost insignificant in the with broad pores has a high degree of activity and stability. case of the cationites KU-1, KU-2, and RF (from 3 to 9%). t n --- That prepd. by deposition on fine-pored AljO is much less The capacity of SBS is increased by 11% with 5 X 107 act;ve. J. Rovtar Leach rfintgens and is decreased by a further increase in the 1 The activating action of calcium in multicomponent cata- a irradiation. KB-4 (a carboxylic resin of aliphatic structure) lysts. Alfons Krause and Ludwik Schulz (Univ. Poznan, is the least stable to the action of 7-quanta. Its capacity Poland). Roczniki Chcm. 32, 1191-3(1958)(German sum is decreased by 17% for a 3 X lO'-rntgen irradiation. The mary).--Ca(OH)j shows superadditive activity in the ter reason for the difference in the decrease in capacity of car nary catalyst composed of Fe(OH)i, Cu(OH)j, and Ca(OH)2, _ boxylic, sulfo-, and phosphoric acid resins is apparently when acting on the H20 2decompn. at 37. Pure Ca(OH)2 the different stability toward radiation of the groups COOH, is inactive. The activity of lime appears usually in com HjPOi, and SO:H. A variation in the swelling capacity of plexes with Cu++. The possible radical structure of such the resins indicates either a destruction or a " stitching" of catalysts is discussed. A. Krglewski the cationites. The swelling capacity varies sharply, espe Sulfonic acid ion-exchange resins based on polystyrene j, cially at doses <10* rontgens. The swelling capacity of and formaldehyde. A. A. Vasil'ev and A. A. Vansheldt. PhOH-HCHO cationites (RF, KU-1 ) increases with the dose, Zhur. Priklad. Khim. 31, 1692-7(1958); cf. C.A. 53, 2734g. i.e. destruction of these resins occur; that of SBS (a sulfo- --Emulsions of polystyrene (mol. wt. about 100,000) were resin with cross-linked butadiene components) increases in sulfonated with H2SO in the concn. range from 92% to the interval 5 X 107- 5 X 10s rdntgens, and that of KU-2 oleum contg. 65% SO>. In all cases not less than 6 parts -- (sulfopolystyrene resin in which divinylbenzene is the bridge of oleum/part polystyrene were required regardless of the forming agent) remains unchanged at the above mentioned initial concn. of the acid. When less than the optimum doses, and sharply decreases (also SBS) with a 7-irradiation amt. of acid was used the resins obtained had the same ion >10* rontgens. The max. value of oxidizability was ob exchange capacity, o, but they were insol. in -i2r>0 (, had a served for KB-4 (a 4-fold increase at 3 X 10* rontgens). high swelling coeff., k (above 10), a: . 1 low mech. strength. This indicates the slight stability towards radiation of the When more acid was used (9:1) k was high. At the opti aliphatic components of the resins. The most stable is KU-2. mum ratio of 6:1 sulfonated polystyrene was heated with The capacity of all cationites studied decreases with an oleum contg. 5-10% SO:, with stirring, up to 205-15 till increase in the 0-irradiation. The sulfocationite KU-1 completely dissolved. The soin, was cooled, 1.0-1.1 moles -- showed the smallest decrease (~2.5% ), while KB-4 de CH20/link of polystyrene was added with stirring, heated creased the most (45%). The cationites KU-1, SBS, and gradually to 130-50, cooled, pulverized, washed with KB-4, irradiated by 5 X 107 rontgens showed an increase H20 , 2-3 days with N NaOH, regenerated with 2N HC1, in their swelling capacity. The swelling capacity of RF de and washed with HiO till neutral to methyl orange. For creases for doses up to 5 X 107 rontgens, and increases ior this resin (SSF), a = 4.2-4.6 meq./g. and k = 2.4-3.2. " greater doses; that of KU-2 decreases with an increase in SSF was highly selective toward Temmycin and Aureo the dosage. The data concerning the chem. stability of the mycin. I. Bencowitz resins is in complete agreement with the data concerning Application of radioactive sulfur-35 for the determination the swelling capacity. KU-2 is the most chemically stable. of sulfo groups in su'forarbon. N. P. Drozdov and A. N ._ The action of 7-rays is observed to be more destructive Popov. J. Appl. Chem. U.S.S.R. 30, 1140-3(1957)(Eng- than that of -particles for the same integral dosage. lish translation).--See C.A. 51, 18391/. B. R. B. Jean Plamondon Powdering of ion-exchange resins. V. P. Meleshko, Reversibility of ion-exchange processes on cation O. V. Chervinskaya, M. N. Romanov, and D. P. Izmailova. exchange resins. E. A. Bozhevol'nov. Trudy Vscsoyuz. J. Appl. Chcm. U.S.S.R. 30, 854-7(1957)(English trails- e Nauch. Isslcdovalcl. Inst. Khim. Reaktivov 1956, No. 24, lation).--See C.A. 51, 15837c. B. R. B. 105-7; Refcrat. Zhur., Khim. 1956, Abstr. No. 57704.--A Secondary processes of amphoteric ionites and the possi series of expts. is described in which 2 samples of cation bility of their practical utilization. A. B. Davankov, V. M. exchange resin in Sr (from labeled Sr) and the other in H, Laufer, and L. A. Shits. J. Appl. Chcm. U.S.S.R. 30, K, Ba, Mg or Pb form, are brought to equil. with the identi 887-91(1957)(English translation).--See C.A. 51, 17022/. cal vols. of electrolyte (0.05M HC1). Equal samples of the B. R. B. cation-exchange resin contain equal amts, of sorbed Sr. Ion exchangers. V. G. Austerweil. Gnie chim. 80, This indicates that in all investigated cases the ion-exchange 29-43 , 63-78(1958).--This is a comprehensive discussion of sorption is reversible. V. S. Mihajlov basic information on the subject. The following types of j Fundamental aspects of the fight against corrosion in the exchangers and their uses arc described: natural and syn chemical industry. R. Marpon. Feinlures, pigments, thetic minerals, synthetic org.-base exchangers of polycon vernis 34, 491-8(1958).--The corrosive atin. usually encoun densation, polymerization, and plastic origin. Other topics tered in the chem. industry requires not only an appropriate discussed are: exchange equil. in terms of electron pptn. carefully selected protective coating on materials subject to reaction, Donnan equil., and mass action; exptl. methods -- corrosion, but equally, frequent inspections and recoatings. and results for column exchange; ion-exchange membrane Andries Voet processes; applications of ion exchange. E. W. B. Industrial toxicology of some chlorinated hydrocarbons. Radiological evaluation of ion-exchange materials. W. M. Sari and Jelica Kneievi (Inst. Med. Research, Zagreb, Fuchs and F. Gebhardt (Tech. Hochschule, Aachen, Ger.). a Yugoslavia). Arhiv. hig. rada 8, 251-69(1957)(English MPI. Ver. Grosskcsselbesitzer No. 55, 282-5(1958).--The " summary).--Investigations of the action of CCU, hexa- max. vol. capacity (MVK) of an ion-exchange resin is detd. chloroethane, and hexachlorocyclohexane on 81 workers in by its chein. analysis, and is a const, for a given resin dry cleaning shops and a drug factory were examd. The high initial concns. The useful vol. capacity (NVK.) ot a mm globulin ratio. ""r *'"~***ST . Bican-Fister* resin is not a const.; for given dimensions of an exchange filter NVK varies with the filter loading and the rate and Toxic hazards: asbestos. George E. Morris. New Engl. J. Med. 260, 141(1959).--Max. allowable concn. of concn. of the regenerating soin. Values of NVK for given asbestos in industrial atms. is 5,000,000 particles/cu. ft. of conditions can be detd. by flowing naturally radioactive air. Persons with previous pulmonary or cardiac disease KC1 soins., or soins, of CoCl2 contg. Co" , through the ex should not be employed where exposure to asbestos dust is a change filter. Continuous measurements of radioactivity problem. X-ray study of the chest and phys. examn. an may be made on the effluent directly, or on a series of sam nually should be required of all persons employed in dusty ples of the effluent, so that the concn. in the effluent and asbestos operations. The signs and symptoms of asbestosis tLimeweaotiftbSre1a0k0-t,hLroeuwgahtitcaKnSbNe,daentdd. AmDbactraliatereIRpre1s2e0ntreedsinfos.r_ are described. Marion Horn Pcskin Roger W. Ryan Chemical stability towards radiation of ion-exchange re See also: Prepn. of cellulose derivs. with ion-exchange sins. Action of y- and 0-irradiation on cationites. A. P. _ properties (Iritani) 23. Polevodov, V. A. Nikashina, A. V. Gordicvskil, M. M. t Patents: Plaster for mounting elec. app. (Drummond) Senyavin, and A. Kh. Breger (D. I. Mendeleev Chem.- 20. Polymeric sulfonamidoalkyi vinyl derivs. [ion-exchange Technol. Inst., Moscow). Nauch. Doklady Vysshci Sltknly, resins] (Melamed) 31. Ceramics of low dielec, loss [insu Khim. i Khim. Tckhnol. 1958, 761-4.--Under the influence lators] (Compagnie gnrale de tlgraphie sans F. I.) 19. of 7-irradiation the capacity of the resins studied is some- Improved epoxide resin compns. (McDowall) 31.