Abstract: A polymeric formal having the general formula ##STR1## wherein p is 0 or 1, n is a positive integer from 2 to 200 and R represents optionally halogen-substituted straight-chained or branched-chained alkyl radicals having 3 to 8 carbon atoms, an aryl radical or an aralkyl radical which can be substituted on one or both sides with alkyl or hydroxyalkyl ether groups; improved methods for the preparation of such formals, tetrabromoxylylene-bis-(.beta.-hydroxyethylether) compounds employed in the preparation of such formals and the use of such polymeric and oligomeric formals as flame retardant agents in plastic compositions especially thermoplastic and polycondensation plastic compositions.

Abstract: The invention relates to a process for the manufacture of oxiranes of the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are hydrogen, methyl and/or ethyl and the total amount of carbon atoms of R.sub.1, R.sub.2 and R.sub.3 is utmost 2 wherein olefin is subjected to an electrochemical system and reacts with a chlorine-containing anolyte to form an olefin chlorohydrin, with the latter subsequently reacted to form the oxirane.The oxiranes are known compounds and are extensively used in the chemical field, for example, in the manufacture of detergents, polyethers, etc.

Abstract: Salicylaldehyde and other hydroxybenzaldehydes are prepared by oxydation of a hydroxybenzyl alcohol in the presence of a platinum metal catalyst and lead, silver, tellurium or tin or compounds thereof as activator.

Abstract: A process for preparing a vaccine containing unprecipitated filaments and hepatitis B Dane particle specific antigens by removal from a blood serum of other proteinaceous matter such that the serum contains less than 10% proteinaceous matter other than that associated with hepatitis B surface antigen or the filament or Dane particle specific antigen. Any virus present is inactivated, and the antigenous mass is diluted with a physiologically acceptable medium.

Abstract: The invention relates to the concentration by flotation of fine mesh size and/or oxidized ores.The invention consists in using a chelating agent selected from the .beta.-diketones as flotation reagents in a conventional flotation process. Fine mesh size ores and/or oxidized ores, notably oxidized copper, lead or zinc ores with carbonated and/or silicated gangue can also be used as starting materials.Application:making use as starting materials of ores which are difficult to cause to float by conventional methods.

Abstract: Novel O-methyl-O-n-propyl-O-(2-carbalkoxy-2-alkoxy-vinyl)-thionophosphoric acid esters of the formula ##STR1## in which R and R.sup.1, which may be identical or different, each represent alkyl,Which possess arthropodicidal properties.

Abstract: An anion exchange resin particle provided with specific structure as well as specific functional groups is found to be suitable for uranium technology, especially for separation of uranium isotopes.

Abstract: Enzyme preparations, particularly enzyme preparations containing organic sulfhydryl compounds for activation, are stabilized by means of a stabilizing agent comprising oxypolygelatine, especially oxypolygelatine having an average molecular weight of from 10,000 to 50,000.

Abstract: In the production of phosphorous or phosphonous acid ester chlorides of the formulaR.sub.m (R'O).sub.n PCl.sub.3-m-nwhereinR and R' are various organic radicals,m = 0 or 1,n = 1 or 2, andm+n = 1 or 2,By reacting a trialkylphosphite, a triarylphosphite, a dialkylchlorophosphite or a diarylchlorophosphite with phosphorustrichloride, phosphorous acid alkyl ester dichloride, phosphorous acid aryl ester dichloride, or by reacting a dialkyl-phosphonite with dichlorophosphonite, at a temperature between about -10.degree. C and 120.degree. C, the improvement which comprises effecting the reaction in the presence of a catalytic quantity of a compound of at least one of 3- and 5-valent phosphorus, e.g. a phosphine, phosphine oxide, phosphine sulfide, halogen-phosphorane or phosphoric acid-tris-amide. A small amount of an alcohol or dialkalphosphite increases the yield.

Abstract: A laminate comprising an inorganic oxidic or metallic surface and a polymer, the laminate having in the region of the interface between inorganic oxidic or metallic surface and the polymer a silane having a capped function group; the use of silanes having capped functional groups as adhesivizing agents especially for use between organic polymers and substances having inorganic oxidic and/or metallic surfaces. Also disclosed is the surface of an inorganic oxidic or metallic surface resistive to corrosion by applying thereto a silane having a capped functional group.

Abstract: High pressure hose made of elastomers and reinforcing inserts having an inside diameter greater than 50 mm and a unit construction in the longitudinal direction of any desired length of at least 100 m. Such high pressure hoses made by continuously constructing the hose on a stationary mandrel over which the hose rollingly or slidingly pulled off in the direction of production with low friction.

Abstract: The invention is directed essentially to photographic material containing, on a carrier, a layer with azo dyestuffs of the formula ##STR1## wherein A, B, X and Y are certain substituents, in a second main aspect azo dyestuffs of the formula ##STR2## wherein B' represents certain substituents and in a third main aspect azo deystuffs of the formulaA.sub.1 --N.dbd.N--B.sub.1 --NH--CO--X.sub.1 --Y--Z.sub.1 --OC--HN--B.sub.1 --N.dbd.N--A.sub.1wherein A.sub.1, B.sub.1, X.sub.1, Z.sub.1 and Y are certain substituents.The photographic materials provide advantages stemming from the use of the dyestuffs of the invention which are distinguished by particularly high fastness to light coupled with excellent bleachability, good resistance to diffusion and advantageous color strength.

Abstract: A vaccine against viral heptitis comprising:A. antigenic particles having a particle size in the range of 30 to 50 nanometers, said antigenic particles containing heptitis B surface antigens;B. said antigen having less than 10 units of free antibody to heptitis B surface antigens per 1,000 units of hepatitis B surface antigens;C. at least 5% of the particles of said vaccine in the size range of 30 to 50 nanometers containing the hepatitis B surface antigenic specificity(s) which have been termed "e-antigen";D. said heptatis B surface antigens, including e-antigens, being present in said vaccine in an amount sufficient to produce antibodies when introduced into a host animal, the balance being a medium which is physiologically acceptable, especially to humans and primates.

Abstract: A demaino kallikrein-trypsin inhibitor obtained from cattle organs is characterized by (a) 0 to 3 lysine residues and/or 3 to 6 arginine residues and/or 1 to 4 tyrosine residues; (b) the 10- and/or 21-tyrosine residues being unsubstituted or substituted by at least one nitro, nitroso or amino in the ortho position relative to the phenolic hydroxy group; and (c) having protease inhibitory activity of BPTI and elastase inhibition activity.

Abstract: In a labeling station for applying labels one above the other onto objects, having at least one pickup element mounted essentially on a rotatable carrier for movement about an axis a gripper cylinder is provided having a rotating carrier having eccentrically disposed gripping and pressing elements for the upper and lower labels, which elements are tangent to the circulation path of the pickup elements approximately in synchronism. The labels are transferred by the gripping and pressing elements to objects moved along a transport path whose areas to be labeled are at different distances from the gripper cylinder axis. The carrier of the gripping and pressing elements comprises two parts disposed one over the other and eccentrically to one another, which carry upper and lower gripping and pressing elements at different radii and revolve at equal angular velocity.

Abstract: Iron is removed from grits, e.g. crushed corundum by contacting the grits with aqueous hydrochloric acid for dissolving of the iron and provision of a suspension of the grits in the acedic aqueous medium; water is added to the suspension and it is then centrifuged; water is added to the grit-rich fraction and the resulting suspension is subjected to a second centrifuging step.

Abstract: Aryl sulfonic acid esters of the formula ##STR1## wherein R.sup.1 represents hydrogen, alkyl groups of 1 to 8 carbon atoms, bromine or chlorine, R.sup.2 represents R.sup.1 or the group ##STR2## Hal represents bromine or chlorine, x the numbers 2 to 4, n the numbers 3 to 5, y the numbers 4-x; m = 5-n, R.sup.3 represents bromine, chlorine or the group ##STR3## and Z represents --O--, --S--, ##STR4## alkylene with 1 to 4 carbon atoms, or alkylidene; a process for their product and their use as a flame retardant, especially for polyolefins.

Abstract: This invention provides a disposable urinal to be worn by female incontinent patients. It consists of an adjustable belt having a flexible sheet attached thereto. A urine collecting pouch depends from the sheet, with a disposable vaginal pad provided between the wearer's body and the sheet.

Abstract: In the production of a coated building component comprising the steps of mixing an inorganic binder, water and aggregate to produce a workable mass, molding said mass into a preformed component, applying to the preformed component an aqueous paste containing a metal oxide and at least one of waterglass and a phosphate to form a coating and allowing the coating to harden, the improvement which comprises applying about 190 to 400 g of the paste per square meter of surface to be coated, the application being effected in the presence of at least about 0.5% by weight of the inorganic binder or, in the case of lime-sand bricks, by weight of the binder plus aggregate, of a water soluble inorganic salt which converts the aqueous paste into a gel-like non-flowing form.

Abstract: Method of preparing phthalide by hydrogenolysis of 3-chlorophthalide in the presence of a nobel metal catalyst, wherein hydrogenolysis is carried out in the absence of HCl acceptor.The phthalide which is produced is a valuable chemical intermediate for the manufacture of dyes, plant protecting agents and pharmaceuticals.