Abstract: The invention relates to a method for impregnating alumina-containing catalyst support with platinum. In the method a platinum-containing solution is prepared by using a compound which contains bivalent platinum. The method comprises a stage during which the said platinum-containing solution is oxidized in order to form a solution which contains tetravalent platinum, from which solution platinum is adsorbed on the support.

Abstract: The invention relates to a catalyst intended for purifying diesel exhaust gases, the catalyst comprising a honeycomb and a support which has been prepared by using titanium dioxide and an inorganic sol, and at least one catalytically active agent.

Abstract: Described is a coating composition comprising a liquid medium containing a titanium dioxide pigment and a coating film formation resin said titanium dioxide pigment being in the form of flaky or fin-like small pieces of silicon dioxide covered by titanium dioxide and having a diameter of 1 to 300 microns and a thickness of 0.001 to 1 micron, a considerable portion of said silicon dioxide being dissolved out from said titanium dioxide-coated silicon dioxide small pieces.

Abstract: A metal alloy in which the highest individual metal concentration is nickel and which always includes at minimum 4% by weight aluminum is used as the substrate for catalysts for purifying exhaust gases. Chromium, iron, cobalt, molybdenum and titanium are among the other metals possible.

Abstract: A controllably active fertilizing preparation in the form of an emulsion-suspension or an emulsion is comprised of:a) 30-90% by weight of mixtures containing plant nutrients,b) 5-50% by weight of water,c) 2-20% by weight of an oleophilic organic substance,d) 1-25% by weight of a surface-active substance, ande) 0.1-10% by weight of an acid or its mixture, salt or anhydride. The acid component improves the extraction of phosphor.

Abstract: A fertilizer controllably affecting composition which is easy to handle and which has enormous ability to transfer nitrogen to plant organism and improve the growth, has now been invented by including into it 30-90% by weight of a compound containing plant nutrients, 6-50% by weight of water, 2-20% by weight of oil and 2-25% by weight of water-in-oil type (w/o) surfactant, whereby the composition is in the form of a stable paste or an emulsion slurry.

Abstract: The present invention relates to a method for simultaneous continuous-action production of alkali metal or ammonium peroxodisulphate salts and alkali metal hydroxide. The electrolytic phase of the method is performed in a three-space electrolytic cell (1), into the middle space (3) whereof alkali metal sulphate is conducted, into the anode space (4), ammonium or alkalimetal sulphate, or a mixture thereof is conducted, and into the cathode space (2), water or diluted alkali metal hydroxide is conducted. Direct current is conducted through the electrolytic cell (1), whereby the sulphate ions pass into the anode space (4) and are oxidized into peroxodisulphate ions, thus producing alkali metal or ammonium peroxodisulphate, which is transformed into saline form in a fashion known in itself in the art, and the alkali metal ions pass into the cathode space (2) and form alkali metal hydroxide.

Abstract: The invention relates to a method for producing alkali metal phosphate, in particular monopotassium phosphate or its aqueous solution, by reacting fertilizer-grade phosphoric acid with alkali metal chloride at 350.degree. . . . 700.degree. C. to produce alkali metal metaphosphate, hydrolyzing thus obtained solid reaction product, removing the insoluble residue containing impurities from the hydrolysis solution in order to achieve a pure solution of alkali metal phosphate, and if further desired, crystallizing and separating the alkali metal phosphate from said aqueous solution.

Abstract: The invention relates to a method of preparing microcrystalline titanium dioxide, in which a) the solid titanium dioxide hydrate is treated with a base, b) the precipitate treated with the base is treated with hydrochloric acid, and c) the precipitate treated with the base and the hydrochloric acid is neutralized. It has been noted that useable rutile crystals, a more appropriate crystal size and crystal size distribution and that chemicals can be saved if as the final hydrochloric acid content of the stage a) is adjusted a lower value than usually, being about 8 to 25 g/liter, for the precipitation of microcrystalline titanium dioxide. Hereby the neutralization of the stage c) can also be carried out by raising the pH to a lower value than usually, i.e. the value about 4.0 to 6.0.

Abstract: The invention relates to a hydrogenation catalyst for use in the preparation of hydrogen peroxide and to a method for the preparation of the catalyst. The hydrogenation catalyst contains in the main platinum group metal, of which more than 50 wt % is palladium. According to the invention, at least one additional metal is added to the platinum group metal.

Abstract: A product contains silicon dioxide in the form of polysilicic acid in a supporting structure of cellulose. The polysilicic acid contains aluminum silicate sites. In the preparation of the product the cellulose and the silicon dioxide in the form of polysilicic acid are blended to obtain the product in solid form. The obtained blended product is modified with a compound containing aluminum, such as a solution aluminate, which causes the formation of aluminum silicate sites on the polysilicic acid. The cellulose used is viscose cellulose.

Abstract: A face shield comprising a frame (1), a glass (2) attached to the frame, a padding (3) between the frame and the face and an attaching portion, for example, a ribbon (4) encircling the head, and to which face shield air is led. The frame is hollow so that the air led into the face shield is directed into the hollow frame and the frame comprises openings through which the air is discharged inside the face shield.

Abstract: A coated metal substrate with a ceramic composition and method which involves applying several layers of the following materials:a. stainless steelb. thermal shock resistant ceramic coating; andc. abrasion resistant ceramic material.Each layer of each material is applied by flame spray means to the metallic substrate which is at a temperature above 250.degree. F. but below 500.degree. F., which is then cooled to a temperature below 250.degree. F. before applying the next layer. Zirconium oxide is a preferred thermal shock resistant ceramic coating and aluminum oxide is the preferred abrasion resistant ceramic material.

Abstract: A method for preparing anhydrous ferric chloride from a hydrous solution containing ferric chloride that contains organic substances and/or ferrous chloride. In the method, water is removed from a ferric-chloride water solution or a solution, in which at least a portion of the ferrous chloride has been converted by oxidation into ferric chloride, by drying in an atmosphere containing hydrochloric acid. The anhydrous ferric chloride is refined by sublimating it into gas phase in a chlorine-containing atmosphere and by subliming it into a pure crystalline ferric chloride.

Abstract: The present invention relates to a procedure for cleaning a sinter used for filtering a metal catalyst suspension. As taught by the invention, the sinter is treated with an aqueous solution of hydrogen peroxide for displacing the metal catalyst left in the pores of the sinter with the aid of the gas produced by the decomposition of the hydrogen peroxide, caused by the metal catalyst, until gas formation ceases, indicating that no significant quantities of metal catalysts are left in the sinter. Such hydrogen peroxide decomposition is produced by the so-called anthraquinone process, in which an anthraquinone derivative is dissolved in an organic solvent then reduced with the aid of hydrogen gas in the presence of a catalyst to the corresponding anthraquinone derivative; the catalyst is then separated from such solution by filtering. Then, such corresponding anthraquinone derivative is oxidized with air or oxygen, whereby it reverses to the state preceding hydrogenation, i.e.

Abstract: The invention relates to a process for converting anthrahydroquinone dissolved in an organic solvent to hydrogen peroxide and anthraquinone by causing a mixture of oxygen and anthrahydroquinone to flow concurrently through a reaction zone. According to the invention, the mixture of oxygen and anthrahydroquinone is caused, as an almost continuous mixed dispersion, to flow through the tubular reaction zone at such a velocity that the vacuum-pipe velocity of the liquid therein is higher than 0.05 m/s. The ratio of the length of the tube used as the reactor to its diameter is at minimum approx 10, and it may contain a static mixer made up of one or several parts.

Abstract: The present invention relates to a process for the preparation of polyaluminum hydroxychloride complexes having the general formula Al(OH).sub.x Cl.sub.y in solution or in solid form and intended to be used as flocculants and coagulants for water purification, sludge dewatering, plant dewatering and paper production, whereby one reacts aluminum chloride in solution with aluminum hydroxide, or aluminumoxide hydrates at a temperature of 120.degree.-170.degree. C. at an elevated pressure for 1.5-5 hrs, whereby the relationship AlCl.sub.3 :Al(OH).sub.3 is thus adjusted that the relationship OH:Al in the renewing compound Al(OH).sub.x Cl.sub.y becomes 0.5 to 1.5, preferably 0.8 to 1.2.

Abstract: The invention relates to a process for the production of silicon ceramic whiskers and silicon ceramic powder from silicon fluoride and ammonia or a hydrocarbon, at an elevated temperature. According to the invention, the hydrocarbon or ammonia (4) is decomposed separately at a high temperature into reactive carbon or nitrogen and hydrogen, whereafter the carbon or nitrogen radical thus obtained is further in a gas phase contacted with reactive silicon formed therein from silicon difluoride, in order to deposit finely-divided silicon nitride or silicon carbide out from the gas phase.

Abstract: The object of the invention is a process for coating a titanium dioxide pigment according to which a dispersion of titanium dioxide in water is formed, optionally in the presence of a dispersing agent, such as a water soluble silicate and/or an aminoalcohol, whereafter to the titanium dioxide pigment dispersion (1) an acidic hydrolysable titanium compound in an amount of 0.1 to 1.5% by weight calculated as TiO.sub.2, (2) a water soluble phosphate in an amount of 0.1 to 1.0% by weight calculated as P.sub.2 O.sub.5, (3) an acidic hydrolysable zirconium salt in an amount of 0.1 to 1.4% by weight calculated as ZrO.sub.2, is added, the slurry is made alkaline with a base, and (4) a water soluble hydrolysable alkaline aluminium compound is added in an amount of 0.5 to 5.5% by weight calculated as Al.sub.2 O.sub.3, whereby all the percentages by weight are calculated from the weight of the TiO.sub.

Abstract: The invention concerns a method for producing hydrogen peroxide using a process based on anthraquinone derivatives. According to the invention the solvent system of the working solution in said process contains carbamate having a general formula ##STR1## where groups R.sup.1 and R.sup.2, which can be the same or different ones, are a hydrogen atom or a hydrocarbon group and R.sup.3 is a hydrocarbon group,whereby the groups R.sup.1, R.sup.2 and R.sup.3 can optionally be part of a cyclic structure and/or substituted by groups which are inert to the process.