Abstract: The invention relates to a method for converting biopolyesters consisting of straight-chain hydroxyacid monomers containing 10 to 40 carbon atoms, such as suberin and cutin, into a plain mixture of organic acids and their salts containing only a few main components. The depolymerization is carried out according to the invention by oxidizing either with a strong oxidizer or by dehydrating oxidation with strong alkali at elevated temperature.

Abstract: A process for the separation of phosphate minerals from a phosphate-carbonate ore, by flotation, wherein a phenol polymer such as a resol or a novolak, which improves the yield and selectivity of the phosphate minerals with respect to the carbonate minerals, is used in addition to a collector agent in the flotation.

Abstract: The invention relates to a method of recovering nutrients from the flue gases of a fertilizer plant by exposing hot, almost water-saturated reaction gases (4) obtained from the fertilizer production process to a countercurrent scrubbing (5, 6) and by scrubbing the hot gases (19) obtained from the drying (16) of the fertilizer, in order to recover the gaseous impurities present in the gases. According to the invention, the hot gases (19) obtained from the drying of the fertilizer are scrubbed (21) with the scrubbing solution (7) coming from the countercurrent scrubbing (5, 6) of the hot, almost water-saturated reaction gases (4), in order to concentrate this scrubbing solution (7) before it is returned to the fertilizer production process (1-3).

Abstract: The invention relates to a method for preventing fungus diseases in plants grown in, for example, a bed containing peat, by adding to the vegetation or the soil streptomyces griseaviridis stains ATCC 39271, 39272 and 39273. The aqueous suspension preferably contains at least 10.sup.5 spores/ml, and at least 10 ml of the aqueous suspension is spread per one m.sup.2, or the seeds are immersed in the aqueous suspension.

Abstract: The dispersability of a titanium dioxide pigment is improved by coating it with an organic coating and also an inorganic coating in a total amount of, expressed as oxide, not more than 0.5% and no less than 0.3% of the weight of the pigment. Suitable inorganic coatings are oxides and hydroxides of aluminium, zinc, titanium, zirconium and magnesium.

Abstract: A process for the production of an air-drying, modified amino-resin, which process comprises co-polycondensing one or more dialkyl ether compounds, which are dialkyl ether of the dimethylol derivatives of compounds containing two primary amido groups or similar groups, with at least one compound containing an auto-oxidative group, or polycondensing the said one or more dialkyl ether compounds and reacting the compound containing an auto-oxidative group with the condensate; the alcohol released being removed from the mixture. The auto-oxidative groups are typically supplied by allyl ethers and the dialkyl ether compound is e.g. bismethoxymethylene urea. The modified resins rapidly form hard films when exposed to atmospheric oxygen in the presence of drying agents.

Abstract: A process for the preparation of viscose by adding to cellulose pulp, manufactured by alkali cooking without prehydrolysis or by acid cooking without alkali extraction, steeping lye and an organic compound, steeping the pulp to form alkali cellulose, aging the alkali cellulose, xanthating the aged alkali cellulose with carbon disulfide to obtain cellulose xanthate and dissolving the cellulose xanthate to obtain viscose.

Abstract: A fungicide, especially for the dressing of cereal seeds, which contains: methylbenzimidazole-2-ylcarbamate and 1-[.beta.-(allyloxy)-2,4-dichlorophenethyl]imidazole, phenylcarbamoyl-1,4-oxatine or 1,2-di-(3-methoxycarbonyl-2) or methylbenzimidazole-2-ylcarbamate or 1-[.beta.-(allyloxy)-2,4-dichlorophenethyl]imidazole and at least two compounds selected from 2-pyridinethiol-1-oxide, zinc dimethyldithiocarbamate, 2,3-dihydro-6-methyl-5-phenylcarbamoyl-1,4-oxatine, 1,2-di-(3-methoxycarbonyl-2-thioureido)benzene, and the salts of the same.

Abstract: A process for producing hydrogen fluoride from an aqueous solution of hydrogen fluoride and sulfuric acid by distillation at an elevated temperature, in order to evaporate hydrogen fluoride of a desired concentration, in which the aqueous solution of hydrogen fluoride and sulfuric acid is stripped by steam in a separation zone, the released hydrogen fluoride is passed through a drying zone, where it is contacted with a batch of strong sulfuric acid in order to produce hydrogen fluoride of a desired concentration, and the sulfuric acid from the drying zone is fed to the separation zone.

Abstract: Crude phosphate is leached with nitric acid to produce an acid slurry, which is thereafter neutralized with ammonia in two successive stages while simultaneously cooling it and adding acid, part of the crude phosphate phosphorus being replaced with phosphoric acid added to the slurry to be neutralized, and in such a manner that at maximum 40% of the phosphoric acid is fed to the first neutralization stage and the rest is fed to the second neutralization stage, whereby the acidity of the slurry is adjusted to pH 2.5 - 4.5 during the first and to pH 5.0 - 6.0 during the second neutralization stage.

Abstract: A gas mask, especially a half mask or a full mask provided with an inner mask, and having protective glasses or spectacles and means for attaching them to the half mask or directly to the inner mask.

Abstract: Furfuryl acetate is reacted at 0.degree.-20.degree. C with a mixture containing strong nitric acid and less than 7 mole, preferably less than 5 mole, acetic anhydride per 1 mole furfuryl acetate, in order to produce an intermediate of nitration, whereafter water is added and the aqueous solution is neutralized to a pH of 4.7-6.5 and finally the mixture is heated to 40.degree.-60.degree. C.

Abstract: Furfuryl alcohol is esterified by means of an aliphatic anhydride or its halogen derivative using aliphatic, tertiary amines as catalysts.

Abstract: A continuous process for removing nitrates from nitrate containing aqueous solutions having a pH of about 0-7, which comprises: (1) extracting the nitrate containing aqueous solution with an organic amine salt dissolved in an organic solvent phase whereby the nitrate ion goes into the organic solvent, (2) separating the organic phase, (3) stripping the organic extraction solvent phase from the extraction with a stripping salt solution of pH at least 0.

Abstract: In the process for manufacturing a light-resisting titanium dioxide pigment suitable for matting artificial fibers, by adding to a suspension of titanium dioxide pigment some water-soluble vanadium compound plus possibly a compound of aluminum, silicon and/or, phosphorus, which are precipitated onto the surface of the titanium dioxide particles, whereafter the suspension is filtered, washed, thermally dried, and ground, the thermal drying and the grinding are carried out at such a low temperature that the pigment temperature at no stage rises above 300.degree.C and for such a short period that the vanadium remains on the surface of the titanium dioxide pigment particles without being substantially calcinated into the particles, which consequently remain white.

Abstract: The dispersability of a titanium dioxide pigment is improved by coating it with an organic coating and also an inorganic coating in a total amount of, expressed as oxide, not more than 0.5% and no less than 0.3% of the weight of the pigment. Suitable inorganic coatings are oxides and hydroxides of aluminium, zinc, titanium, zirconium and magnesium.