Abstract: The present invention relates to a novel solid presentation form of a phenol derivative, characterized by a rounded portion and a flat portion. The compositions thus obtained have advantageous properties suitable for the storage, handling and flow of the compounds. The present invention also relates to a process for preparing these solids, and to the use thereof, in particular in the polymer and agri-food industries.

Abstract: The subject-matter of the invention is a process for encapsulating one or more substances with a matrix, wherein said process comprises the preparation of a mixture of said matrix in the liquid state with said substance(s), then the solidification of the mixture obtained, said matrix consisting of vanillin or ethylvanillin or a vanillin/ethylvanillin mixture. The solid compound thus obtained is particularly advantageous in the field of food for human consumption and animal feed, in the pharmaceutical field, as a fragrance in the cosmetics, perfumery and detergence field, or as an encapsulated active ingredient in the pharmaceutical field. The use of a compound chosen form vanillin, ethylvanillin and vanillin/ethylvanillin mixtures as encapsulating agent is also subject-matter of the present invention.

Abstract: The invention relates to a novel solid form of diphenol compound. A process for the preparation of diphenol prills having a spherical shape is disclosed. Said process comprising providing a molten composition comprising from 50 to 100 wt. % of a diphenol compound or a mixture of at least two diphenol compounds, and less than 0.1 wt. % of water; forcing said molten composition through at least one droplet generator means to form droplets; and cooling said droplets to form solid diphenol prills. The diphenol prills obtainable by said process are also one subject-matter of the invention.

Abstract: The invention relates to a novel solid form of diphenol compound. A process for the preparation of diphenol prills having a spherical shape is disclosed. Said process comprising providing a molten composition comprising from 50 to 100 wt. % of a diphenol compound or a mixture of at least two diphenol compounds, and less than 0.1 wt. % of water; forcing said molten composition through at least one droplet generator means to form droplets; and cooling said droplets to form solid diphenol prills. The diphenol prills obtainable by said process are also one subject-matter of the invention.

Abstract: The subject-matter of the invention is a process for encapsulating one or more substances with a matrix, wherein said process comprises the preparation of a mixture of said matrix in the liquid state with said substance(s), then the solidification of the mixture obtained, said matrix consisting of vanillin or ethylvanillin or a vanillin/ethylvanillin mixture. The solid compound thus obtained is particularly advantageous in the field of food for human consumption and animal feed, in the pharmaceutical field, as a fragrance in the cosmetics, perfumery and detergence field, or as an encapsulated active ingredient in the pharmaceutical field. The use of a compound chosen form vanillin, ethylvanillin and vanillin/ethylvanillin mixtures as encapsulating agent is also subject-matter of the present invention.

Abstract: Process for the purification of a residue containing solids and mother liquor and having a chloride ion content greater than 5000 ppm by weight relative to the weight of the residue which comprises (a) piston washing said residue with a washing fluid and (b) recovering a purified residue.

Abstract: Process for the combined regeneration of at least two soluble salts contained in a residue of an industrial process comprising heavy metals, comprising: adding an amount of reactive aqueous solution needed to completely dissolve the salts which are desired to be regenerated to the residue; subjecting the resulting aqueous suspension to a separation to obtain an aqueous production solution on the one hand and insoluble impurities on the other hand, which are removed; successively subjected the aqueous production solution to at least two selective crystallization steps intended to crystallize, separately, the at least two soluble salts which are desired to be regenerated, which are washed, dried and regenerated separately; and adjusting the concentration of at least one of the soluble salts to be regenerated in the aqueous production solution, at the moment when such solution is subjected to the step of crystallization of this salt, to give rise to the selective crystallization of this salt, by addition of a co

Abstract: Process for the purification of a residue containing solids and mother liquor and having a chloride ion content greater than 5000 ppm by weight relative to the weight of the residue which comprises (a) piston washing said residue with a washing fluid and (b) recovering a purified residue.

Abstract: Process for the combined regeneration of at least two soluble salts contained in a residue of an industrial process comprising heavy metals, comprising: adding an amount of reactive aqueous solution needed to completely dissolve the salts which are desired to be regenerated to the residue; subjecting the resulting aqueous suspension to a separation to obtain an aqueous production solution on the one hand and insoluble impurities on the other hand, which are removed; successively subjected the aqueous production solution to at least two selective crystallization steps intended to crystallize, separately, the at least two soluble salts which are desired to be regenerated, which are washed, dried and regenerated separately; and adjusting the concentration of at least one of the soluble salts to be regenerated in the aqueous production solution, at the moment when such solution is subjected to the step of crystallization of this salt, to give rise to the selective crystallization of this salt, by addition of a co

Abstract: Process for the production of sodium chloride crystals from a sodium chloride brine contaminated by potassium chloride and sulphate ions, according to which a calcium compound (32) is added to the brine (48) to crystallize glauberite (35), which is isolated, the resulting aqueous solution (36) is subjected to evaporation to crystallize sodium chloride (40), which is collected, and the aqueous mother liquor (41) from the crystallization of the sodium chloride is subjected to cooling (42) to crystallize glaserite (45).

Abstract: Process for the manufacture of an aqueous sodium chloride solution, according to which a solid material comprising sodium chloride and heavy metals is dispersed in water, the aqueous medium thus obtained is alkalinized so as to precipitate the heavy metals in the form of metal hydroxides, calcium carbonate is coprecipitated with the metal hydroxides in the aqueous medium and the aqueous medium is then subjected to mechanical clarification.

Abstract: Process for the manufacture of an industrial aqueous solution of sodium chloride, according to which an aqueous mixture (12) containing an aqueous solution of sodium chloride and of polyvalent metals is prepared by introducing into water (10) a solid product (8) collected from the dry-route treatment, with sodium bicarbonate (4), of smokes (2) containing hydrogen chloride, and the said aqueous medium (12) is treated in order to remove the polyvalent metals therefrom.