Abstract: The invention relates to the use of a betaine as a foam drainage reducing agent. The invention also relates to the use of betaine in processes involving foam.

Abstract: The invention relates to a treatment that can be used to remove a coating and/or stain from a construction material, such as anti-graffiti treatment. The inventive treatment uses a beta-dicarbonyl product.

Abstract: The invention relates to the use, in anti-graffiti treatments, and preferably in graffiti-suppressing treatments, of a particular dicarboxylic acid diester having improved treatment efficiency.

Abstract: The invention concerns amphiphilic block copolymers, a process for making the same, and its use in emulsions. The block copolymers comprise a hydrophilic block and a hydrophobic block and can be used in emulsion as an emulsifier or as a co-emulsifier, particularly in water-in-oil emulsions.

Abstract: The invention relates to an agent for the hydrophilisation of an organic plastic material such as a thermoplastic polymer, wherein said hydrophilisation agent is selected from optionally polyalkoxylated ester phosphates in their acid form or salt form. The invention also relates to objects made of thermoplastic polymers having surfaces hydrophilised by the agents of the invention.

Abstract: The invention relates to the use, in anti-graffiti treatments, and preferably in graffiti-suppressing treatments, of a particular dicarboxylic acid diester having improved treatment efficiency.

Abstract: The invention relates to the use of a betaine as a foam drainage reducing agent. The invention also relates to the use of betaine in processes involving foam.

Abstract: The invention relates to a treatment that can be used to remove a coating and/or stain from a construction material, such as anti-graffiti treatment. The inventive treatment uses a beta-dicarbonyl product.

Abstract: Oilfields are stimulated by injecting an inflow stream of a fluid into an oil producing well linked to the oilfield, displacing the oil and recovering an outflow stream of fluid comprising the oil, wherein at least two streams are injected into at least two production zones of an oil well or are injected into at least two different oil producing wells from which at least two outflow streams from the two zones or wells are combined before recovering, with a scale inhibitor having detectable moieties being introduced into the oilfield(s) and/or into the fluid, and wherein two different scale inhibitors are used, dedicated to the two zones or wells, said different scale inhibitors having different detectable moieties that can be distinguished by analysis.

Abstract: The invention relates to the use of a betaine as a foaming agent and a foam drainage reducing agent. The invention also relates to the use of betaine in processes involving foam.

Abstract: Oilfields are stimulated by injecting an inflow stream of a fluid into an oil producing well linked to the oilfield, displacing the oil and recovering an outflow stream of fluid comprising the oil, wherein at least two streams are injected into at least two production zones of an oil well or are injected into at least two different oil producing wells from which at least two outflow streams from the two zones or wells are combined before recovering, with a scale inhibitor having detectable moieties being introduced into the oilfield(s) and/or into the fluid, and wherein two different scale inhibitors are used, dedicated to the two zones or wells, said different scale inhibitors having different detectable moieties that can be distinguished by analysis.

Abstract: A temperature-stable, non eco-toxic oil-base well fluid that is particularly suitable for high pressure/high temperature drilling comprises an emulsification system comprising at least one superamide that may or may not be polyalkoxylated, optionally associated with a non-ionic co-surfactant. The oil-base well fluid comprising such a system can be used at temperatures of up to about 200° C. due to the production of highly temperature-stable reverse emulsions.

Abstract: A cement is disclosed containing at least a hydraulic binder and anisotropic polymer particles whereof the modulus of elasticity is not more than 10 GPa and whereof the longest dimension ranges on an average between 0.6 and 6 mm. The cement is used in oil and gas extraction.

Abstract: The invention concerns a cement comprising at least a hydraulic binder and anisotropic polymer particles whereof the modulus of elasticity is not more than 10 GPa and whereof the longest dimension ranges on an average between 0.6 and 6 mm. The invention also concerns a cement paste and the corresponding consolidated material, the method for obtaining the cement, the paste and the material and their uses in the building sector, in public works and in oil and gas extraction.

Abstract: The present invention relates to an aqueous suspension comprising: A) silica and/or alumina particles, and B) a compound of overall formula (I): Al(OH)a(SO4)b(SiOx)c(Y)d  (I)  with: a between 0.1 and 2, b between 0.3 and 1.5, c between 0 and 0.1, d greater than 0.05, Y chosen from alkali metals and alkaline earth metals, x between 2 and 4, and its derivatives, the said compound (B) being present in the suspension at a concentration of at least 1.65 mol/l, expressed as moles of aluminium issued from the said compound. Another subject-matter of the invention is a process useful for the preparation of the said suspension and its use in the field of cement pastes, mortars and concretes and in particular as setting and hardening accelerating agent for cements.