| Patent application number | Description | Published |
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| 20100093874 | COPOLYMER INCLUDING BETAINE UNITS AND HYDROPHOBIC AND/OR AMPHIPHILIC UNITS, METHOD FOR PREPARING SAME AND USES THEREOF - The invention relates to a copolymer including betaininc units and hydrophobic and/or amphiphile units. The invention also relates to a method for preparing a copolymer including betaininc units and hydrophobic and/or amphiphile units, by controlled micellar polymerisation. The invention further relates to the uses of the copolymer. The copolymer is particularly used for increasing the viscosity of saline aqueous compositions. | 04-15-2010 |
| 20100210724 | Method for modifying the properties of an aqueous suspension - A method for modifying the properties of a suspension of solid or liquid particles in an aqueous medium, includes the step of adding to the suspension or to the aqueous medium a polymer prepared by inverse emulsion polymerization of monomers A | 08-19-2010 |
| 20110257333 | Expandable elastomeric material in the presence of water or oil - A process for the preparation of an elastomer capable of swelling in oil and/or in water and brine comprising the steps of: a) making an aqueous inverse emulsion of particles of a polymer comprising a betaine group prepared by inverse emulsion polymerization of monomers A | 10-20-2011 |
| 20140100304 | ENCAPSULATED ACTIVATOR AND ITS USE TO TRIGGER A GELLING SYSTEM BY PHYSICAL MEANS - A process allowing the encapsulation of a polymerization accelerator comprising the steps of: a) providing an reverse emulsion containing, in an oil phase, a water solution/dispersion containing the polymerisation activator, the oil phase including a heat curable mixture of an isocyanate and a polyalkyldiene hydroxylated or polyol, b) pouring the reverse emulsion in a water phase to make a multiple emulsion water/oil/water, containing drops of activators as the internal water phase, and then, c) heating the multiple emulsion obtained in step b) at a temperature of between 50 and 95° C., in order to cure the polyisocyanate in polyurethane and obtain drops of activator enclosed in shells of polyurethane dispersed in water. | 04-10-2014 |
| 20140378617 | Preparation of Amphiphilic Block Polymers by Controlled Radical Micellar Polymerisation - The present invention relates to the preparation of block copolymers, which can be used in particular as rheology agents, suitable, inter alia, for oil extraction, comprising a step of radical micellar polymerisation wherein the following are brought into contact in an aqueous medium: —hydrophilic monomers, dissolved or dispersed in the aqueous medium; —hydrophobic monomers in the form of a micellar solution, i.e. containing, in a dispersed state, micelles comprising these hydrophobic monomers; —at least one radical polymerisation initiator; and —at least one radical polymerisation control agent. The polymers obtained according to the invention can be used in particular for enhanced oil recovery (EOR). | 12-25-2014 |
| 20150041138 | NOVEL AGENT FOR INHIBITING THE SWELLING OF CLAYS, COMPOSITIONS COMPRISING SAID AGENT AND METHODS IMPLEMENTING SAID AGENT - The present invention concerns the use of a novel additive as an agent for inhibiting the swelling of clays, in particular in the field of boreholes. More specifically, the present invention concerns the use of a specific diamine and diacid salt as an agent for inhibiting the swelling of clays in an aqueous medium, and a drilling or hydraulic fracturing fluid composition comprising the salt according to the invention and methods for drilling or hydraulic fracturing implementing said salt. | 02-12-2015 |
| 20150087565 | Treatment of underground formations with gels - The present invention relates to the formation of a gel within a medium M, in particular within an underground formation, which comprises the following steps: (EI) a basic compound C is added to a fluid latex L comprising dispersed particles of a polymer P, bearing ester side functions, said basic compound C being added in an amount suitable for hydrolysing at least one part of said ester side functions into carboxylic acid and/or alcohol functions, as a result of which a modified latex L′ is obtained, the viscosity of which gradually increases with time from the addition of the compound C up to the formation of a gel; then (E2) the resulting modified latex is introduced into the medium M before the formation of the gel and the gel is left to form within the medium M. | 03-26-2015 |
| Patent application number | Description | Published |
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| 20110018133 | ELECTRIC VIA WITH A ROUGH LATERAL SURFACE - A via connecting the front surface of a semiconductor substrate to its rear surface, this via having a rough lateral surface. | 01-27-2011 |
| 20110018139 | SCALLOPED TUBULAR ELECTRIC VIA - A via connecting the front surface of a substrate to its rear surface and having, in cross-section in a plane parallel to the surfaces, the shape of a scalloped ring. | 01-27-2011 |
| 20110018140 | ELECTRIC VIA COMPRISING LATERAL OUTGROWTHS - A via connecting the front surface of a substrate to its rear surface, this substrate including a porous region extending from at least a portion of the periphery of the via, the via including outgrowths extending in pores of the porous region. | 01-27-2011 |
| 20110079919 | ELECTRICAL CONNECTION VIA FOR THE SUBSTRATE OF A SEMICONDUCTOR DEVICE - An electrical connection via passing through a substrate for a semiconductor device is made of at least one conducting ring formed in an annular hole passing through the substrate. | 04-07-2011 |
| 20110079920 | ELECTRICAL CONNECTION VIA FOR THE SUBSTRATE OF A SEMICONDUCTOR DEVICE - An electrical connection via is formed through a substrate to make an electrical connection from one face of the substrate to the other. The via includes a ring made of an electrically conductive material. The ring is formed in a hole in the substrate so as to at least partly form the via. | 04-07-2011 |
| 20120074527 | INTEGRATED CIRCUIT COMPRISING A DEVICE WITH A VERTICAL MOBILE ELEMENT INTEGRATED IN A SUPPORT SUBSTRATE AND METHOD FOR PRODUCING THE DEVICE WITH A MOBILE ELEMENT - The integrated circuit comprises a support substrate having opposite first and second main surfaces. A cavity passes through the support substrate and connects the first and second main surfaces. The integrated circuit comprises a device with a mobile element, the mobile element and a pair of associated electrodes of which are included in a cavity. An anchoring node of the mobile element is located at the level of the first main surface. The integrated circuit comprises a first elementary chip arranged at the level of the first main surface and electrically connected to the device with a mobile element. | 03-29-2012 |
