公开(公告)号：US11365173B2

公开(公告)日：2022-06-21

申请号：US16926159

申请日：2020-07-10

Applicant: SPCM SA

Inventor： Cédrick Favero ,  Johann Kieffer

IPC: C07C309/15 ,  C08F20/58 ,  C02F11/147 ,  C07C303/44 ,  C07C303/02 ,  C09K8/68 ,  C09K8/80 ,  E21B43/26 ,  C09K8/588 ,  E21B43/16 ,  C02F1/56 ,  C02F103/10

Abstract: The present invention relates to a hydrated crystalline form of 2-acrylamido-2-methylpropane sulfonic acid having a 2-theta powder X-ray diffraction diagram comprising peaks at 10.58°, 11.2°, 12.65°, 13.66°, 16.28°, 18.45°, 20°, 20.4°, 22.5°, 25.5°, 25.88°, 26.47°, 28.52°, 30.28°, 30.8°, 34.09°, 38.19°, 40.69°, 41.82°, 43.74°, 46.04° degrees (+/− 0.1°.
The present invention also relates to a production method for this form of 2-acrylamido-2-methylpropane sulfonic acid and a preparation method for an aqueous solution A of a salt of this form of 2-acrylamido-2-methylpropane sulfonic acid, and the (co)polymer of this form of -acrylamido-2-methylpropane sulfonic acid.

公开(公告)号：US11560510B2

公开(公告)日：2023-01-24

申请号：US17235492

申请日：2021-04-20

Applicant: SPCM SA

Inventor： Johann Kieffer ,  Cédrick Favero ,  Olivier Braun ,  Thomas Divers ,  Nicolas Boisse ,  Jing Ling ,  Kemin Xie

IPC: C09K8/68 ,  C09K8/80 ,  C08F220/56 ,  E21B43/267 ,  C09K8/60 ,  C08F226/02

Abstract: Fracturing fluid comprising, in solution in water, a proppant and an associative amphoteric polymer, the said polymer and comprising: 0.01 to 10 mol % of at least one cationic monomer containing a hydrophobic chain, from 0.09 to 89.99 mol % of at least one anionic monomer, and from 10 to 99.9 mol % of at least one nonionic water-soluble monomer, the total amount of monomer being 100 mol %. Fracturing process using this fluid.

公开(公告)号：US11535588B2

公开(公告)日：2022-12-27

申请号：US17664209

申请日：2022-05-19

Applicant: SPCM SA

Inventor： Cédrick Favero ,  Johann Kieffer

IPC: C07C309/15 ,  C08F20/58 ,  C02F11/147 ,  C02F1/56 ,  C09K8/68 ,  C09K8/80 ,  C09K8/588 ,  E21B43/16 ,  C02F103/10

Abstract: The present invention relates to a hydrated crystalline form of 2-acrylamido-2-methylpropane sulfonic acid having a 2-theta powder X-ray diffraction diagram comprising peaks at 10.58°, 11.2°, 12.65°, 13.66°, 16.28°, 18.45°, 20°, 20.4°, 22.5°, 25.5°, 25.88°, 26.47°, 28.52°, 30.28°, 30.8°, 34.09°, 38.19°, 40.69°, 41.82°, 43.74°, 46.04° degrees (+/−0.1°). The present invention also relates to a production method for this form of 2-acrylamido-2-methylpropane sulfonic acid and a preparation method for an aqueous solution A of a salt of this form of 2-acrylamido-2-methylpropane sulfonic acid, and the (co)polymer of this form of -acrylamido-2-methylpropane sulfonic acid.

公开(公告)号：US11370749B2

公开(公告)日：2022-06-28

申请号：US16494587

申请日：2018-03-19

Applicant: SPCM SA

Inventor： Cédrick Favero ,  Johann Kieffer ,  Frédéric Daguerre

IPC: C07C309/15 ,  C02F1/56 ,  C02F11/147 ,  C09K8/588 ,  C09K8/80 ,  E21B43/16 ,  E21B43/26 ,  C08F20/58 ,  C09K8/68 ,  C02F103/10 ,  C09K8/88 ,  C07C309/21 ,  C07C303/02 ,  C07C303/44 ,  C08F20/56

Abstract: The present invention relates to a method for the treatment of a suspension of solid particles in water using water-soluble (co)polymers made from the hydrated crystalline form of 2-acrylamido-2-methylpropane sulfonic acid or of at least one of the salts thereof. This method is particularly useful for treating residues resulting from the mining industry.

公开(公告)号：US12145900B2

公开(公告)日：2024-11-19

申请号：US17609173

申请日：2020-05-07

Applicant: SPCM SA

Inventor： Cédrick Favero ,  Raphaël Doudin ,  Johann Kieffer ,  Benoît Legras

IPC: C07C309/15 ,  B01D33/073 ,  B01D33/46 ,  B01D33/60 ,  B01D33/62 ,  C07C303/44 ,  C08F20/58 ,  C09K8/035

Abstract: A continuous process for filtering a suspension of 2-acrylamido-2-methylpropane sulfonic acid crystals by means of a rotary pressure filter equipped with a drum, a surface of which is provided with cells covered with a filter medium, the drum rotating within a fixed concentric cylinder comprising at least three zones sealed from each other, respectively a filtration zone, a washing zone and a discharge zone, each zone opening onto the cells.

公开(公告)号：US11535587B2

公开(公告)日：2022-12-27

申请号：US17664208

申请日：2022-05-19

Applicant: SPCM SA

Inventor： Cédrick Favero ,  Johann Kieffer

IPC: C07C309/15 ,  C08F20/58 ,  C02F11/147 ,  C09K8/68 ,  C09K8/80 ,  E21B43/26 ,  C09K8/588 ,  E21B43/16 ,  C02F1/56 ,  C02F103/10

Abstract: The present invention relates to a hydrated crystalline form of 2-acrylamido-2-methylpropane sulfonic acid having a 2-theta powder X-ray diffraction diagram comprising peaks at 10.58°, 11.2°, 12.65°, 13.66°, 16.28°, 18.45°, 20°, 20.4°, 22.5°, 25.5°, 25.88°, 26.47°, 28.52°, 30.28°, 30.8°, 34.09°, 38.19°, 40.69°, 41.82°, 43.74°, 46.04° degrees (+/−0.1°).
The present invention also relates to a production method for this form of 2-acrylamido-2-methylpropane sulfonic acid and a preparation method for an aqueous solution A of a salt of this form of 2-acrylamido-2-methylpropane sulfonic acid, and the (co)polymer of this form of -acrylamido-2-methylpropane sulfonic acid.

公开(公告)号：US20220227704A1

公开(公告)日：2022-07-21

申请号：US17609173

申请日：2020-05-07

Applicant: SPCM SA

Inventor： Cédrick Favero ,  Raphaël Doudin ,  Johann Kieffer ,  Benoît Legras

IPC: C07C309/15 ,  C08F20/58 ,  C09K8/035 ,  B01D33/46

Abstract: A continuous process for filtering a suspension of 2-acrylamido-2-methylpropane sulfonic acid crystals by means of a rotary pressure filter equipped with a drum, a surface of which is provided with cells covered with a filter medium, the drum rotating within a fixed concentric cylinder comprising at least three zones sealed from each other, respectively a filtration zone, a washing zone and a discharge zone, each zone opening onto the cells.