公开(公告)号：US20240376672A1

公开(公告)日：2024-11-14

申请号：US18286529

申请日：2022-04-13

Applicant: SNF GROUP

Inventor： Cyril BARRIERE ,  Gatien FAUCHER ,  Bastien MARTEL

IPC: D21H21/10 ,  C08F8/06 ,  C08F8/28 ,  D21H17/37 ,  D21H21/18 ,  D21H23/04

Abstract: A method for producing a sheet of paper or cardboard from a fibrous suspension, includes injection of a polymer P2 into a fibrous suspension, forming of a sheet of paper or cardboard, and drying the sheet of paper or cardboard. The polymer P2 is prepared, before injection of the polymer P2, from a water-soluble polymer P1 in the form of solid particles. Polymer P1 consists of at least one nonionic monomer selected from acrylamide, methacrylamide, N,N-dimethylacrylamide, and acrylonitrile. Polymer P1 is subjected to a reaction Re to yield polymer P2. The reaction Re includes the addition and the dissolution of solid particles of polymer P1 in an aqueous solution M1 of an alkali hydroxide and/or an alkaline earth hydroxide, and an alkali hypohalide and/or an alkaline earth hypohalide, prior to a reaction time of 10 seconds to 5 hours.

公开(公告)号：US20240254384A1

公开(公告)日：2024-08-01

申请号：US18562598

申请日：2022-07-08

Applicant: SNF Group

Inventor： Cédrick FAVERO ,  Johann KIEFFER

IPC: C09K8/88 ,  C09K8/42

CPC classification number: C09K8/882 ,  C09K8/424

Abstract: A method is for obtaining a bio-sourced (meth)allylsulfonate alkali salt obtained from a (meth)allyl halide. The (meth)allyl halide is at least partially renewable and non-fossil. A (co)polymer can be obtained from the bio-sourced (meth)allylsulfonate alkali salt. The (co)polymer can be used in a method for enhanced oil and/or gas recovery by sweeping a subterranean formation.

公开(公告)号：US20240034822A1

公开(公告)日：2024-02-01

申请号：US18349309

申请日：2023-07-10

Applicant: SNF Group

Inventor： Cédrick FAVERO ,  Johann KIEFFER ,  Nicolas BOISSE ,  Jing LING

IPC: C08F220/58 ,  C08L33/26 ,  C02F1/52 ,  D21H17/45

CPC classification number: C08F220/585 ,  C08L33/26 ,  C02F1/5272 ,  D21H17/455

Abstract: Provided is a polymer composition containing a water-soluble cationic copolymer P2 structured in micro-blocks obtained by radical polymerization of at least one non-ionic monomer and at least one cationic monomer, in the presence of a homopolymer P1 having an average molecular weight between 5,000 and 100,000 daltons, the homopolymer P1 having been prepared from 2-acrylamido-2-methylpropane sulphonate in salified form and in the presence of 200 to 20,000 ppm by weight of 2-methyl-2-propenyl-sulphonic acid in salified form. Related methods are also provided.

公开(公告)号：US11802109B2

公开(公告)日：2023-10-31

申请号：US17447754

申请日：2021-09-15

Applicant: SNF GROUP

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

IPC: C07C303/44 ,  C08F20/58 ,  C02F1/56 ,  C02F1/54 ,  C02F1/52

CPC classification number: C07C303/44 ,  C02F1/5272 ,  C02F1/56 ,  C08F20/58

Abstract: The invention relates to a method for the purification of acrylamido-2-methyl-2-propanesulphonic acid comprising the following successive steps:



1) preparation of a suspension of acrylamido-2-methyl-2-propanesulphonic acid crystals by distillation of an aqueous solution of acrylamido-2-methyl-2-propanesulphonic acid in order to obtain a suspension of acrylamido-2-methyl-2-propanesulphonic acid crystals,
2) isolation of the acrylamido-2-methyl-2-propanesulphonic acid crystals generally by solid/liquid separation from said suspension in order to isolate said acrylamido-2-methyl-2-propanesulphonic acid crystals,


characterised in that the distillation step is carried out continuously and at a pressure below atmospheric pressure.


The invention also relates to a polymer obtained from acrylamido-2-methyl-2-propanesulphonic acid crystals or its salts, obtained according to such a method, and to the use of said polymer in oil and gas recovery, in water treatment, in sludge treatment, in manufacturing paper, in construction, in mining, in cosmetic formulation, in detergent formulation, in textile making, or in agriculture.

公开(公告)号：US20250002625A1

公开(公告)日：2025-01-02

申请号：US18695812

申请日：2022-10-05

Applicant: SNF GROUP

Inventor： Frédéric BLONDEL ,  Céline BESSET ,  Benoît CLEMENT

IPC: C08F220/34 ,  A61K8/81 ,  A61Q19/00 ,  C11D3/00 ,  C11D3/37

Abstract: A polymer composition for thickening a cosmetic or detergent composition, the polymer composition including either at least one polymer cross-linked with at least one labile cross-linker and at least one non-labile cross-linker, or at least two cross-linked polymers, at least one being cross-linked with at least one labile cross-linker and at least one being cross-linked with at least one non-labile cross-linker. The polymer composition makes it possible to maintain the viscosity of a cosmetic or detergent composition over time.

公开(公告)号：US12091480B2

公开(公告)日：2024-09-17

申请号：US17041746

申请日：2018-04-12

Applicant: SNF GROUP

Inventor： Cédrick Favero ,  Johann Kieffer ,  Jing Ling

IPC: C08F220/34 ,  C07C213/08 ,  C07C213/10 ,  C07C219/08

CPC classification number: C08F220/34 ,  C07C213/08 ,  C07C213/10 ,  C07C219/08

Abstract: Process for the production of 2-dimethylaminoethyl (meth)acrylate in multiple stage batch reactions involving the recycling of the catalyst (DBTO) in subsequent reaction, the addition a certain amount of fresh catalyst to the recycled catalyst, the use of said catalysts in the subsequent reaction, and wherein the volume decrease due to azeotropic distillation is compensate in order to keep the volume constant in the reactor during the reaction by the continuous addition of a composition comprising methyl(meth)acrylate and dimethylaminoethanol.

公开(公告)号：US20240199939A1

公开(公告)日：2024-06-20

申请号：US18556603

申请日：2022-04-13

Applicant: SNF Group

Inventor： Olivier BRAUN ,  Bruno GIOVANNETTI ,  Farag MUHAMMED

IPC: C09K8/12 ,  C08F220/58 ,  C09K8/52 ,  E21B21/06

CPC classification number: C09K8/12 ,  C08F220/585 ,  C09K8/52 ,  E21B21/062 ,  C08F2800/10 ,  C09K2208/10

Abstract: This invention relates to a water-soluble associative amphoteric polymer and its use as a subterranean drilling or treatment fluid, for example in the fields of subterranean hydrocarbon recovery, construction, or geothermal energy.

公开(公告)号：US20240132711A1

公开(公告)日：2024-04-25

申请号：US18481832

申请日：2023-10-05

Applicant: SNF GROUP

Inventor： Cédrick FAVERO ,  Johann KIEFFER ,  Nicolas BOISSE ,  Jing LING

IPC: C08L33/26 ,  C08F220/56 ,  C09K8/588 ,  C09K8/62 ,  E21B43/20

CPC classification number: C08L33/26 ,  C08F220/56 ,  C09K8/588 ,  C09K8/62 ,  E21B43/20 ,  C08L2205/025

Abstract: This invention relates to a polymer composition comprising a water-soluble anionic P2 polymer obtained by radical polymerization of at least one anionic monomer, in the presence of a water-soluble homopolymer P1 with a weight-average molecular weight of between 5,000 and 100,000 daltons
said water-soluble anionic P2 polymer having a weight-average molecular weight of greater than 100,000 dalton and less than or equal to 40 million daltons,

said water-soluble P1 homopolymer having been prepared from 2-acrylamido-2-methylpropanesulphonic acid in salified form and in the presence of 200 to 20,000 ppm by weight of 2-methyl-2-propenylsulphonic acid in salified form.

公开(公告)号：US20230392066A1

公开(公告)日：2023-12-07

申请号：US18452258

申请日：2023-08-18

Applicant: SNF Group

Inventor： Cédrick FAVERO ,  Olivier BRAUN ,  Lionel LAUBER

IPC: C09K8/44

CPC classification number: C09K8/44

Abstract: The invention relates to a method for modifying the water permeability of a subterranean formation, comprising at least the following steps:



Preparing an injection fluid from a dispersion of a hydrophilic phase in a lipophilic phase, with water or brine, the dispersion comprising:

a hydrophilic phase comprising at least one cross-linked (co)polymer PR,
a lipophilic phase,
at least one interface polymer composed of at least one monomer of formula (I):












Injecting the injection fluid into the subterranean formation,
said cross-linked (co)polymer PR forming a hydrogel in the presence of water.

公开(公告)号：US11767381B2

公开(公告)日：2023-09-26

申请号：US17934378

申请日：2022-09-22

Applicant: SNF Group

Inventor： Cédrick Favero ,  Johann Kieffer ,  Benoît Legras ,  Nicolas Boisse ,  Jing Ling

IPC: C08F120/34 ,  C08K5/1545

CPC classification number: C08F120/34 ,  C08K5/1545

Abstract: The present invention relates to a water-soluble polymer obtained by polymerization of at least a 2-dimethylaminoethyl acrylate monomer and/or its salts, in presence of at least a tocopherol and/or its derivatives, or a tocotrienol and/or its derivatives, and its uses.