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：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.

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：US12030832B2

公开(公告)日：2024-07-09

申请号：US17198573

申请日：2021-03-11

Applicant: SNF GROUP

Inventor： Cédrick Favero ,  Johann Kieffer ,  Nicolas Boisse ,  Bruno Michel ,  Jing Ling

IPC: C07C213/06 ,  B01J19/28 ,  B01J31/22 ,  B01J35/23 ,  B01J35/30 ,  B01J37/00 ,  C07C219/08 ,  C08F20/34 ,  C07C19/08

CPC classification number: C07C213/06 ,  B01J19/28 ,  B01J31/2213 ,  B01J35/23 ,  B01J35/393 ,  B01J37/0036 ,  C07C219/08 ,  C08F20/34 ,  B01J2219/1946 ,  B01J2231/49 ,  B01J2531/42

Abstract: The invention relates to a new dialkyl tin oxide catalyst composition and its use for the synthesis of amino alkyl (meth)acrylates by transesterification from an alkyl (meth)acrylates and an amino alcohol, and especially 2-dimethylaminoethyl (meth)acrylate.
The invention also relates to polymers made with quaternized amino alkyl (meth)acrylates and use of said polymers in water treatment, sludge dewatering, papermaking process, agriculture, cosmetic and detergency composition, textile process, oil and gas recovery process such as enhanced oil recovery, fracturing, mining operation such as tailings treatment.

公开(公告)号：US11773199B2

公开(公告)日：2023-10-03

申请号：US18069623

申请日：2022-12-21

Applicant: SNF Group

Inventor： Cédrick Favero ,  Olivier Braun ,  Thierry Leblanc

IPC: E21B43/20 ,  E21B43/267 ,  C09K8/588 ,  C09K8/60 ,  C09K8/80 ,  C08F220/56 ,  C09K8/64

CPC classification number: C08F220/56 ,  C09K8/588 ,  C09K8/64 ,  C09K8/80 ,  E21B43/20 ,  E21B43/267 ,  C08F2800/10

Abstract: The invention relates to an inverse polymer emulsion having the particular feature of auto-inverting without any need for the use of an inverting agent and containing a polymer of at least one water-soluble monomer and at least one LCST macromonomer. The invention also relates to the use of the inverse emulsion in the fields of the oil and gas industry, water treatment, slurry treatment, paper manufacturing, construction, mining, cosmetics, textiles, detergents or agriculture.

公开(公告)号：US11767460B2

公开(公告)日：2023-09-26

申请号：US17422840

申请日：2020-01-29

Applicant: SNF Group

Inventor： Cédrick Favero ,  Olivier Braun ,  Lionel Lauber

IPC: C09K8/44 ,  E21B43/16

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：US12209219B2

公开(公告)日：2025-01-28

申请号：US17754796

申请日：2020-11-05

Applicant: SNF GROUP

Inventor： Cédrick Favero

IPC: C09K8/68

Abstract: The invention relates to a composition for preparing injection fluid in oil and gas recovery comprising an inverse emulsion of an associative water-soluble polymer A comprising at least one hydrophobic monomer or hydrophobic macromonomer, and solid particles of a water-soluble polymer B, said polymer B being preferably associative. The invention also relates to a method of treating a portion of subterranean formation comprising providing the composition, preparing an injection fluid with at least the composition, introducing the injection fluid into portion of the subterranean formation. The composition is particularly useful to prepare fracturing fluid in fracturing operations.

公开(公告)号：US12098325B2

公开(公告)日：2024-09-24

申请号：US17422838

申请日：2020-01-29

Applicant: SNF GROUP

Inventor： Cédrick Favero ,  Olivier Braun ,  Lionel Lauber

IPC: C09K8/588 ,  C08F220/56

CPC classification number: C09K8/588 ,  C08F220/56

Abstract: The present invention relates to a method for modifying the water permeability of a subterranean formation which comprises oil, said method 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 linear (co)polymer E,
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, comprising a linear (co)polymer E concentration, such that when released and in contact with water, the viscosity of the injection fluid is greater than the viscosity of the oil in the formation.

公开(公告)号：US11987744B2

公开(公告)日：2024-05-21

申请号：US18452258

申请日：2023-08-18

Applicant: SNF Group

Inventor： Cédrick Favero ,  Olivier Braun ,  Lionel Lauber

IPC: C09K8/44 ,  E21B43/16

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：US11787889B2

公开(公告)日：2023-10-17

申请号：US17906941

申请日：2021-03-23

Applicant: SNF GROUP

Inventor： Cédrick Favero ,  Thierry Bessenet ,  Frédéric Daguerre ,  Jing Ling ,  Nicolas Boisse

IPC: C08F220/56 ,  C10M167/00 ,  C08J3/12 ,  C10M105/34 ,  C10M105/40 ,  C10M107/48 ,  C10M111/04

CPC classification number: C08F220/56 ,  C08J3/122 ,  C10M105/34 ,  C10M105/40 ,  C10M107/48 ,  C10M111/04 ,  C08J2333/26 ,  C10M2207/2815 ,  C10M2207/2835 ,  C10M2225/0405

Abstract: Process for preparing water-soluble polymers in powder form by polymerization of water-soluble monoethylenically unsaturated monomers comprising the successive steps:



a) Spraying on the inner wall of a polymerization vessel, the lubricant composition LC1: alkyl oleate/polyoxyethylene oleyl ether phosphate/sorbitan monolaurate,
b) Polymerizing in aqueous solution in the presence of polymerization initiators at least one water-soluble monounsaturated ethylenic monomer,
c) Discharging the polymer gel,
d) Granulating the polymer gel thus obtained in a granulator, in presence of a lubricant composition LC2: alkyl oleate/polyxoyethylene oleyl ether phosphate/sorbitan monolaurate,
e) Drying the polymer gel to obtain a polymer in powder form,
f) Grinding and sifting the powder.