IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0594558
(2008-04-03)
|
등록번호 |
US-8637622
(2014-01-28)
|
우선권정보 |
FR-07 02497 (2007-04-05) |
국제출원번호 |
PCT/EP2008/054024
(2008-04-03)
|
§371/§102 date |
20091223
(20091223)
|
국제공개번호 |
WO2008/125512
(2008-10-23)
|
발명자
/ 주소 |
- Monin, David
- Labeau, Marie-Pierre
- Vuong, Chi-Thanh
- Cadix, Arnaud
- Bendejacq, Denis
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
78 |
초록
▼
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 rel
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.
대표청구항
▼
1. A process for the preparation of a copolymer comprising: a) preparing an aqueous fluid B comprising: at least one ethylenically unsaturated monomer B, wherein monomer B is hydrophobic (Bphobic) and/or amphiphilic (Bamphi), andoptionally a surfactant,wherein, if the monomer B is a hydrophobic mono
1. A process for the preparation of a copolymer comprising: a) preparing an aqueous fluid B comprising: at least one ethylenically unsaturated monomer B, wherein monomer B is hydrophobic (Bphobic) and/or amphiphilic (Bamphi), andoptionally a surfactant,wherein, if the monomer B is a hydrophobic monomer Bphobic, then the aqueous fluid B comprises a surfactant,wherein monomer B is included in micelles comprising surfactant and/or monomer Bamphi,wherein: the number of monomers in the micelles is greater than 2.6;the ratio in moles of the surfactant to the monomer B is less than or equal to 28; and/orthe ratio by weight of the surfactant, if present, to the monomer B is less than or equal to 30b) carrying out a polymerization by combining in an aqueous medium: the micelles of the aqueous fluid B,monomers AZ or AZ precursor and optionally other hydrophilic monomers Aother dissolved in an aqueous medium,wherein: monomers AZ comprise a betaine group, said betaine group comprising a cationic group and an anionic group,monomers AZ precursor comprise a precursor capable of forming betaine groups AZ by a reaction subsequent to the polymerization, anda source of free radicals; andc) optionally converting AZ precursor to betaine groups AZ if present. 2. The process of claim 1, wherein the combined molar ratio of monomers AZ, AZ precursor, and Aother to monomers B ranges from 1/99 to 99.9/0.1. 3. The process of claim 1, wherein the molar ratio of the monomers AZ or AZ precursor to monomers Aother ranges from 99/1 to 1/99. 4. The process of claim 1, wherein the betaine monomer AZ comprises: alkylsulfonates or phosphonates of dialkylammonioalkyl acrylates, methacrylates, acrylamides, or methacrylamides,heterocyclic betaine monomers,alkylsulfonates or phosphonates of dialkylammonioalkylallylics,alkylsulfonates or phosphonates of dialkylammonioalkylstyrenes,betaines resulting from ethylenically unsaturated anhydrides or dienes,phosphobetaines of formulae: or mixtures thereof. 5. The process of claim 1, wherein the betaine monomer AZ comprises: or mixtures thereof. 6. The process of claim 1, wherein monomer Aother comprises neutral monomers AN, cationic or potentially cationic monomers AC, anionic or potentially anionic monomers AA, or mixtures thereof. 7. The process of claim 6, wherein monomer AN comprises: hydroxyalkyl esters of α,β-ethylenically unsaturated acids,α,β-ethylenically unsaturated amides,α,β-ethylenically unsaturated monomers comprising a water-soluble polyoxyalkylene segment,vinyl alcohol,vinyllactams,α,β-ethylenically unsaturated ureido monomers, ormixtures thereof. 8. The process of claim 6, wherein monomer AN comprises: hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate, hydroxypropyl methacrylate, or glycerol monomethacrylate;acrylamide, methacrylamide, N-methylolacrylamide, dimethylacrylamide, or dimethylmethacrylamide;vinylpyrrolidone;the methacrylamido of 2-imidazolidinone ethyl, ormixtures thereof. 9. The process of claim 6, wherein monomer AA comprises: monomers comprising at least one carboxyl functional group or their water-soluble salts;monomers comprising at least one sulfate or sulfonate functional group or a corresponding acid functional group;monomers comprising at least one phosphonate or phosphate functional group or a corresponding acid functional group; ormixtures thereof. 10. The process of claim 6, wherein monomer AA comprises: acrylic acid, acrylic anhydride, methacrylic acid, methacrylic anhydride, maleic acid, maleic anhydride, fumaric acid, itaconic acid, N-methacryloylalanine, N-acryloylglycine, or their water-soluble salts;2-sulfooxyethyl methacrylate, vinylbenzenesulfonic acid, allylsulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, sulfoethyl acrylate or methacrylate, sulfopropyl acrylate or methacrylate, and their water-soluble salts;vinylphosphonic acid or ethylenically unsaturated phosphate esters; ormixtures thereof. 11. The process of claim 1, wherein hydrophobic monomer Bphobic comprises vinylaromatic monomers,vinyl halides,vinylidene halides,C1-C30 alkyl esters of α,β-monoethylenically unsaturated acids,carboxylic acid vinyl esters,carboxylic acid allyl esters,α,β-monoethylenically unsaturated nitriles comprising from 3 to 12 carbon atoms,α-olefins,conjugated dienes, ormixtures thereof. 12. The process of claim 11, wherein hydrophobic monomer Bphobic comprises: styrene, α-methylstyrene, para-chloromethylstyrene, or vinyltoluene;vinyl chloride or vinylidene chloride;methyl acrylate, ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, isooctyl acrylate, lauryl acrylate, isodecyl acrylate, stearyl acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, 2-ethylhexyl methacrylate, isooctyl methacrylate, lauryl methacrylate, isodecyl methacrylate, or stearyl methacrylate;vinyl acetate, allyl acetate, vinyl propionate, allyl propionate, vinyl versatate, allyl versatate, vinyl stearate, or allyl stearate;acrylonitrile or methacrylonitrile; ormixtures thereof. 13. The process of claim 1, wherein amphiphilic monomer Bamphi comprises: acrylates or methacrylates of polyethoxylated and/or polypropoxylated C3-C30 aliphatic alcohols, wherein the aliphatic portion is optionally substituted by one or more hydroxyl groups;acrylates or methacrylates of polyethoxylated and/or polypropoxylated polystyrylphenols;acrylates or methacrylates of polyethoxylated and/or polypropoxylated alkylphenols; ormixtures thereof. 14. The process of claim 1, wherein aqueous fluid B comprises an anionic surfactant, nonionic surfactant, or mixtures thereof. 15. The process of claim 14, wherein the surfactant comprises an alkyl sulfate, an alkylsulfonate, an alkylaryl sulfate, an alkylarylsulfonate, or mixtures thereof. 16. The process of claim 1, wherein the step of carrying out a polymerization additionally comprises: b1) preparing an aqueous solution A comprising the monomers AZ or AZ precursor and optionally a salt,b2) combining at least a portion of the aqueous solution A, at least a portion of the aqueous fluid B, and at least a portion of the source of free radicals,b3) carrying out polymerization by generating free radicals in the reaction mixture, optionally with heating, andb4) combining any remaining portions of aqueous solution A, aqueous fluid B, and/or the source of free radicals, all at once or continuously. 17. The process of claim 1, wherein the step of carrying out polymerization is semi-batchwise. 18. The process of claim 17, further comprising: i) preparing aqueous fluid B;ii) preparing aqueous solution A;iii) mixing the aqueous fluid B and the aqueous solution A to obtain a premix;iv) preparing a vessel heel in a reactor, the vessel heel comprising a portion of the premix and the source of free radicals;v) initiating the polymerization by heating;vi) adding continuously the remaining premix while heating; andvii) adding the source of free radicals, in all or in part, into the premix or into the vessel heel, wherein any remaining portion of the source of free radicals is optionally added continuously during stage vi. 19. The process of claim 17, wherein the process further comprises: i) preparing aqueous fluid B;ii) preparing aqueous solution A;iii) mixing the aqueous fluid B and the aqueous solution A to obtain a premix;iv) preparing a vessel heel in a reactor, the vessel heel comprising water and optionally surfactant;v) adding the premix continuously while heating; andvi) adding the source of free radicals, it all or in part, into the premix or separately into the vessel heel, wherein any remaining portion of the source of free radicals is optionally added continuously. 20. A method of thickening and/or modifying the rheology of an aqueous composition, comprising adding a copolymer made by the process of claim 1 to said aqueous composition. 21. The method of claim 20, wherein the aqueous composition comprises a saline composition comprising at least 35 g/L of a salt, or a composition based on seawater or brine that exhibits an ionic strength of at least 0.7 mol/L. 22. The method of claim 20, wherein the aqueous composition is adapted for use as: a fluid for the extraction of oil and/or gas;a fluid for civil engineering, for excavation, and/or for digging operations;a household care composition; ora cosmetic composition. 23. The method of claim 22, wherein the aqueous composition is a fluid adapted for the extraction of oil and/or gas comprising: a drilling fluid,a completion fluid,a fracturing fluid,a gravel packing fluid,a production fluid, oran enhanced oil recovery fluid.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.