公开(公告)号：US20180127517A1

公开(公告)日：2018-05-10

申请号：US15799589

申请日：2017-10-31

申请人： PetroChina Company Limited

发明人： Jianhui LUO ,  Xinxiang ZHANG ,  Baoliang PENG ,  Pingmei WANG ,  Bin DING ,  Lipeng HE ,  Xiangfei GENG

IPC分类号： C08B15/00 ,  C08L51/02 ,  C08F251/02 ,  C08J7/12 ,  C08G77/04 ,  B01J31/30 ,  B01D71/34 ,  B82Y30/00

CPC分类号： C08B15/00 ,  B01D61/14 ,  B01D69/02 ,  B01D71/34 ,  B01J31/30 ,  B82Y30/00 ,  B82Y40/00 ,  C08B15/05 ,  C08F251/02 ,  C08G77/04 ,  C08G77/12 ,  C08J7/047 ,  C08J7/12 ,  C08J2301/02 ,  C08J2483/04 ,  C08J2483/05 ,  C08L51/02 ,  C08L83/04 ,  C08L1/00 ,  C08K5/01 ,  C08K5/56

摘要： The present disclosure relates to a hydrophobically modified nanocellulose crystal and a method for hydrophobic grafting modification of nanocellulose crystals, comprising the steps: mixing the nanocellulose crystals with a saturated alkane, and stirring the resultant at room temperature or under a heating condition; while stirring, adding in sequence a polymethylhydrosiloxane containing a silicon-hydrogen bond and a catalyst; continuously stirring to complete the dehydrogenation reaction, then obtaining a mixed solution; and filtering the mixed solution by a polyvinylidene fluoride membrane, then drying it to complete the hydrophobic modification. A —Si—O—C-chemical bonding is formed between the polymethylhydrosiloxane and the nanocellulose crystal in the method, enabling improvement of the hydrophobicity and water resistance of the nanocellulose crystal.

公开(公告)号：US20200208045A1

公开(公告)日：2020-07-02

申请号：US16691969

申请日：2019-11-22

申请人： PetroChina Company Limited

发明人： Xiangfei GENG ,  Bin DING ,  Jianhui LUO ,  Bo HUANG ,  Jianyong XIE ,  Pingmei WANG ,  Yang GAO ,  Baoliang PENG

IPC分类号： C09K8/60 ,  C07C309/49 ,  C07C303/06

摘要： The present invention discloses a N,N,N′,N′-tetradodecyl-substituted diphenyl ether sulfonate anionic Gemini surfactant and the synthesis method thereof. It has a structural formula of: and is prepared in a two-step reaction comprising: S1. subjecting 4,4′-diaminodiphenyl ether and bromododecane to an amine alkylation reaction to obtain N,N,N′,N′-tetradodecyl-substituted diphenyl ether; and S2. sulfonating the N,N,N′,N′-tetradodecyl-substituted diphenyl ether with concentrated sulfuric acid to produce the target product, N,N,N′,N′-tetradodecyl-substituted diphenyl ether sulfonate. The surfactant of the present invention has a high surface activity and can be synthesized with a simple procedure under mild reaction conditions, and can be easily separated and purified. The surfactant of the present invention is promising in applications for alkaline/surfactant in tertiary oil recovery, for polymer/surfactant binary compound flooding, alkaline/surfactant/polymer tertiary compound flooding, microemulsion emulsifier, and the like, and may also be compounded with common surfactants to lower the cost, thereby enabling its application in a large scale.

公开(公告)号：US20200206706A1

公开(公告)日：2020-07-02

申请号：US16691946

申请日：2019-11-22

申请人： PetroChina Company Limited

发明人： Bin DING ,  Xiangfei GENG ,  Jianhui LUO ,  Yang SHI ,  Bo HUANG ,  Jianyong XIE ,  Yang GAO ,  Pingmei WANG ,  Baoliang PENG

IPC分类号： B01F17/00

摘要： The invention discloses a core-shell structured non-ionic nanoemulsion system and the preparation and use thereof. The system comprises a non-ionic gemini surfactant, an oil phase material, a solubilizer, and water; wherein the microemulsion has a core-shell structure, with the outer shell being the non-ionic Gemini surfactant, and the inner core being the oil phase material. The non-ionic Gemini surfactant is di(octylphenol polyoxyethylene ether)-substituted dicarboxylic acid diphenyl ether having the structural formula: The non-ionic nanoemulsion system of the present invention is homogeneous and transparent, and has a spherical core-shell structure with nanometer-sized (3-40 nm) droplets, narrow particle size distribution, low tendency to agglomerate, good stability, and both an ultra-low interfacial tension and the ability to reduce viscosity of crude oil.

公开(公告)号：US20200208044A1

公开(公告)日：2020-07-02

申请号：US16691942

申请日：2019-11-22

申请人： PetroChina Company Limited

发明人： Xiangfei GENG ,  Bin Ding ,  Jianhui LUO ,  Bo HUANG ,  Jianyong XIE ,  Pingmei WANG ,  Yongcan PENG ,  Baoliang PENG

IPC分类号： C09K8/60 ,  C07C69/76 ,  C07C67/08

摘要： The invention discloses a nonionic Gemini surfactant, (octylphenol polyoxyethylene ether disubstituted) dicarboxylic acid diphenyl ether and its synthesis method, which nonionic Gemini surfactant has a structural formula of: and is prepared by a two-step reaction: S1, diphenyl ether 4,4′-dicarboxylic acid is subjected to an acyl chlorination reaction to obtain diphenyl ether 4,4′-dicarbonyl dichloride; S2, diphenyl ether 4,4′-dicarbonyl dichloride is subjected to an esterification reaction with octylphenol polyoxyethylene ether (OP-10) to obtain the target product (octylphenol polyoxyethylene ether disubstituted) dicarboxylic acid diphenyl ether. The surfactant of the present invention is expected to be applied in tertiary oil recovery as an alkali/surfactant, in polymer/surfactant binary composite flooding, in alkali/surfactant/polymer ternary composite flooding, as a microemulsion emulsifier and the like, and it can also be compounded with a common surfactant to reduce the use cost, and thus create conditions for its large-scale application.

公开(公告)号：US20200208040A1

公开(公告)日：2020-07-02

申请号：US16691944

申请日：2019-11-22

申请人： PetroChina Company Limited

发明人： Bin DING ,  Xiangfei GENG ,  Jianhui LUO ,  Yang SHI ,  Jianyong XIE ,  Bo HUANG ,  Yang GAO ,  Pingmei WANG ,  Baoliang PENG

IPC分类号： C09K8/584

摘要： The invention discloses a core-shell structured anionic nano microemulsion system, and preparation and application thereof. The system comprises an anionic Gemini surfactant, an oil phase material, a solubilizer and water; wherein the microemulsion has a core-shell structure, with the outer shell being an anionic Gemini surfactant, and the inner core being an oil phase material. The anionic Gemini surfactant is N,N,N′,N′-dodecyl tetrasubstituted diphenyl ether sulfonate having the structural formula: The anionic nano-microemulsion system of the present invention is homogeneous and transparent, has a spherical core-shell structure, has a nanometer size (3 to 40 nm) as droplets, has a narrow particle size distribution, is not easy to agglomerate, has good stability, and has an ultra-low interfacial tension and a capability of reducing viscosity of crude oil.