公开(公告)号：US20210202991A1

公开(公告)日：2021-07-01

申请号：US16065721

申请日：2016-12-22

Applicant: STELLA CHEMIFA CORPORATION

Inventor： Toshitaka SAKAGUCHI ,  Yoshifumi KATSURA ,  Sojiro KON ,  Masashi YAMAMOTO ,  Tetsuo NISHIDA

IPC: H01M10/0567 ,  H01M10/0568 ,  H01M10/0525

Abstract: A nonaqueous electrolytic solution for a secondary battery exhibits excellent cycle characteristics even in a high temperature environment. The solution can be included in a secondary battery. The solution includes at least one component (A) represented by the following chemical formula: in which Mn+ represents at least one of a hydrogen ion, an alkali metal ion, an alkaline earth metal ion, an aluminum ion, a transition metal ion and an onium ion, X represents a halogen atom, R1 represents a hydrocarbon group having 1 to 20 carbon atoms, or a hydrocarbon group having 1 to 20 carbon atoms and having at least any one of a halogen atom, a heteroatom or an unsaturated bond, and n represents a valence.

公开(公告)号：US10112835B2

公开(公告)日：2018-10-30

申请号：US14419181

申请日：2014-06-06

Applicant: STELLA CHEMIFA CORPORATION

Inventor： Naoki Yahata ,  Tetsuo Nishida

IPC: C01B25/455 ,  B01J31/02 ,  H01M10/0567 ,  H01M10/0525

Abstract: Provided is a method for purifying a difluorophosphate, in which a difluorophosphate is purified to a high purity. The method includes a method for purifying a difluorophosphate, comprising bringing hydrogen fluoride into contact with a difluorophosphate containing an impurity and subsequently heating and drying the difluorophosphate, or bringing the hydrogen fluoride into contact with the difluorophosphate containing the impurity while heating and drying the difluorophosphate containing the impurity, thereby removing the impurity.

公开(公告)号：US20180026303A1

公开(公告)日：2018-01-25

申请号：US15548753

申请日：2016-01-21

Applicant: STELLA CHEMIFA CORPORATION

Inventor： Toshitaka SAKAGUCHI ,  Sojiro KON ,  Yoshifumi KATSURA ,  Tetsuo NISHIDA

IPC: H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0525

CPC classification number: H01M10/0567 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/0028 ,  Y02T10/7011

Abstract: A nonaqueous electrolytic solution for a secondary battery exhibits excellent cycle characteristics even in high-temperature environments. The solution INCLUDES at least one of boron complex salts, boric acid esters, acid anhydrides, cyclic carbonates having an unsaturated bond, cyclic carbonates having a halogen atom, cyclic sulfonic acid esters, and amines having an acetoacetyl group. A secondary battery having a positive electrode and a negative electrode makes use of this electrolytic solution.

公开(公告)号：US09624107B2

公开(公告)日：2017-04-18

申请号：US14418720

申请日：2014-06-06

Applicant: STELLA CHEMIFA CORPORATION

Inventor： Naoki Yahata ,  Tetsuo Nishida ,  Shuichi Minamigawa

IPC: C01B25/455 ,  H01G11/62 ,  H01M10/0568 ,  H01M10/052

CPC classification number: C01B25/455 ,  H01G11/62 ,  H01M10/052 ,  H01M10/0568

Abstract: Provided is a method for producing a difluorophosphate, which can easily and industrially advantageously produce a high-purity difluorophosphate. The method includes a step of producing a difluorophosphate in the fluorophosphoric acid solution by reacting hydrofluoric acid anhydride containing no solvent with an oxoacid and/or the like of phosphorous to produce a fluorophosphoric acid solution; a step of adding a hexafluorophosphate to the fluorophosphoric acid solution in the absence of respective halides, carbonates, borates, phosphates, hydroxides, and oxides of an alkali metal and the like; and a step of heating and drying the fluorophosphoric acid solution containing the difluorophosphate to distill away a fluorophosphoric acid, or a step of depositing the difluorophosphate in the fluorophosphoric acid solution by crystallization, subsequently separating the difluorophosphate by solid-liquid separation, and distilling away a fluorophosphoric acid contained in the difluorophosphate after the solid-liquid separation.

公开(公告)号：US08668851B2

公开(公告)日：2014-03-11

申请号：US13739967

申请日：2013-01-11

Applicant: Stella Chemifa Corporation

Inventor： Terunori Yamaguchi ,  Shinji Hashiguchi ,  Mitsuo Ueno

IPC: C04B40/00 ,  B27N3/00 ,  B29B17/00 ,  B29C47/00

CPC classification number: D01F11/04 ,  B29C67/0014 ,  D01D5/24 ,  D06M11/09 ,  D06M11/11 ,  D06M11/17 ,  D06M11/22

Abstract: It is intended to provide a method of producing a hollow construct, which may be in various shapes such as a fiber or a film as well as in various sizes and has chemical resistance, made of a fluorinated hydrocarbon polymer, a fluorinated carbon polymer or a polymer carrying a nitrogen-containing group, a silicon-containing group, an oxygen-containing group, a phosphorus-containing group or a sulfur-containing group having been introduced into the above-described polymer; and a hollow construct obtained by this method.

Abstract translation: 本发明提供一种中空构造体的制造方法，该中空构造体可以是各种形状，例如纤维或膜，以及各种尺寸，并且具有耐化学性，由氟化烃聚合物，氟化碳聚合物或 携带含氮基团的聚合物，含有导入到上述聚合物中的含氮基团，含氧基团，含磷基团或含硫基团; 和通过该方法获得的中空构造。

公开(公告)号：US20130187305A1

公开(公告)日：2013-07-25

申请号：US13739967

申请日：2013-01-11

Applicant: Stella Chemifa Corporation

Inventor： Terunori Yamaguchi ,  Shinji Hashiguchi ,  Mitsuo Ueno

IPC: B29C67/00

CPC classification number: D01F11/04 ,  B29C67/0014 ,  D01D5/24 ,  D06M11/09 ,  D06M11/11 ,  D06M11/17 ,  D06M11/22

Abstract: It is intended to provide a method of producing a hollow construct, which may be in various shapes such as a fiber or a film as well as in various sizes and has chemical resistance, made of a fluorinated hydrocarbon polymer, a fluorinated carbon polymer or a polymer carrying a nitrogen-containing group, a silicon-containing group, an oxygen-containing group, a phosphorus-containing group or a sulfur-containing group having been introduced into the above-described polymer; and a hollow construct obtained by this method.

Abstract translation: 本发明提供一种中空构造体的制造方法，该中空构造体可以是各种形状，例如纤维或膜，以及各种尺寸，并且具有耐化学性，由氟化烃聚合物，氟化碳聚合物或 携带含氮基团的聚合物，含有导入到上述聚合物中的含氮基团，含氧基团，含磷基团或含硫基团; 和通过该方法获得的中空构造。