公开(公告)号：US11964871B2

公开(公告)日：2024-04-23

申请号：US16097227

申请日：2017-04-20

Applicant: Stella Chemifa Corporation

Inventor： Akira Ishimaru ,  Yoshinori Sato ,  Hironori Matsushita ,  Kazutaka Hirano ,  Tetsuo Nishida

IPC: H01B1/00 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/158 ,  C01B32/174 ,  H01B1/04 ,  H01B5/14 ,  H01B13/00

CPC classification number: C01B32/174 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/158 ,  H01B5/14 ,  H01B13/00 ,  C01B2202/02 ,  C01B2202/22 ,  C01P2004/13 ,  C01P2004/64

Abstract: To provide a novel immobilized product in which a carbon material and/or a silicon material is/are immobilized on a base material surface by a chemical bond via a linking group, and a method for producing the same. The immobilized product is an immobilized product in which a carbon material is immobilizing on a surface of a base material, wherein the carbon material is chemically bonded on the surface of the base material via a linking group, and the linking group is at least one selected from the group consisting of a —NH group, a —NH—R1—NH group, a —SO group, a R2 group, a —O—R3—O group, and a R4 group (in which the R1 to R4 each independently represent at least one selected from the group consisting of a chain alkyl group, a cyclic alkyl group, a chain alkenyl group, a cyclic alkenyl group, a chain alkynyl group, etc.).

公开(公告)号：US20160090306A1

公开(公告)日：2016-03-31

申请号：US14419071

申请日：2014-06-06

Applicant: STELLA CHEMIFA CORPORATION

Inventor： Sojiro Kon ,  Tetsuo Nishida

IPC: C01B25/455

CPC classification number: C01B25/455

Abstract: Provided is a method for producing a difluorophosphate, which can simply and easily produce a high-purity difluorophosphate in an industrially advantageous manner. The method includes steps of: reacting an aqueous hydrofluoric acid solution with an oxyhalide of phosphorous (except phosphoric trifluoride) to produce a crude difluorophosphoric acid; reacting the crude difluorophosphoric acid with a halide of an alkali metal, an alkaline earth metal, aluminum or an onium to produce a difluorophosphate in the crude difluorophosphoric acid; and heating and drying the crude difluorophosphoric acid containing the difluorophosphate to distill away the crude difluorophosphoric acid, or precipitating the difluorophosphate in the crude difluorophosphoric acid by crystallization, subsequently separating the difluorophosphate by solid-liquid separation, and further distilling away the crude difluorophosphoric acid contained in the difluorophosphate after solid-liquid separation.

Abstract translation: 本发明提供可以简单且容易地以工业上有利的方式制备高纯度二氟磷酸盐的二氟磷酸盐的制造方法。 该方法包括以下步骤：使氢氟酸水溶液与磷的卤氧化物（除了三氟化磷）反应以产生粗二氟磷酸; 使粗二氟磷酸与碱金属，碱土金属，铝或鎓的卤化物反应，在粗二氟磷酸中产生二氟磷酸盐; 并加热干燥含有二氟磷酸的粗二氟磷酸，蒸出粗二氟磷酸，或通过结晶沉淀粗二氟磷酸中的二氟磷酸盐，随后通过固液分离分离出二氟磷酸盐，进一步蒸馏除去含二氟磷酸的粗二氟磷酸 在固液分离后的二氟磷酸盐中。

公开(公告)号：US11965123B2

公开(公告)日：2024-04-23

申请号：US17442653

申请日：2020-03-19

Applicant: STELLA CHEMIFA CORPORATION

Inventor： Hiroaki Takatori ,  Shinya Kumazawa ,  Tetsuya Arakawa ,  Tetsuo Nishida

IPC: C09K11/61 ,  C01B33/10 ,  C09K11/02

CPC classification number: C09K11/617 ,  C01B33/103 ,  C09K11/025 ,  C01P2002/54 ,  C01P2004/80

Abstract: A red phosphor that has optical characteristics and durability under high-temperature and high-humidity environments, and a method for producing the same. The red phosphor includes a Mn-activated complex fluoride represented by the following general formula (1) and bismuth:

A2MF6:Mn4+  (1)

wherein A represents at least one alkali metal element selected from the group consisting of lithium, sodium, potassium, rubidium and cesium, and M represents at least one tetravalent element selected from the group consisting of silicon, germanium, tin, titanium, zirconium and hafnium.

公开(公告)号：US11180515B2

公开(公告)日：2021-11-23

申请号：US17010611

申请日：2020-09-02

Applicant: STELLA CHEMIFA CORPORATION

Inventor： Toshitaka Sakaguchi ,  Sojiro Kon ,  Yoshifumi Katsura ,  Masashi Yamamoto ,  Tetsuo Nishida

IPC: C07F9/11 ,  H01M10/054 ,  H01M10/0567 ,  C07F9/09 ,  H01M10/052 ,  H01G11/64 ,  H01M10/0568 ,  C07F9/12 ,  C07H15/252 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0569

Abstract: A non-aqueous electrolytic solution includes a phosphoric acid diester salt, which can suppress deterioration of charge-discharge characteristics of a power storage element, and can suppress the rise in internal resistance after storage at high temperature. The phosphoric acid diester salt is represented by the following chemical formula (1): in which Mn+ represents a hydrogen ion, an alkali metal ion, an alkali earth metal ion, an aluminum ion, a transition metal ion, or an onium ion, R1 and R2 are different from each other and represent a hydrocarbon group having 1 to 10 carbon atoms, or a hydrocarbon group having 1 to 10 carbon atoms and having at least one of a halogen atom, a heteroatom, and 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：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.