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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10316248 B1

PDFFull Text
Date of Patent:
Jun. 11, 2019

Filed:

Jan. 15, 2015

Hexafluoromanganate (iv), complex fluoride phosphor, and methods respectively for producing said products

Applicant:

Shin-etsu Chemical Co., Ltd., Tokyo, JP;

Inventors:

Masami Kaneyoshi, Echizen, JP;

Masatoshi Ishii, Echizen, JP;

Assignee:

SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Matthew E Hoban

Int. Cl.
CPC ...
C09K 11/67 (2006.01); C09K 11/61 (2006.01); B01J 19/08 (2006.01); C01G 45/00 (2006.01); C01G 45/06 (2006.01); C01G 19/00 (2006.01); C01G 23/00 (2006.01); C01G 25/00 (2006.01); C01G 27/00 (2006.01); C01B 33/10 (2006.01); C01G 17/00 (2006.01); C25B 1/24 (2006.01);
U.S. Cl.
CPC ...
C09K 11/675 (2013.01); B01J 19/088 (2013.01); C01B 33/10 (2013.01); C01G 17/006 (2013.01); C01G 19/006 (2013.01); C01G 23/002 (2013.01); C01G 25/006 (2013.01); C01G 27/006 (2013.01); C01G 45/006 (2013.01); C01G 45/06 (2013.01); C09K 11/616 (2013.01); C09K 11/617 (2013.01); C25B 1/245 (2013.01); B01J 2219/0809 (2013.01); B01J 2219/0877 (2013.01); C01P 2002/50 (2013.01); C01P 2002/54 (2013.01); C01P 2002/72 (2013.01); C01P 2004/51 (2013.01); C01P 2004/61 (2013.01); C01P 2006/80 (2013.01);
Abstract

The present invention relates to a method for producing a hexafluoromanganate(IV), said method being characterized by comprising: inserting an anode and a cathode into a reaction solution that contains a compound containing manganese having an atomic valence of less than 4 and/or manganese having an atomic valence of more than 4 and hydrogen fluoride; and then applying an electric current having an electric current density of 100 to 1000 A/mbetween the anode and the cathode. According to the present invention, it becomes possible to produce a hexafluoromanganate(IV) in which the content ratio of manganese having an atomic valence of 4 is high and the contamination with oxygen is reduced and which has high purity. When a complex fluoride red phosphor is produced using the hexafluoromanganate(IV) as a raw material, the phosphor produced has high luminescence properties, particularly high internal quantum efficiency.

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