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.

Date of Patent:
Apr. 12, 2022

Filed:

Mar. 26, 2021
Applicant:

Senju Metal Industry Co., Ltd., Tokyo, JP;

Inventors:

Hiroaki Kawamata, Chiba, JP;

Hayato Kaise, Tokyo, JP;

Syuta Akatsuka, Tokyo, JP;

Kengo Ohta, Kanagawa, JP;

Sakie Okada, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 35/02 (2006.01); B23K 35/362 (2006.01); B23K 103/08 (2006.01); B23K 103/00 (2006.01);
U.S. Cl.
CPC ...
B23K 35/362 (2013.01); B23K 35/025 (2013.01); B23K 2103/08 (2018.08); B23K 2103/42 (2018.08); B23K 2103/54 (2018.08);
Abstract

Provided is flux containing rosin-based resin, a solvent, a thixotropic agent and an activator. The thixotropic agent includes any or both of hardened castor oil and bisamide-based thixotropic agent. The contents of the hardened castor oil and the bisamide-based thixotropic agent are respectively within the range of 4 wt. % or more and 10 wt. % or less and the range of 1 wt. % or more and 5 wt. % or less based on the total weight of the flux. The contents of the thixotropic agent are within the range of 5 wt. % or more and 15 wt. % or less based on the total weight of the flux. The activator includes hydrohalide, a halogenated aliphatic compound and an imidazole compound. The contents of the halogen in the flux are within the range of 9000 ppm or more and 50000 ppm or less.


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