US 11,833,620 B2
Flux and solder paste
Yutaka Hashimoto, Soka (JP); Kazuyori Takagi, Inzai (JP); Tomoko Nagai, Yashio (JP); Nanako Miyagi, Nagareyama (JP); Kazuya Kitazawa, Kuki (JP); Akiko Takaki, Koshigaya (JP); Kazuhiro Minegishi, Koshigaya (JP); Teppei Otsuki, Soka (JP); Rina Horikoshi, Tokyo (JP); Ryuichi Tsuda, Tokyo (JP); Hiroyoshi Kawasaki, Tokyo (JP); and Masato Shiratori, Shimotsuke (JP)
Assigned to SENJU METAL INDUSTRY CO., LTD., Tokyo (JP)
Appl. No. 16/957,537
Filed by SENJU METAL INDUSTRY CO., LTD., Tokyo (JP)
PCT Filed Jan. 16, 2019, PCT No. PCT/JP2019/001105
§ 371(c)(1), (2) Date Jun. 24, 2020,
PCT Pub. No. WO2019/142826, PCT Pub. Date Jul. 25, 2019.
Claims priority of application No. 2018-005033 (JP), filed on Jan. 16, 2018; application No. 2019-004692 (JP), filed on Jan. 15, 2019; and application No. 2019-004696 (JP), filed on Jan. 15, 2019.
Prior Publication US 2021/0060715 A1, Mar. 4, 2021
Int. Cl. B23K 35/36 (2006.01); B23K 35/02 (2006.01); B23K 35/26 (2006.01); C08K 5/3492 (2006.01); C08L 93/04 (2006.01); C22C 13/00 (2006.01)
CPC B23K 35/3613 (2013.01) [B23K 35/025 (2013.01); B23K 35/262 (2013.01); C08K 5/34924 (2013.01); C08L 93/04 (2013.01); C22C 13/00 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A flux, comprising:
5.0 wt % to 25.0 wt % of an acrylic resin;
2.0 wt % to 15.0 wt % of tris(2-carboxyethyl) isocyanurate;
2.0 wt % to 30.0 wt % of rosin;
5.0 wt % to 25.0 wt % of at least one acid component selected from a group consisting of a dimer acid derived from oleic acid and linoleic acid, a trimer acid derived from oleic acid and linoleic acid, a hydrogenated dimer acid obtained by adding hydrogen to a dimer acid derived from oleic acid and linoleic acid, and a hydrogenated trimer acid obtained by adding hydrogen to a trimer acid derived from oleic acid and linoleic acid; and
a solvent,
wherein a ratio of tris(2-carboxyethyl) isocyanurate to the at least one acid component is 0.1 to 0.4.