公开(公告)号：EP3950983A1

公开(公告)日：2022-02-09

申请号：EP20784202.2

申请日：2020-03-27

申请人： Senju Metal Industry Co., Ltd.

发明人： KAWASAKI Hiroyoshi ,  SHIRATORI Masato ,  KURASAWA Yoko ,  ONITSUKA Motohiro ,  KITAZAWA Kazuya ,  TAKAKI Akiko

IPC分类号： C22C13/00 ,  C22C13/02 ,  B23K35/14 ,  B23K35/26 ,  B23K35/363

摘要： Provided are: a resin composition for soldering use, which has excellent compatibility with a rosin-based resin and excellent temperature cycle reliability and is therefore suitable for a flux for soldering use; and a soldering composition and a flux cored solder, in each of which the resin composition for soldering use is used. The resin composition for soldering use comprises: an acrylic resin having a number average molecular weight of 500 or more and less than 2000 as determined by mass spectrometry using a time-of-flight mass spectrometer; and a rosin-based resin, a polyethylene-based resin or a polypropylene-based resin. Alternatively, the resin composition for soldering use comprises: an acrylic resin having a weight average molecular weight of 500 or more and less than 2000 as determined by mass spectrometry using a time-of-flight mass spectrometer; and a rosin-based resin, a polyethylene-based resin or a polypropylene-based resin.

公开(公告)号：EP3741498A1

公开(公告)日：2020-11-25

申请号：EP19741583.9

申请日：2019-01-16

申请人： Senju Metal Industry Co., Ltd

发明人： HASHIMOTO Yutaka ,  TAKAGI Kazuyori ,  NAGAI Tomoko ,  MIYAGI Nanako ,  KITAZAWA Kazuya ,  TAKAKI Akiko ,  MINEGISHI Kazuhiro ,  OTSUKI Teppei ,  HORIKOSHI Rina ,  TSUDA Ryuichi ,  KAWASAKI Hiroyoshi ,  SHIRATORI Masato

IPC分类号： B23K35/363 ,  B23K35/26 ,  C22C13/00

摘要： Provided are flux in which solder wettability is improved, and a solder paste in which the flux is used. The flux contains 0.5-20.0 wt% of a (2-carboxyalkyl)isocyanurate adduct, and 5.0-45.0 wt% of a rosin, and furthermore contains a solvent. The (2-carboxyalkyl)isocyanurate adduct is a mono(2-carboxyalkyl)isocyanurate adduct, a bis(2-carboxyalkyl)isocyanurate adduct, a tris(2-carboxyalkyl)isocyanurate adduct, or a combination of two or more of these.