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(19) 

(12) EUROPEAN PATENT APPLICATION 

(43) Date of publication: 07.04.2021 Bulletin 2021/14 

(21) Application number: 20197630.5 

(22) Date of filing: 23.09.2020 

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN 

(30) Priority: 03.10.2019 JP 2019182995 

(51) Int Cl.: B23K 35/36 (2006.01) 

(71) Applicant: SENJU METAL INDUSTRY CO., LTD. Tokyo, 120-8555 (JP) 

(72) Inventor: MIZOWAKI, Toshio Tokyo, 1208555 (JP) 

(74) Representative: AWA Sweden AB Junkersgatan 1 582 35 Linköping (SE) 

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# (11) EP 3 800 003 A1 

(54) ROSIN MODIFIED PRODUCT, FLUX COMPOSITION, LIQUID FLUX, FLUX CORED SOLDER AND SOLDER PASTE 

(57) A rosin-modified product being a reactant of a rosin or a rosin derivative and an alkanolamine represented by a following Formula (1) 

<img src='content_image/884124.jpg'>

or being produced by a reaction of a rosin or a rosin derivative, an organic acid and an alkanolamine. 

