Flux for resin flux cored solder, flux for flux coated solder, resin flux cored solder and flux coated solder

Patent metadata

Field	Value
Publication number	US-10265808-B2
Application number	US-201514971072-A
Country	US
Kind code	B2
Filing date	Dec 16, 2015
Priority date	Dec 25, 2014
Publication date	Apr 23, 2019
Grant date	Apr 23, 2019

Abstract

A flux for a resin flux cored solder contains 30% or more by mass but 80% or less by mass rosin ester and 5% or more by mass but 15% or less by mass activator. The total content ratio of base materials including the rosin ester is preferably equal to or more than 85% by mass but equal to or less than 95% by mass.

First claim

What is claimed is:

1. A flux for a resin flux cored solder, comprising:
30% or more by mass but 80% or less by mass rosin ester; and
5% or more by mass but 15% or less by mass activator;
wherein the total content ratio of base materials including said rosin ester is equal to or more than 85% by mass but equal to or less than 95% by mass based on the total amount of the flux, and
wherein said base materials consist of said rosin ester in solid form at ambient temperature and one or more other resins selected from the group consisting of hydrogenated rosin, acid modified rosin, polymerized rosin, high molecular compound, and combinations thereof.

2. A resin flux cored solder wherein a wire solder is filled with a flux,
said flux comprising:
30% or more by mass but 80% or less by mass rosin ester; and
5% or more by mass but 15% or less by mass activator;
wherein the total content ratio of base materials including said rosin ester is equal to or more than 85% by mass but equal to or less than 95% by mass based on the total amount of the flux, and
wherein said base materials consist of said rosin ester in solid form at ambient temperature and one or more other resins selected from the group consisting of hydrogenated rosin, acid modified rosin, polymerized rosin, high molecular compound, and combinations thereof.

3. A flux for a flux coated solder, comprising:
30% or more by mass but 80% or less by mass rosin ester; and
5% or more by mass but 15% or less by mass activator;
wherein the total content ratio of base materials including said rosin ester is equal to or more than 85% by mass but equal to or less than 95% by mass based on the total amount of the flux, and
wherein said base materials consist of said rosin ester in solid form at ambient temperature and one or more other resins selected from the group consisting of hydrogenated rosin, acid modified rosin, polymerized rosin, high molecular compound, and combinations thereof.

4. A flux coated solder wherein a wire solder is coated with a flux,
said flux comprising:
30% or more by mass but 80% or less by mass rosin ester; and
5% or more by mass but 15% or less by mass activator;
wherein the total content ratio of base materials including said rosin ester is equal to or more than 85% by mass but equal to or less than 95% by mass based on the total amount of the flux, and
wherein said base materials consist of said rosin ester in solid form at ambient temperature and one or more other resins selected from the group consisting of hydrogenated rosin, acid modified rosin, polymerized rosin, high molecular compound, and combinations thereof.

Assignees

• Senju Metal Industry Co

Inventors

• ONITSUKA Motohiro
• Kurasawa Yoko
• Kugi Toshihisa
• Kawanago Hiroshi
• Tsuruta Kaichi

Classifications

• B23K35/3613 Primary

  Polymers, e.g. resins · CPC title

• H05K3/3489

  Composition of fluxes; Application thereof; Other processes of activating the contact surfaces · CPC title

• B23K35/362

  Selection of compositions of fluxes (B23K35/365, B23K35/368 take precedence) · CPC title

• B23K35/0261

  Rods, electrodes or wires · CPC title

• B23K35/3612 Primary

  with organic compounds as principal constituents · CPC title