Flux composition and techniques for use thereof
US9579738B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2011 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | Jan 14, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K35/362
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to flux compositions. One composition comprises an activator, a medium-viscosity solvent being a polymer, and a high-viscosity solvent being a copolymer containing first monomers and second monomers. Another composition comprises an activator, and a high-viscosity solvent comprising a copolymer containing first monomers and second monomers. Another composition comprises an activator of 6-12 percent by weight of glutaric acid, pimelic acid, tartaric acid, or mixtures thereof, and a medium-viscosity solvent of 88-94 percent by weight comprising a polymer with hydroxyl end groups. Another composition comprises an activator in a liquid state comprising poly(ethylene glycol)-diacid, and a medium-viscosity solvent comprising a polymer with hydroxyl end groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.