Precoat composition for organic solderability preservative
a preservative and organic technology, applied in the field of organic solderability preservative process, can solve the problems of reducing the conductivity of the gold contact surface, and achieve the effect of enhancing the solderability of the copper surfa
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
Problems solved by technology
Method used
Examples
Embodiment Construction
[0024] The present invention is directed to an improved protective coating system for coating copper metallurgy on printed wiring boards (PWB's) including copper pads and through holes.
[0025] In the present invention, a conventional azole-based OSP coating is improved by using a pre-treatment step, wherein the copper surfaces are contacted with a pre-treatment solution comprising an aliphatic carboxylic acid and preferably an amine before the OSP treatment. The inventors of the present invention have found that the use of the pretreatment composition of the invention enhances the final protective coating on the copper surfaces and provides a more uniform coating that also has a better appearance and color.
[0026] More particularly, the present invention is directed to a method of enhancing the solderability of a copper surface comprising the steps of:
[0027] a) contacting one or more copper surfaces with a pretreatment composition comprising a dilute solution of an aliphatic carbox...
PUM
Property | Measurement | Unit |
---|---|---|
Concentration | aaaaa | aaaaa |
Aliphatic | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com