Patent ID: 9308604
Filing Date: 2016-04-12
CPC Classification: B23K,C22C

Claim Text:
1. A method for preventing tin whiskers in a lead-free solder, the method comprising the steps of: providing a first amount of lead-free tin solder; and mixing a second amount of polyhedral oligomeric silsesquioxane with the first amount of lead-free tin solder, wherein the first and second amounts are selected to provide a resulting composition containing about 90% to about 99% by weight of the lead-free tin solder based on the total weight of the resulting composition and about 1% to about 10% by weight of the polyhedral oligomeric silsesquioxane based on the total weight of the resulting composition, and wherein the polyhedral oligomeric silsesquioxane contains at least one mercaptopropyl group.