innovative lightweight spackling compound that incorporates the characteristics of a primer
spackling and primer in one that hides repair after painting
"Engineered nanoparticles create a primer-like film on the surface, allowing the repair to be virtually invisible under dried paint, for professional-looking results without having to prime." (see link provided in Related Information field)
The product itself contains a label that reads "with Nanotechnology".
3M™ Press Release: New 3M™ Patch Plus Primer Revolutionizes Wall Repair and Painting