What is PaintBlock®?

What is PaintBlock®?
At first glance the only difference appears to be the green colour of FrogTape®. Even if the tape seems the same to handle as simple masking tape, FrogTape® has one unique feature to offer in contrast to traditional painter’s tape:
the aforementioned patented PaintBlock®-Technology, which prevents paint bleed and therefore avoids uneven edges.  PaintBlock® is a super-absorbent polymer. If the polymer comes into contact with water-based paints or lacquers, it instantly gels to form a micro-barrier. This prevents paint bleed and ensures razor-sharp edges.