Quote Originally Posted by Roger Koh View Post
>>> You've made it clear they are non-polar

Correction, products mentioned are polars – behaves like magnet – like poles repels and unlike poles repels.
At the molecular level it hydrogen bond like water H20.
The fatliquor is polar, yes, but it includes ingredients such as fat and oil, which are non-polar. If fat and oil is non-polar how is it hydrogen bonding to the leather protein? Is the emulsifier what is binding, or the added water (which contains hydrogen)?