The method described in the patent is one that has been known for years. Many authors such as Wall and Baker disclose subbing layers with gelatin in acetic acid and an organic solvent. If the gelatin does not fully dissolve, it can form a milky liquid which can be termed a dispersion. A dispersion is a mixture of a liquid and a solid, where the solid does not precipitate.


However, in photography, the terms dispersion and emulsion have become corrupt and are reversed and thus a dispersion may be an emulsion. It is hard to say.


These references are to the classic definitions of the two. If you reverse them then it is the photographic definition and this came about because the early workers either did not know what they had, or were not aware of the definitions.

In any event, I suspect you are discussing a classic mixture of two liquid materials which do not dissolve, and which form a single phase of one material with small droplets of the other material suspended in it. I will not use a classic term here due to possible confusion.

It is sufficient to say that this method has been used for over 100 years, and that Kaszuba must have claimed something unique.

I am glad that the Sodium Hydroxide method worked. Please take care as that solution is very strong and very dangerous. It could take the hide off of an elephant with no trouble at all. Use safety goggles when you use it and don't get any in your eyes.