ALUMINIUM FORMATES
We have different aluminium formate solutions as well as solid aluminium formate in our portfolio. A special feature of aluminium formate compared to many other aluminium compounds is the organic, biodegradable anion.
Examples of areas of application are:
- flocculation with a biodegradable anion, chloride-free and sulfate-free
- precipitating and fixing agents for the production of acid-free papers
- additive for catalyst productions
- tanning aid for the fur industry (white tanning)
- lacquer coagulation, detacking of lacquer suspensions
- raw material for chemical synthesis: aluminium source with an organic anion
Below you will find some further information about the application in paper production.
Precipitating and fixing agents for the production of acid-free papers
Aluminium formate increases opacity by improving sheet formation.
It is generally used for the production of neutral papers such as writing and printing papers, transparent and glassine papers, boards for self-adhesive postcards and index cards, laminate, offset, document papers or sealing boards.
Aluminium formate has a hydrophobic effect. Used alone, it does not achieve complete sizing, but the effect of the sizing agents, especially resin glues, is considerably increased by aluminium formate. When the paper web dries, most of the formic acid split off by hydrolysis evaporates. Insoluble neutral salts remain in the paper, which do not undergo further hydrolysis to form acid-reacting compounds. Almost neutrally reacting aluminium compounds remain in the paper, so that the pH value of the paper is relatively high.
Aluminium formate is especially suitable for the production of storage and heat resistant papers.