By one understands:

In the building of concrete

1. Distance of lime deposits, stopping flowering or impurities on concrete surfaces by the use of diluted acid solutions (e.g. Hydrochloric acid).
2. Procedure with the production of exposed concrete areas: One uses diluted acid solutions, in order to remove the highest hardened cement paste layer. This procedure leads concrete, which can be achieved also by employment of the sand jet technology on concrete surfaces to sandstone-similar surfaces.
3. Measure for the improvement of the adhesion of painting with strongly kalkhaltigen surfaces

In the building of metals

To improve pretreatment of galvanized surfaces ("“zinc reason"”) around the adhesive strength from painting and lacquers to.

See also: Pickle

In the textile technology/refinement

With the completion neutralization (chemistry) of a colouring with e.g., reactive, sulfur, and Naphtol coloring materials.

Usually here organic acids become like e.g. Vinegar or formic acid assigned. (Exception with Naphtolfarbstoffe, here hydrochloric acid)

Quantity required with acetic acid (60%) 1-2 g/l

The is to that extent important, in order to strengthen the substrate coloring material connection (reactive coloring materials), in order to later prevent one to colour envelope (Nachoxidation) (sulfur coloring materials) and around ungekuppelte Diazoverbindungen, decomposition products and metal hydroxides to solve (Naphtolfarbstoffe)

See also: Color

Articles in category "Absrn"

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