|
<< Back
JKTAN NG & JKTAN NG - LIQ.
Jktan NG - liq. / Jktan NG Powder is based on
aromatic sulphonic acids and aliphatic dicarboxylic
acids |
|
|
|
Light fastness |
: |
Very
good |
|
Yellowing |
: |
Leathers and finished products are stable to storage. |
|
Astringency |
: |
Low,
thus excellent grain smoothness and fineness. |
|
Stability to electrolytes |
: |
Very
good, suitable for all procedures, e.g. in compact
methods and chromium baths. |
|
Effect on leather colour |
: |
Slight shade weakening. |
|
Leveling effect |
: |
Good
dyeability. |
|
Electrolyte content |
: |
Very
low, thus low effluent pollution. |
|
Storage stability |
: |
1
year (at room temperature) Highly concentrated,
technical-grade liquid products can form a slight
sediment.
The
two products differ from one another only in the form
they are delivered and in their concentration and
therefore only Jktan NG is referred to in following
text. |
|
Benefits |
: |
Jktan
is a lightfast neutralizing agent with mellow retanning
effect and high affinity for acids. It is noted for a
mild, penetrating deacidifying effect.
Jktan
NG does not loosen the grain during neutralization and
no coarsening of the grain occurs during subsequent
application of vegetable and synthetic tanning agents.
Jktan NG helps to disperse the retanning agent and thus
distribute it more evenly in the leather.
Jktan NG has a leveling action with only minimal
shade-weakening effect. With its anionic charge and its
buffer effect, Jktan NG improves the penetration of
anionic dyes.
Owning to its acid-binding properties, Jktan NG has a
basifying effect on chromium slats. With its high
buffer properties, Jktan NG can be used without risk in
chromium baths. |
|
Application |
: |
In
general, 1-4% Jktan NG (calculated on the shaved weight)
is applied in the neutralizing stage Jktan NG can be
applied in combination with common neutralizing agents
like sodium bicarbonate, when higher pH values are
required. In Powder form, the quantity of Jktan NG used
will be reduced substantially. |
