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JKTAN
P
Pretanning agent for vegetable tanned leathers and
retanning agent for chrome tanned leathers. |
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Jktan
P is a pretanning agent for producing vegetable tanned
leathers. It accelerates penetration, exert a bleach
effect and produces a mellow handle. This product is
also suitable for retanning chrome tanned leathers. |
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Nature |
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Phenol Condensation Product. |
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Specification |
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Concentration 95% approximately |
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Properties |
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Jktan
P is a pretanning agent of medium astringency. It is
available as a yellowish powder. It tans hides readily
and evenly and ensures production of a tight, smooth,
undrawn grain and an attractive pale leather colour.
When
used as a retanning agent for chrome upper leather,
Jktan P imparts firmness, smoothness and resilience to
the grain, it bleaches the leather colour without
affecting the chrome leather character. The product is
also suitable for the intermediate treatment of chrome
leather to mitigate the astringency before retanning
with vegetable tannins. |
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Application |
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For
retanning chrome leathers, a light neutralization should
first be carried out, if necessary, to bring pH value in
the outer zones to 4 – 4.5. This is followed by
retannage with 1-2% of Jktan P. For an intermediate
treatment before a vegetable synthetic retannage, up to
3% of Jktan P is applied. As a result of this
treatment, the retanning agents will exert a milder
effect, so tat they can be added immediately to one
portion and a leather with a tight grain and good
buffing properties will be obtained.
Before they are pretanned with Jktan P, the pelts should
be delimed as thoroughly as possible. Pickling is
generally unnecessary. However, a very economic rapid
vegetable tanning process is based on pretannage with
Jktan P after a formic acid pickle. By this process, a
pale and smooth grain leather is obtained. |
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Safety |
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We
know of no ill effect resulting from the use of Jktan P
for the purpose for which it is intended and in
accordance with current practice. |
