| Appearance |
Brownish powder |
| Solubility in water |
Good |
| Resistance to chemicals |
Incompatible with reducing and
oxidizing agents, strong acids, alkalis and with other enzymes |
Storage of the product
Keep the packages sealed. The product must be stored in a fresh
environment, away from sources of heat. Avoid very prolonged storages.
Applications
and description of the product
Enzymes are biochemical substances that behave as catalysts toward specific
reactions. What makes the enzymes very interesting under a chemical point of
view is their high specificity or, in other words, their ability to attack
selectively a given substrate. Among the two traditional enzymes used in the
treatments of denim garments (amylase to hydrolyze starches and cellulase to
degrade in different ways cellulase) there is another enzyme that can be
employed to attack selectively the molecule that constitutes the blue indigo
color, resulting ineffective on other kind of dyes. Due to these
characteristics, this particular enzyme is a perfect candidate for new
applications, few of which are listed in the next page.
Super stone wash free from breaks
Since enzymes in Americos Laccase P do not attack the cellulase, it is
possible to get a "super stone wash" image on denim garments
without typical breaks that normally occurs after prolonged Stone Wash
treatments with pumice stones and cellulase enzymes. In this case it is
enough to execute a short cycle with Americos Laccase P after a standard
Stone Wash. Even the washing time get benefits from the usage of Americos
Laccase P, with reductions of about 20 to 30% as shown below.
Exemple
| CYCLE 1 |
CYCLE 2 |
Total duration |
| SUPER STONE WASH Treatment (100
min.) |
|
100 min. |
| STONE WASH Treatment (60 min.) |
Laccase P (15 min.) |
75 min. |
Maximization
of the contrast-elimination of the backstaining
The sharp amelioration of the denim garments' image is due to the
preferential attack of the enzyme on the color that has already been,
somewhat, altered during previous cycles (ex: stone wash). A cycle of few
minutes is enough to the product to degrade selectively the indigo color
redeposed on external yarns of the fabric, which after the Stone Wash are
always rather blue. In these circumstances the product will not affect in a
significant way the deeper area of the yarns, where the blue will retain its
original dark tone. The result is an extraordinary contrast blue-white, even
if "low contrast cellulase" were used in the stone wash bath.
A great advantage of Americos Laccase P is given by the possibility to use
an alternative path to highly contrasted denim image. The alternative path,
in this case, goes through the cheap "low contrast cellulase" in
place of the more expensive "high contrast cellulase". That should
not considered a paradox, since Americos Laccase P can, in few minutes,
eliminate all the disadvantages typically related with the use of low
contrast cellulase (flat image, heavy backstaining).
Medium contrast ecological bleach
Another application in which Laccase P excels is the ecological bleach of
denim garments. Thanks to its enzymatic nature, in fact, Laccase P is
particularly environmental friendly.
Under this point of view Laccase P over performs even reducing sugars,
which notoriously require large amounts of strong alkali and contribute in a
significant way to increase values of BOD and COD in waste water. From the
point of view of the fabric's image, it is interesting to notice how the
enzymatic bleach, differently from the usual bleaches, tends to preserve the
original contrast, thus avoiding an excessive "flattening" of the
image.
Bleach of elasticized fabrics
Americos Laccase P is virtually non substitutable when the target is to
conduct bleach on elasticized fabrics dyed with indigo blue. In this
particular case, in fact, traditional bleach agents can't be used since they
would affect irreversibly the elasticity. Americos Laccase P, as previously
stated, affects selectively only the indigo dye, leaving unaltered the
fibres regardless to their nature.
Stone wash and decolourization in a single bath
Enzymes of Americos Laccase P are not compatible with cellulase enzymes,
and that makes impossible their use in the stone wash bath. Anyway, it is
possible to use Laccase P together with pumice stone. In this case the
abrading effect is obtained in a mechanical way, while the enzymatic part of
Laccase P enhances the effect of the abrasion and leads simultaneously to a
certain degree of decolourization.
Other treatments
Images obtainable using Americos Laccase P are numerous. Being difficult to
list all the possible applications, we recommend contacting our technical
personnel in way to set up personalized treatments and the related
parameters. In the following page are listed some examples of treatments
including the use of Laccase P.
Suggestions for the correct usage of the product
Ecological bleach - medium contrast bleach
(The information and data contained herein
are based on controlled lab work. The recommendations are given on
experience basis, but cannot be extended to assure every possible case. It
should be verified and evaluated by the user through proper testing for the
intended conditions of application. Americos does not express or imply any
warranty, or guarantee the suitability of the product for the application
intended by buyer of the product).
Copyright
(c) 2011 Americos Chemicals Pvt. Ltd. All Rights Reserved
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