Degreasing Alkaline Lipase

Specifications

BENEFITS                    * Easy to formulate into a ready to use product.

                                      * Significantly reduces the amount of surfactant required.

                                      * Results in a more even distribution of fats and improved dye uptake.

                                      * On bovine hides - increased tear and tensile strength.

INTRODUCTION

DENIE-DEG NS-G is an alkaline lipase enzyme concentrate designed to be diluted prior to being used as an enzymatic degreasing agent. It hydrolyses triglycerides into more readily water soluble diglycerides and monoglycerides. This makes it easier to separate the fats from the waste water. DENIE-DEG NS-G can be used as a partial replacement for surfactants during soaking or liming, however for bovine hides it can totally replace surfactant use. Additional benefits for bovine hides include: improved quality of nubuck leather; easier production of hydrophobic leather; and improved fogging values of automotive leather.

Dilution may be undertaken by the tannery or, more commonly, by third party formulators who may blend it with other active constituents.

TEMPERATURE and pH PROFILES

The performance of enzymatic leather processing products depends upon process conditions such as temperature, pH, and time, nature of the substrate and enzyme concentration.

The nature of DENIE-DEG NS-G means that it is effective at temperatures up to 50°C.

DENIE-DEG NS-G is effective over a wide pH range: 6.0 - 12.0 for soaking; 12 - 13 for liming.

Due to the type of enzyme and its versatility, DENIE-DEG NS-G can be considered as the enzyme constituent of products used in other leather processing stages such as soaking.

DIRECTIONS FOR USE

DENIE-DEG NS-G has a high enzyme activity level and should not be used directly in leather processing stages in its neat form. The product should be diluted or used as a constituent of a degreasing agent prior to use. Maximum performance is achieved if DENIE-DEG NS-G is applied by “split-dosage” (as a guide 1/3 and 2/3) in both soaking and liming.

Order of addition for liming:

                                    All chemicals except DENIE-DEG NS-G and surfactants.

                                    Ensure that the hides / skins / pelts are well wetted then add DENIE-DEG NS-G;

                                    After 20 - 30 minutes add surfactants.

The starting dosage level of a dilution or preparation should be equivalent to using DENIE-DEG NS-G at:

                                           Bovine hides       0.015% - 0.020% on weight of hide.

                                           Pigskins               0.005% - 0.007% on weight of hide.

                                           Sheepskins           0.008% - 0.010% on weight of hide.

Variations in hide and local conditions can affect the performance of leather processing chemicals. DENYKEM recommend that small scale tests are carried out under local conditions before using products in full scale production. This will avoid any overdosing and any damage that may result from it. This is especially important where poor quality or badly preserved hides are being processed.

TECHNICAL DATA (typical)

Appearance:            Granule.  (Note: Colour may vary. It is not an indication of product strength.)

Active constituent:  Alkaline lipase.

Activity:                   100 KLU/g

Storage:                    Storage temperature should be controlled between 5° and 25°C. Keep in sealed containers and                                  avoid exposure to moisture and high humidity.

Shelf life:                  6 months minimum under correct storage conditions.

                                 If there is an extended storage period, higher temperature or high moisture levels, Dosage:                                  requirements may need to be increased.