Emulsifier for waterproof leather and articles

GREIBOSOL WPI

Product Description

GREIBOSOL WPI is a specialised emulsifier developed specifically for the production of waterproof leather and waterproof leather articles. The product is based on a combination of synthetic fatty substances and specially selected emulsifiers, united through a dedicated emulsifying procedure. This composition enables GREIBOSOL WPI to be applied at every stage of the wet-end process.

GREIBOSOL WPI acts as a dispersing agent, significantly enhancing the water resistance of leather by promoting the uniform distribution of waterproofing fatliquors throughout the full cross-section of the hide. The penetration of all chemicals applied alongside it is optimised accordingly, ensuring consistent and thorough fatliquoring results.

The product demonstrates stability in the presence of mineral tanning salts and hard water, allowing its use under a wide range of processing conditions. This versatility makes GREIBOSOL WPI a reliable component within varied tannery liquor systems.

In addition, GREIBOSOL WPI improves the wetting-back of crust leathers, with particular benefit for waterproof crust leathers, making it a valuable auxiliary in both primary processing and secondary finishing operations.

Product Benefits

  • GREIBOSOL WPI is suitable for use at every stage of the wet-end process, offering exceptional flexibility in tannery operations.
  • As a dispersing agent, it promotes the even distribution of waterproofing fatliquors throughout the entire leather cross-section.
  • The penetration of all chemicals applied in conjunction with GREIBOSOL WPI is significantly improved.
  • The product is stable in the presence of mineral tanning salts and hard water, making it compatible with a wide range of process liquors.
  • GREIBOSOL WPI improves the wetting-back of crust leathers, particularly waterproof crust leathers.
  • The product may be applied either diluted or undiluted, offering practical flexibility in liquor preparation.
  • Produced by a specialised emulsifying procedure, GREIBOSOL WPI ensures consistent and reproducible product quality.
  • Its anionic character allows effective combination with anionic and non-ionic auxiliaries commonly used in tannery processes.

 

Characteristics

Base Combination of synthetic fatty substances & special emulsifiers
Appearance Clear Yellowish Liquid
Concentration approx. 45%
Chemical treatment Special emulsifying procedure
pH of a 10 % solution 7,0 – 8,0
Charge Anionic

Properties

Light fastness Very Good
Heat resistance Very Good
Chrome tanning floats Not Stable
mineral tanning floats Stable

Application Examples

GREIBOSOL WPI is recommended for application during the neutralisation stage of the wet-end process. At this point, the product acts most effectively as a dispersing agent, conditioning the leather for the subsequent application of waterproofing fatliquors and ensuring optimal distribution throughout the cross-section.

When incorporating GREIBOSOL WPI into the process, it is important to observe the recommended dosage carefully, as excessive application rates may result in a loosening of the grain layer. Prior trials are advisable to establish optimum dosage for each specific article and process combination.

GREIBOSOL WPI may be diluted into water at 60 °C with continuous stirring prior to addition to the float. Alternatively, the product may be added directly to the float without prior dilution, providing a convenient and time-efficient option for tannery operations.

Please note: GREIBOSOL WPI is not stable in chrome tanning liquors or in the presence of aluminium salts. Application in such liquor systems must therefore be avoided.

For regular application 0,2 – 0,3 % Greibosol WPI
For application on hides with high natural fat content Up to 0,5 % Greibosol WPI

Legal Information

GREIBOSOL WPI has a shelf life of up to one year when stored under appropriate conditions. The product is sensitive to frost and must not be allowed to freeze; storage temperatures must therefore be maintained between 10 °C and 40 °C at all times. The product should be thoroughly stirred before use to ensure a homogeneous consistency.

The information contained in this publication is based on our current knowledge and practical experience. It does not relieve the user of the responsibility to conduct their own tests and assessments, particularly with regard to any influences that may arise during the processing and application of our products. No legally binding guarantee of specific properties or suitability for a particular purpose can be inferred from the information provided herein. It is the sole responsibility of the recipient to observe any applicable intellectual property rights as well as all relevant laws and regulations.