Synthetic Fatliquoring Agent – Strong Dispersing Effect
GREIBOSOL NPN
GREIBOSOL NPN is a high-performance synthetic anionic fatliquor based on a combination of surface-active emulsifiers and hydrocarbons, sulphonated for optimised performance, and supplied as a pale beige, low-viscosity emulsion. It is specifically developed for pre-fatliquoring applications in the pickle and chrome tanning bath as well as for partial use in the main fatliquoring process.
The defining performance characteristic of GREIBOSOL NPN is its excellent dispersing power, which actively supports the even distribution and thorough uptake of other fatliquoring agents in the combination system throughout the full leather cross-section. By acting as a dispersing and distribution aid for the accompanying fatliquors, GREIBOSOL NPN ensures that the complete fatliquor combination achieves consistent and uniform results across the entire hide, delivering more uniform softness, handle, and physical properties than would be achievable without a dedicated dispersing fatliquor component.
GREIBOSOL NPN demonstrates excellent stability in pickle baths, mineral tanning baths, and chrome tanning floats, making it one of the most process-stable synthetic pre-fatliquors available and ensuring reliable emulsion performance under the highly acidic and electrolyte-rich conditions encountered across all of these process stages.
Its excellent light fastness and excellent heat resistance make GREIBOSOL NPN the preferred fatliquor for leathers of the highest quality requirements, including automotive upholstery, premium furniture leather, and fashion leather applications where long-term colour and handle stability under light and heat exposure are critical performance criteria.
GREIBOSOL NPN contains a microbiological stabilising additive that ensures consistent product quality and reliable emulsion stability throughout the full shelf life, making it particularly well suited for operations where extended storage periods and microbiological process safety are important requirements.
GREIBOSOL NPN offers an economical alternative to GREIBOSOL PPN, delivering equivalent dispersing performance and process stability at a more accessible price point, making it the preferred choice for tanneries seeking the highest quality results with optimised cost efficiency.
GREIBOSOL NPN is completely free from AOX and can be added undiluted directly to the bath, or diluted with water between 20°C and 60°C to form a fine dispersed emulsion.
Key Benefits
Characteristics
| Base | Combination of surface active emulsifiers with hydrocarbons |
| Appearance | Pale beige, low viscous emulsion |
| Concentration | – |
| Chemical treatement | Sulphonated |
| pH of a 10 % solution | 7,0 – 9,0 |
| Charge | Anionic |
Properties
| light fastness | Excellent |
| Heat resistance | Excellent |
| chrome tanning floats | stable |
| pickle baths | Excellent |
| mineral tanning baths | Excellent |
| chrome tanning floats | Excellent |
Application Examples
GREIBOSOL NPN is the preferred synthetic pre-fatliquor for all premium leather applications where consistent fatliquor distribution, process stability across all process stages, excellent light and heat fastness, reliable product stability over extended storage periods, and cost-efficient production are the defining requirements.
In pre-fatliquoring within the pickle and chrome tanning bath, GREIBOSOL NPN ensures even early-stage distribution of fatliquoring components throughout the hide structure, improving chrome uptake uniformity, supporting consistent wet blue quality, and preparing the fibre structure optimally for all subsequent processing steps. Its excellent stability in pickle baths, mineral tanning baths, and chrome tanning floats guarantees reliable emulsion performance regardless of the process stage in which it is applied.
As a dispersing component in multi-component fatliquor combinations, GREIBOSOL NPN enhances the distribution and uptake of the accompanying fatliquoring agents throughout the full leather cross-section, enabling the complete fatliquor system to develop its full performance potential and deliver consistent, uniform softness and handle across the entire hide.
When incorporated as a partial component in the main fatliquoring process, GREIBOSOL NPN contributes additional softness and a very fine, refined handle to the finished leather, elevating the tactile quality of the finished article to meet the highest requirements of premium leather production.
The offer level lies between 1 – 3 % based on pell weight and applies equally to cattle hide, small skins and pig skins. Wetting back after crusting e.g. Nappa for upholstery
| Pig garment suedes | 5.0 % GREIBOSOL NPN (% based on shaved weight) |
| Fatliquoring | 5.5 % GREIBOSOL SLM (% based on shaved weight) |
| Shoe Nappa | 4.5 % GREIBOSOL NPN (% based on shaved weight) |
Legal Information
GREIBOSOL NPN has a shelf life of approximately one year and is not sensitive to frost.
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.