Polyacrylic polymer retanning agent for soft leathers
GREIBOTAN TL
GREIBOTAN TL is a polyacrylic polymer retanning agent based on an aqueous solution of acrylic acid and ester, specifically developed for soft leathers with the highest demands on washability, structural stability, and waterproofing performance.
Applied during the neutralization stage, GREIBOTAN TL penetrates evenly into the leather fibre structure and effectively improves grain tightness at this early stage of the wet-end process, preparing the leather optimally for all subsequent retanning, dyeing, and fatliquoring operations. Its acrylic acid and ester chemistry creates stable bonds with the collagen fibre network that remain intact even after repeated washing cycles, ensuring that the character of the leather, its softness, grain quality, and handle, is durably preserved throughout the service life of the finished article.
GREIBOTAN TL delivers excellent waterproofing properties, making it an ideal retanning polymer for washable garment leathers where resistance to water penetration and dimensional stability after washing are critical performance requirements.
When mixed with fatliquor, GREIBOTAN TL acts as a powerful dispersing and penetration aid, ensuring deep and even distribution of the fatliquor emulsion throughout the full leather cross-section. This interaction simultaneously delivers a very soft handle and improves bath exhaustion of the fatliquoring agents, contributing to a cleaner effluent and more economical use of process chemicals.
Key Benefits
Characteristics
| Base | Aqueous solution of acryl acid and ester |
| Appearance | Colourless liquid |
| Concentration | 20 – 24 % |
| pH of a 10 % solution | 4.0 – 5.0 |
| Light fastness | Excellent |
Properties
Application Examples
GREIBOTAN TL is the preferred polyacrylic retanning agent for washable garment leathers and all soft leather articles where permanent structural stability, excellent waterproofing, and a soft, natural handle are the primary requirements.
In the production of washable garment leathers, GREIBOTAN TL stabilises the fibre structure during neutralization, ensuring that the leather retains its softness, grain tightness, and dimensional stability after washing without loss of handle or surface quality. This makes it the essential retanning polymer for any tannery producing leathers destined for machine-washable garment and accessory applications.
When incorporated directly into the fatliquor blend, GREIBOTAN TL disperses the fatliquor emulsion evenly and supports its deep penetration into the full leather cross-section, resulting in uniform lubrication of the fibre structure, consistent softness across the full hide surface, and improved exhaustion of the fatliquoring bath.
For leathers requiring waterproofing performance in combination with a soft and natural handle, GREIBOTAN TL delivers the water resistance required for demanding outdoor and fashion garment applications, where durability in wet conditions is as important as softness and aesthetics in dry use.
| For washable garment | 6 % | GREIBOTAN TL |
| 8 – 10 % | GREIBOSOL HPH | |
| 1 – 2 % | GREIBOSOL SBH |
Legal Information
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.