Rockytan ROS – Phenolic Replacement Syntan for Chrome and Vegetable-Tanned Leather

Rockytan ROS is a general-purpose replacement syntan based on phenolic chemistry, specially developed for the retanning of chrome leather and vegetable-tanned leather. Its low astringency and excellent dye-leveling properties make it suitable for a wide range of leather applications.

Rockytan ROS produces light-colored leather with a medium-firm handle while preserving the natural grain pattern. In combination with vegetable tannins, it enhances color brilliance and improves the softness and appearance of the finished leather.

Key Features and Benefits:

• General-purpose replacement syntan for chrome and vegetable-tanned leather.
• Suitable for all types of leather.
• Produces almost white leather with a medium-firm handle.
• Low astringency preserves the natural grain pattern.
• Improves softness and fullness.
• Brightens leather color when used with vegetable tannins.
• Excellent dye-leveling properties.
• Soluble in both cold and warm water.
• Compatible with various retanning formulations.

Technical Specifications:

The above specifications are based on the Technical Data Sheet.

Applications in Leather Processing:

Rockytan ROS has been developed as a versatile retanning agent for use in both chrome-tanned and vegetable-tanned leather production. Because of its balanced filling properties and low astringency, it can be used for a variety of leather articles requiring softness, brightness, and fine grain characteristics.

Recommended applications:

• Chrome leather retanning.
• Vegetable tanning and combination tanning.
• Footwear leather.
• Upholstery leather.
• Garment leather.
• Leather goods and accessories.
• White and light-colored leather.
• Fashion and soft leather articles.

Rockytan ROS dissolves easily in both cold and warm water, simplifying its integration into different retanning processes.

Performance Advantages:

Preserves Fine Grain Structure

Thanks to its low astringency, Rockytan ROS preserves the natural grain pattern of the leather and helps maintain a smooth, elegant appearance.

Produces Light-Colored Leather

Rockytan ROS produces almost white leather with a medium-firm handle, making it suitable for light-colored and pastel leather articles.

Enhances Softness and Color Brilliance

When used together with vegetable tanning agents, Rockytan ROS improves leather softness and enhances color brightness.

Excellent Dye Leveling

The product promotes uniform dye penetration and leveling, helping manufacturers achieve consistent and brilliant shades.

Recommended Use:

Rockytan ROS can be used in various retanning formulations depending on the desired fullness, softness, and final leather characteristics.

Typical dosage:

• 2–6% based on shaved leather weight.

The optimum dosage depends on:

• Type of leather.
• Required handle and fullness.
• Desired color shade.
• Retanning system.
• End-use application.

Laboratory trials are recommended to determine the most suitable dosage for each production process.

Why Choose Rockytan ROS?

Rockytan ROS combines excellent softness, low astringency, and superior dye-leveling performance in a single product. Its phenolic chemistry makes it an effective replacement syntan for both chrome and vegetable tanning systems.

Whether used for footwear, upholstery, garment, or fashion leather, Rockytan ROS helps manufacturers produce high-quality leather with fine grain, bright colors, and excellent handling properties.

Packaging:

Rockytan ROS is available in:

• 25 kg polyethylene (PE) bags.

Custom packaging options may be available upon request.

Storage Conditions:

For maximum product stability:

• Store in tightly sealed containers.
• Keep at temperatures between 5°C and 25°C.
• Protect from freezing and direct sunlight.
• Avoid moisture and contamination.

Always consult the Material Safety Data Sheet (MSDS) before use.