Rockytan RHP – Chrome Syntan Retanning Agent for Bright Shades and Smooth Grain

Rockytan RHP is a light-fast, chromium-containing syntan based on the condensation product of phenolic sulphonic acids. It is specially developed for the retanning of chrome leather, providing excellent grain smoothness, brilliant dye shades, and outstanding physical properties.

Thanks to its low astringency and high electrolyte stability, Rockytan RHP can be used in various tanning and retanning processes while preserving the characteristic properties of chrome leather. It enhances fullness, improves leather handle, and produces intense, bright colors, especially when used with anionic dyes.

Key Features and Benefits:

• Light-fast chromium-containing retanning agent.
• Very low astringency for smooth and fine grain.
• Excellent compatibility with electrolytes and tanning auxiliaries.
• Produces bright, deep, and brilliant shades.
• Improves leather fullness and round handle.
• Enhances tear strength and shrinkage temperature.
• Suitable for pre-tanning, tanning, and retanning applications.
• Preserves the chrome character of leather.
• Improves dye uptake and color uniformity.

Technical Specifications

The technical values above are based on the product's Technical Data Sheet.

Applications in Leather Processing:

Rockytan RHP is a chrome syntan complex designed for leather articles where the chrome characteristics must be maintained. The product can be used during pre-tanning, tanning, and retanning operations to improve leather quality and processing performance.

Recommended applications:

• Retanning of chrome-tanned leather.
• Pre-tanning and tanning processes.
• Footwear leather.
• Upholstery leather.
• Garment leather.
• Leather goods and accessories.
• White and pastel-colored leather articles.
• Leathers requiring excellent dyeability and grain smoothness.

Because Rockytan RHP helps normalize different wet-blue qualities, it contributes to more consistent leather production.

Performance Advantages:

Smooth and Fine Grain

Rockytan RHP has very low astringency, which results in a finer grain structure and improved surface smoothness. This makes it particularly suitable for premium leather articles.

Brilliant and Intense Colors

The product promotes bright, deep, and brilliant shades, especially when used with anionic dyes, helping manufacturers achieve vibrant and uniform colors.

Excellent Light Fastness

Rockytan RHP provides outstanding light fastness, making it ideal for leathers exposed to sunlight or requiring long-lasting color stability.

Improved Physical Properties

Leathers treated with Rockytan RHP benefit from:

• High tear strength.
• Increased shrinkage temperature.
• Better fullness and round handle.
• Enhanced dye penetration and leveling.

Recommended Dosage:

General Retanning

• 1–3% based on shaved weight.
• Apply prior to neutralization.

Pre-Tanning

• 1–2% based on pelt weight.
• Add after pickling in the same bath and run for approximately 30 minutes.

The exact dosage should be determined according to the leather type and desired final properties. Laboratory trials are recommended before industrial-scale production.

Why Choose Rockytan RHP?

Rockytan RHP combines the benefits of chrome syntans and phenolic condensation products to deliver superior fullness, grain smoothness, and brilliant dye shades. Its excellent electrolyte stability and compatibility with chrome tanning systems make it an ideal retanning solution for high-quality leather production.

Whether used in pre-tanning, retanning, or finishing processes, Rockytan RHP ensures consistent performance and premium leather quality.

Packaging:

Rockytan RHP is supplied in:

• 25 kg polyethylene (PE) bags.

Other packaging options may be available upon request.

Storage Conditions:

For optimum product stability:

• Store in tightly sealed containers.
• Keep at temperatures between 5°C and 25°C.
• Protect from freezing and direct sunlight.
• Prevent water evaporation and skin formation.

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