SEATAN RS: Premium Amino Resin Retanning Agent for Genuine Leather
Dicyandiamide Polymeric Resin — Selective Filling in Loose Areas, Excellent Fullness & Grain Tightness, Retains Chrome Characteristics, Good Level Dyeing, Good Buffability & Low Formaldehyde for All Leather Types by SEATON
Introduction
In genuine leather retanning, tanneries need amino resins that deliver targeted selective filling in loose and empty areas, build excellent fullness and grain tightness, preserve the natural characteristics of chrome-tanned leather, provide uniform dyeing, and offer good buffability—while keeping formaldehyde levels low to meet modern regulatory and market requirements. SEATAN RS is SEATON's premium amino resin retanning agent for genuine leather—an anionic dicyandiamide polymeric resin (95% active substance, pH 9.0) supplied as a light brown powder. With a selective filling action that mainly deposits itself in the loose structured parts of the leather, RS delivers excellent fullness and grain tightness, retains chrome leather characteristics, produces no drawn grain effect, offers good level dyeing properties and good buffability, and is low formaldehyde—providing all the performance of traditional amino resins with improved environmental compliance.
Core Benefits
Selective Filling in Loose Structured Parts — Targeted Body Where Needed
The defining characteristic of SEATAN RS is its selective filling action mainly depositing itself in the loose structured parts of the leather. Empty and loose areas—typically found in the belly, flank, and other thin, open-fiber regions of the hide—are a persistent quality challenge that downgrades leather, reduces usable area, and creates uneven handle across the hide. RS's dicyandiamide polymeric resin chemistry selectively penetrates and deposits in these loose, open fiber regions, building body and fullness precisely where it is most needed, while leaving denser backbone areas naturally flexible. This targeted selective filling produces more uniform body and substance across the entire hide, minimizing area differences and producing leather with consistent handle and appearance from edge to edge. By focusing filling on loose areas, RS helps tanneries maximize usable area, improve grade yield, and upgrade the quality of challenging raw hides that would otherwise suffer from noticeable empty and loose sections.
Excellent Fullness & Grain Tightness — Premium Body with Compact Grain
SEATAN RS delivers excellent fullness and grain tightness. The dicyandiamide polymeric resin builds substantial body and fullness throughout the leather fiber network, producing leather with a rich, substantial handle and improved substance. Unlike many filling agents that produce loose or coarse grain, RS simultaneously tightens the grain layer, producing a smooth, compact, fine-grained surface. Importantly, RS produces no drawn grain effect—the grain remains natural and smooth without the unnatural stretching or drawing that some filling resins can cause. This combination of excellent fullness, tight grain, and no drawn grain effect means tanneries can build body and substance while preserving a premium, natural grain appearance. The excellent fullness and grain tightness directly improve the perceived quality and market value of the leather, making RS especially valuable for leathers requiring both body and a refined grain surface.
Retains Chrome Leather Characteristics & Good Level Dyeing
SEATAN RS retains the chrome leather characteristics and provides good level dyeing properties. A common concern with amino resin retanning is that it can alter or mask the natural characteristics of chrome-tanned leather, producing a synthetic or artificial feel. RS is specifically formulated to preserve and complement the natural properties of chrome-tanned leather, maintaining the characteristic feel, handle, and performance that customers expect from chrome leather while adding filling and fullness. Additionally, RS provides good level dyeing properties, helping dyes distribute evenly across the leather surface and through the cross-section. This uniform dyeing reduces patchiness and uneven color, producing more consistent, attractive shades and reducing dyeing defects that require rework or downgrading. By retaining chrome characteristics and promoting level dyeing, RS ensures that the retanned leather maintains its natural identity while achieving improved fullness and color consistency.
Good Buffability & Low Formaldehyde — Practical Performance with Compliance
SEATAN RS features good buffability and is low formaldehyde. The dicyandiamide polymeric resin creates a fiber structure that buffs smoothly and uniformly, making RS suitable for corrected grain, suede, and nubuck leathers where a clean, even buffed surface is required. The good buffability extends RS's utility across both full-grain and buffed leather applications, allowing tanneries to use one versatile amino resin across multiple product lines. Critically, RS is low formaldehyde, addressing one of the primary concerns associated with traditional amino resin retanning agents. This low formaldehyde profile helps tanneries meet increasingly stringent formaldehyde regulations, customer restrictions, and eco-label requirements, while still delivering the excellent filling and performance that amino resins are known for. The light brown powder can be added directly to the drum, offering convenient, easy handling without pre-dissolution. Together, good buffability and low formaldehyde make RS a practical, compliant, and versatile amino resin for modern leather production.
Technical Specifications
• Composition: Dicyandiamide polymeric resin (anionic), nitrogen-containing polymeric resin
• Appearance: Light brown powder
• Active Substance: 95%
• pH: 9.0
• Key Feature: Selective filling in loose areas, excellent fullness & grain tightness, retains chrome characteristics, no drawn grain, good level dyeing, good buffability, low formaldehyde
• Storage: 12 months in cool, dry conditions (original packaging)
Application Guidelines
SEATAN RS can be added to the drum directly as a powder. RS has selective filling in the loose structured parts of leather, making it ideal for improving uniformity and fullness in hides with loose or empty areas. The powder form allows for convenient direct addition without pre-dissolution.
Recommended Application Quantities (% based on shaved weight)
• In retanning / filling: 2.0 - 6.0%
• In retanning after fatliquoring: 1.0 - 3.0%
RS is suitable for all types of leather, including chrome-tanned, corrected grain, suede, nubuck, shoe upper, upholstery, garment, and accessory leathers. Its anionic charge and dicyandiamide polymeric resin chemistry make it compatible with conventional retanning systems. The low formaldehyde profile supports compliance with formaldehyde-sensitive market requirements. Exact dosage and application stage should be optimized based on leather type, desired fullness and grain tightness, loose-area severity, and specific process conditions. SEATON technical support is available to help optimize RS application for your specific genuine leather production requirements.
Economic & Quality Value
SEATAN RS delivers significant economic and quality value through its unique combination of selective filling in loose areas, excellent fullness and grain tightness, retained chrome leather characteristics, good level dyeing, good buffability, and low formaldehyde. The selective filling in loose structured parts minimizes area differences, maximizes usable area, and improves grade yield—especially valuable for tanneries processing variable or lower-grade raw hides. The excellent fullness and grain tightness improve the perceived quality and market value of the leather, while the no-drawn-grain effect preserves a natural, premium grain appearance. The retained chrome leather characteristics ensure that the leather maintains its natural identity and expected performance, avoiding the synthetic feel that can result from some amino resins. The good level dyeing reduces dyeing defects and rework, improving first-quality yield and color consistency. The good buffability extends RS's utility to corrected grain, suede, and nubuck production, simplifying inventory and process planning. The low formaldehyde profile enables compliance with stringent regulations and access to formaldehyde-sensitive markets, reducing compliance risk. As a high-activity (95%) powder that can be added directly to the drum, RS offers efficient usage and convenient handling. For tanneries producing all types of genuine leather, RS delivers a strong return on investment through improved selective filling, better fullness and grain, retained chrome character, uniform dyeing, buffing versatility, and environmental compliance.
About SEATON & Conclusion
SEATON is a globally recognized leader in high-performance leather chemicals and wet-end processing solutions. With decades of expertise in amino resin chemistry, dicyandiamide polymeric resin technology, retanning science, and environmental compliance, SEATON combines cutting-edge research with practical manufacturing knowledge to deliver products that consistently exceed industry expectations. SEATAN RS represents SEATON's commitment to advancing amino resin retanning agent technology through low-formaldehyde, high-performance formulations that deliver superior selective filling, fullness, and grain quality.
SEATAN RS represents the premium standard in amino resin retanning agent for genuine leather—the perfect combination of anionic dicyandiamide polymeric resin technology, selective filling in loose structured parts, excellent fullness and grain tightness, retained chrome leather characteristics, no drawn grain effect, good level dyeing properties, good buffability, and low formaldehyde. Whether you're retanning chrome-tanned, corrected grain, suede, nubuck, shoe upper, upholstery, garment, or all types of genuine leather, this premium amino resin retanning agent for genuine leather delivers consistent, high-quality results with superior selective filling, fullness, grain quality, and environmental compliance.
Achieve targeted selective filling in loose areas with dicyandiamide polymeric resin technology, produce excellent fullness and grain tightness with no drawn grain effect, retain natural chrome leather characteristics, enjoy good level dyeing for uniform color and good buffability for versatile full-grain and suede production, benefit from low formaldehyde for regulatory compliance, and experience the difference that premium SEATON leather chemicals and innovative amino resin retanning agent technology can make in your genuine leather production. Choose SEATAN RS today—the intelligent choice for superior selective filling, fullness, grain quality, and low-formaldehyde compliance in genuine leather retanning.
Contact your SEATON representative today for amino resin retanning agent trials and genuine leather selective filling optimization.