In modern ink manufacturing (such as alcohol-soluble polyurethane PU inks, gravure/flexographic inks, and high-performance color pastes/chips), high-surface-area carbon black (such as Degussa FW200) and organic pigments present severe formulating challenges due to their massive specific surface area and extreme oil absorption. During the grinding process, these pigments often cause skyrocketing viscosity, excessive thixotropic pseudoplasticity, or even complete "jelly-like" gelation. Traditional low-molecular-weight dispersants frequently fail to maintain long-term fluidity in high-solid ink systems due to insufficient anchor strength or limited active content.

Tianjin Ruikel Chemical Co., Ltd. introduces the RD-9780 Polymeric Dispersant (engineered as a precise, drop-in alternative to Lubrizol Solsperse 20000), tackling the four core pain points in ink manufacturing and providing formulators with high-efficiency rheology and dispersion solutions:

1. Effect-Level Viscosity Reduction & Anti-Gelation: Instantly wets and strongly adsorbs onto the surfaces of high-surface carbon black or organic pigments, completely eliminating viscosity spikes and jelly-like gelation during grinding to keep high-solid inks flowing smoothly and leveling perfectly.

2. Superior Compatibility in Alcohol-Soluble PU Systems: Features natural synergy with alcohol-soluble polyurethane resins and mixed solvents (alcohols, esters) commonly used in flexible packaging composite inks, ensuring zero flocculation, no plate clogging, and excellent transferability during high-speed printing.

3. $98\%$ Ultra-High Active Content & Zero Interference: Boasts a purity of 98±2% active ingredients, introducing minimal extra solvent or low-molecular impurities. While delivering high-efficiency deflocculation, it has zero negative impact on ink drying speed, lamination bond strength (peel strength), or gloss.

4. Long-Term Anti-Flocculation & Anti-Settling: Builds a robust steric hindrance layer on pigment surfaces, effectively preventing crystal growth (Ostwald ripening/re-coarsening) and hard settling even during long-distance transit or fluctuating warehouse temperatures.

I. Core Performance Advantages (Optimized for Inks & High-Surface Pigments)

• "Effect-Level" Dispersion for Alcohol-Soluble PU Inks: In alcohol-soluble polyurethane (PU) ink systems, RD-9780 delivers exceptional wetting and deflocculation for high-surface carbon black (such as Degussa FW200) and various organic pigments, dramatically reducing millbase viscosity and optimizing printability.

98% Ultra-High Active Content for Cost Efficiency: Compared to standard dispersants burdened with heavy solvent carriers, RD-9780 contains 98 ± 2% active matter, cutting down total system VOCs/odors while delivering stronger active anchoring points at equivalent dosages.

• Outstanding Viscosity Reduction & Anti-Settling Control: Multi-point strong anchoring structures lock pigment particles firmly in place, preventing re-agglomeration, flocculation, and hard caking over prolonged storage.

• Broad Resin Compatibility: Universally compatible across solvent-based coatings, plastic spray paints, industrial coatings, color chips/pastes, and alcohol-soluble ink systems, maximizing pigment color development to achieve higher jetness, tinting strength, and gloss.

II. Recommended Applications & Dosage Guidelines

1. Target Applications

• Inks: Alcohol-soluble polyurethane (PU) inks, gravure/flexographic inks, high-end color pastes, and color chips.

• Coatings: Automotive paints, industrial protective coatings, high-end plastic finishes.

• Pigment Targets: High-surface-area carbon black (e.g., FW200), high-performance organic pigments.

2. Recommended Dosage (Based on Pigment Weight)

• Organic Pigments: 7% - 15%

• Low-Surface Carbon Black: 10% - 20%

• High-Surface Carbon Black (e.g., FW200): 40% - 80% (Adjust according to specific surface area and oil absorption values)

III. Standard Laboratory Usage Procedure & Tips

To fully leverage the high-molecular deflocculation efficiency of RD-9780, follow these standardized operating practices during ink preparation:

1. Pre-Dissolution: Before introducing pigments, always fully dissolve and mix RD-9780 uniformly into the grinding vehicle (solvent/resin blend). This step ensures the dispersant occupies active adsorption sites prior to pigment wetting.

2. Stepwise Addition & Grinding: Slowly introduce the high-surface carbon black or organic pigments, pre-wet them using a high-speed disperser, and proceed to media milling (e.g., zirconia beads) for high-shear grinding until target fineness is achieved.

IV. Summary & Sample Requests

If you are looking for a high-active-content dispersant capable of seamlessly replacing Lubrizol Solsperse 20000 while exhibiting superior viscosity reduction and anti-settling performance in alcohol-soluble PU inks and high-surface carbon black systems, Ruike Chemical's RD-9780 is your ideal choice.

To download full Technical Data Sheets (TDS), Safety Data Sheets (SDS), or request free laboratory evaluation samples, visit our official website at www.rk-chem.com.

•  Visit www.rk-chem.com to explore RD-9780 and other cutting-edge ink and coating additive portfolios.

• Contact the Ruike Chemical application technical team today for tailored formulation advice and to request free laboratory test samples!