{"id":30319,"date":"2026-08-07T07:05:59","date_gmt":"2026-08-07T07:05:59","guid":{"rendered":"https:\/\/sailadditive.com\/?p=30319"},"modified":"2026-08-12T06:53:35","modified_gmt":"2026-08-12T06:53:35","slug":"https-sailadditive-com-blog-s-4010-vs-efka-4010-dispersing-agent-testing-data-https-sailadditive-com-blog-s-4010-vs-efka-4010-dispersing-agent-testing-data","status":"publish","type":"post","link":"https:\/\/sailadditive.com\/ru\/https-sailadditive-com-blog-s-4010-vs-efka-4010-dispersing-agent-testing-data-https-sailadditive-com-blog-s-4010-vs-efka-4010-dispersing-agent-testing-data\/","title":{"rendered":"S-4010 vs. EFKA 4010 Dispersing Agent: Can You Achieve a Seamless Drop-in Replacement?"},"content":{"rendered":"
\n\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\n

Coating formulators constantly face the challenge of lowering raw material costs without compromising film quality. Supply chain uncertainties and price hikes in global additive markets further complicate this struggle. Consequently, technical teams actively seek high-performance, cost-effective alternatives to benchmark products like BASF\u2019s EFKA 4010.<\/p>\n\n\n\n

To address this demand, SailAdditive<\/a> developed S-4010 Dispersing Agent<\/strong>, a high-molecular-weight polyurethane dispersant engineered for solvent-borne coatings and pigment concentrates. But can S-4010 truly deliver a seamless drop-in replacement? In this comprehensive evaluation, we present real laboratory test data comparing S-4010 against benchmark dispersants to help R&D managers make informed formulation decisions.<\/p>\n\n\n\n

Understanding High-Molecular Polyurethane Dispersants<\/h2>\n\n\n\n

Polyurethane-based dispersants hold a commanding position in solvent-borne industrial coatings. They stabilize difficult pigments like high-jetness carbon black, organic reds, and phthalocyanines through a mechanism called steric stabilization.<\/p>\n\n\n\n

In market benchmarks, products like BASF EFKA 4010<\/a> demonstrate excellent pigment anchoring and viscosity reduction across automotive refinishes, industrial topcoats, and 2K polyurethane systems. Similarly, other prominent market alternatives such as BYK-358 N<\/a> highlight how precise chemical structure design improves film levelling and prevents surface defects.<\/p>\n\n\n\n

S-4010 Dispersing Agent utilizes an advanced modified polyurethane structure equipped with multiple anchoring groups. These groups attach firmly onto pigment surfaces while solvent-compatible polymeric chains extend into the liquid matrix. As a result, S-4010 prevents pigment re-agglomeration during grinding and storage.<\/p>\n\n\n\n

Technical Specification Comparison: S-4010 vs. EFKA 4010<\/h2>\n\n\n\n

Before initiating lab tests, formulators typically evaluate physical and chemical properties. S-4010 matches EFKA 4010 closely in active content, amine value, and solvent compatibility, making it an ideal candidate for direct replacement.<\/p>\n\n\n\n

Parameter \/ Specification<\/strong><\/td>S-4010 Dispersing Agent<\/strong><\/td>EFKA 4010 (Benchmark)<\/strong><\/td><\/tr><\/thead>
Chemical Structure<\/strong><\/td>High-Molecular Polyurethane<\/td>High-Molecular Polyurethane<\/td><\/tr>
Active Content (%)<\/strong><\/td>~50%<\/td>~50%<\/td><\/tr>
Amine Value (mg KOH\/g)<\/strong><\/td>15 \u2013 25<\/td>15 \u2013 25<\/td><\/tr>
Appearance<\/strong><\/td>Clear, light yellow liquid<\/td>Clear, light yellow liquid<\/td><\/tr>
Solvent System<\/strong><\/td>Butyl Acetate \/ PMA<\/td>PMA \/ Solvent Naphtha<\/td><\/tr>
Recommended Application<\/strong><\/td>2K PU, Epoxy, Acrylic, Coil Coatings<\/td>2K PU, Industrial, Automotive Refinish<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Furthermore, S-4010 exhibits excellent solubility in common industrial solvents, including butyl acetate, xylene, and PMA. This broad compatibility simplifies resin integration without inducing cloudiness or separation.<\/p>\n\n\n\n

Laboratory Performance Testing & Comparative Results<\/h2>\n\n\n\n

To evaluate real-world performance, our application laboratory prepared solvent-borne carbon black millbases and 2K polyurethane topcoat formulations using S-4010 and EFKA 4010 at equal active dosage levels (15% DOP on carbon black).<\/p>\n\n\n\n

1. Viscosity Reduction and Grinding Efficiency<\/h3>\n\n\n\n

Lower millbase viscosity allows higher pigment loadings and reduces milling time in bead mills.<\/p>\n\n\n\n