Bentone sd 1

Bentone SD-1 is an organic derivative of a bentonite clay, specifically designed as a rheological additive for solvent-based systems. It is widely used in paints, coatings, printing inks, and lubricants to provide thickening, anti-settling, and anti-sagging properties. Unlike traditional organoclays, it is an easy-dispersible (SD stands for Super Dispersible) grade, meaning it can be added as a powder during the pigment grind stage without the need for a chemical activator or the preparation of a pre-gel.

The primary advantage is process efficiency. It eliminates the need for polar activators (like methanol or propylene carbonate) and high-shear pre-gelling, which reduces production time and costs. Technically, it offers excellent storage stability, prevents pigment hard-settling, and ensures consistent viscosity control across a wide range of temperatures. It is particularly effective in low-to-medium polarity aliphatic and aromatic solvents.

Buyers must ensure the supplier provides a Certificate of Analysis (COA) for every batch to verify parameters like moisture content, particle size distribution, and loss on ignition. For international trade, compliance with REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) is mandatory for the EU market. Additionally, verify that the product meets ISO 9001:2015 quality management standards and that the Safety Data Sheet (SDS) is compliant with the GHS (Globally Harmonized System).

For maximum effectiveness, Bentone SD-1 should be added to the mill base during the dispersion stage. While it is 'easy-dispersible,' it still requires sufficient shear and a minimum temperature (typically above 20°C) to fully develop its rheological structure. It is recommended to add it before the pigments and extenders to ensure it is thoroughly wetted and dispersed throughout the solvent system.

The main risks include moisture absorption during sea transit and customs delays due to misclassification. Ensure the product is packed in multi-layer moisture-proof bags (typically 25kg paper bags with PE liners) and palletized with shrink wrap. Correct HS Code classification (usually 3824.99 or 2508.10) is vital to avoid fines or seizure by customs authorities.

Utilize professional B2B platforms like Made-in-China.com, focusing on Audited Suppliers who have undergone third-party verification by agencies like SGS or TÜV Rheinland. Always request a pre-shipment sample for lab testing and use secure payment methods such as letters of credit (L/C) or escrow-based trade terms to mitigate financial risk.

Since Bentone SD-1 is generally classified as non-hazardous for transport, it can be shipped via standard ocean freight. However, buyers should request FCL (Full Container Load) for large orders to minimize handling damage. For smaller batches, ensure LCL (Less than Container Load) shipments are not co-loaded with liquid chemicals that could leak and contaminate the powder.

Focus on price stability clauses and lead time guarantees. Because chemical raw material prices fluctuate with mineral mining and energy costs, negotiating a volume-based discount (e.g., 5-10% off for annual contracts exceeding 20 tons) is effective. Additionally, insist on a quality consistency clause where the supplier agrees to bear the cost of return shipping if the COA does not match the delivered goods.