Organoclay CAS 68953‑58‑2 Self‑Activating Organo Bentonite SD‑1 Sag‑Resistant Rheology Additive for Low‑Polar Coatings
SD‑1 Self‑Activating Organo Bentonite (CAS 68953‑58‑2) is organoclay rheological thickener tailored for low‑polar solvent coating systems. Unlike conventional organophilic bentonite, this self‑activating grade does not require additional polar activator during dispersion. When subjected to suitable high‑shear mixing, it forms stable colloidal network inside low‑polar resin‑solvent matrix. The developed gel network effectively inhibits pigment sedimentation and prevents sagging on vertical substr
Product Overview
SD‑1 Self‑Activating Organo Bentonite, CAS 68953‑58‑2, is surface‑modified organoclay manufactured from purified bentonite clay via special organic quaternary ammonium salt modification. This self‑activating grade is engineered for low‑polar solvent‑based coating systems where traditional bentonite thickeners face poor swelling efficiency. Special surface modification removes the necessity for extra polar activator. Under proper high‑shear dispersion, the clay platelets exfoliate and reconstruct a delicate three‑dimensional colloidal network within low‑polar resin‑solvent medium. The network provides outstanding static anti‑settling effect for heavy pigments and fillers; meanwhile it delivers remarkable anti‑sag performance on vertical painting surfaces. Under paint spraying or brushing shear force, the network breaks temporarily to offer favorable leveling. After construction, the network rebuilds rapidly to avoid sag defects. SD‑1 keeps minimal interference to coating gloss and drying property, showing consistent batch‑to‑batch quality for industrial coating production.
Key Features
‑ Self‑activating formula, no additional polar activator required for low‑polar coating systems ‑ Efficient exfoliation under high‑shear dispersion, builds reversible three‑dimensional colloidal gel network ‑ Excellent anti‑settling performance for dense pigments and mineral fillers ‑ Powerful anti‑sag effect for vertical application, supports heavy film‑build coating construction ‑ Good shear‑thinning behavior, balances thickening control and surface leveling performance ‑ Less negative impact on final film gloss and drying characteristics ‑ Fine powder form, easy to incorporate into solvent‑based paint production ‑ Stable rheology performance for continuous industrial paint manufacturing
Technical Specifications
‑ Product Name: Self‑Activating Organo Bentonite SD‑1 ‑ CAS Number: 68953‑58‑2 ‑ Appearance: Light cream‑white fine powder ‑ Moisture: ≤3.5 % ‑ Loss on ignition: 35.0‑42.0 % ‑ Fineness (325 mesh residue): ≤2.0 % ‑ Bulk density: 0.22‑0.32 g/cm³
Application Scenarios
‑ Low‑polar solvent‑based industrial anti‑corrosion primers ‑ Heavy‑build alkyd coatings for metal substrate ‑ Low‑polar varnish and pigmented topcoat formulations ‑ Solvent‑based marine and machinery protective coatings ‑ Anti‑settling rheology additive for low‑polar resin paint systems
Usage Recommendation
‑ Typical dosage range: 0.4‑1.8 % based on total paint weight ‑ Incorporate SD‑1 into solvent under high‑shear dispersion at 40‑60℃ to complete exfoliation before adding resin and pigments ‑ Sufficient high‑shear mixing is critical to achieve optimal rheological effect; insufficient shear will lead to poor thickening and sag‑resistant result ‑ Pre‑test rheology, leveling, anti‑sag and storage stability before formal mass production ‑ Avoid excessive addition which may cause undesired viscosity rising and poor leveling
Package & Storage
‑ Standard packing: 25kg kraft paper bag with inner PE liner ‑ Store in dry, cool and ventilated warehouse, keep away from moisture and heavy compression ‑ Keep bags tightly sealed once opened to prevent moisture absorption ‑ Shelf life: 12 months under recommended storage condition
Safety Notes
‑ Avoid generating and inhaling fine dust during material handling. Suitable dust mask and safety goggles are required. ‑ Prevent direct skin contact. Wear protective gloves during operation. ‑ Keep away from open flame. ‑ Please refer to SDS document for complete handling, transportation and emergency instructions.
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Organoclay CAS 68953‑58‑2 Self‑Activating Organo Bentonite SD‑1 Sag‑Resistant Rheology Additive for Low‑Polar Coatings
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