Water‑Dispersible Organoclay BENTONE‑EW Equivalent CAS 68953‑58‑2 Organophilic Bentonite for Waterborne Ink Adhesive
Water‑Dispersible Organoclay BENTONE‑EW Equivalent (CAS 68953‑58‑2) is specially surface‑modified organophilic bentonite powder designed as direct alternative to BENTONE‑EW, targeted for waterborne ink and water‑based adhesive systems. Under moderate high‑shear dispersion inside aqueous phase, silicate platelets exfoliate to form a reversible three‑dimensional thixotropic gel network. During static storage, this network effectively suspends color pigments and mineral fillers and prevents hard se
Product Overview
Water‑Dispersible Organoclay BENTONE‑EW Equivalent, CAS 68953‑58‑2, is produced from purified natural montmorillonite through specialized organic surface modification, serving as premium replacement for BENTONE‑EW water‑dispersible organoclay. This rheology‑modifying powder is optimized for water‑based printing ink and industrial waterborne adhesive formulations. Different from traditional solvent‑type organo bentonite, this grade possesses good water‑dispersing capability. Target platelet exfoliation can be achieved via moderate high‑shear dispersion in aqueous media, and additional polar activator is not required. Exfoliated silicate platelets construct a reversible three‑dimensional colloidal thixotropic network within aqueous resin‑emulsion matrix. At static storage state, the network stabilizes dispersion of organic color pigments, carbon black and mineral fillers, and inhibits generation of hard compact sediment. Under high‑speed printing, stirring or roller coating shear, the colloidal network is disrupted, lowering system viscosity to guarantee smooth ink transfer and adhesive spreading on substrates. Once external mechanical shear disappears, thixotropic network rebuilds quickly, restraining ink bleeding and adhesive sagging. The product exhibits good compatibility with acrylic emulsions, polyurethane dispersions and other water‑borne binders, with limited adverse effect on ink gloss, drying speed and final adhesive bonding strength. Consistent batch‑to‑batch quality supports continuous mass‑production of water‑based printing inks and industrial waterborne adhesives.
Key Features
‑ Water‑dispersible organophilic bentonite, functional equivalent to BENTONE‑EW for waterborne ink and adhesive ‑ No extra polar activator needed; moderate high‑shear dispersion realizes sufficient silicate‑platelet exfoliation in aqueous system ‑ Excellent anti‑settling performance for organic pigments, carbon black and mineral fillers during long‑term storage of ink and adhesive ‑ Effective anti‑sag and anti‑bleeding property after printing or adhesive coating onto substrates ‑ Distinct shear‑thinning thixotropy, balancing static suspension stability and dynamic flow‑transfer performance during processing ‑ Broad compatibility with various water‑borne emulsions, dispersions and standard formulation auxiliaries, minor influence on gloss, drying and bonding performance ‑ Fine free‑flowing light off‑white powder, easy feeding for ink and adhesive production workshops ‑ Stable rheological consistency for large‑scale manufacturing of water‑based printing inks and industrial waterborne adhesives
Technical Specifications
‑ Product Name: Water‑Dispersible Organoclay BENTONE‑EW Equivalent ‑ CAS Number: 68953‑58‑2 ‑ Appearance: Light off‑white fine powder ‑ Moisture: ≤3.5 % ‑ Loss on ignition: 33.0‑42.0 % ‑ Fineness (325 mesh residue): ≤2.0 % ‑ Bulk density: 0.22‑0.33 g/cm³
Application Scenarios
‑ Water‑based flexographic and gravure printing inks for packaging materials ‑ Water‑based industrial laminating adhesives and assembly adhesives ‑ Pigment‑rich aqueous ink formulations prone to pigment settling ‑ Medium‑viscosity waterborne adhesive systems requiring anti‑sag control ‑ Rheology‑modifying thickening powder for water‑based ink and adhesive manufacturing
Usage Recommendation
‑ Typical dosage range: 0.3‑1.5 % based on total formulation weight ‑ Add organoclay powder to water or pigment grinding phase under moderate high‑shear mixing before introducing resin emulsion ‑ Adequate dispersion speed and mixing duration are critical to obtain target thixotropy; insufficient dispersion will cause pigment settling and poor anti‑bleeding results ‑ Complete laboratory pre‑testing covering viscosity, storage stability, anti‑bleeding, drying behaviour and final bonding strength before mass‑scale production ‑ Avoid excessive addition, which will cause undesired high viscosity and impair ink transfer and adhesive spreading performance
Package & Storage
‑ Standard packing: 25kg kraft paper bag with inner PE liner ‑ Store in cool, dry and ventilated warehouse; protect powder from moisture absorption and heavy compression ‑ Tightly seal opened bags to prevent moisture ingress ‑ Shelf life: 12 months under proper storage conditions
Safety Notes
‑ Avoid dust generation and inhalation during material handling; wear suitable dust mask and safety goggles. ‑ Prevent direct skin contact; chemical‑resistant gloves are required for operation. ‑ Keep away from open flame and high‑temperature heat sources. ‑ Please refer to SDS document for comprehensive guidance on handling, transportation and emergency disposal.
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