Name: GARAMITE‑1958 Equivalent Organoclay CAS 68953‑58‑2 Powder Rheology Additive for Epoxy Unsaturated Polyester Resin
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GARAMITE‑1958 Equivalent Organoclay (CAS 68953‑58‑2) is mixed‑mineral modified organoclay powder designed as a direct alternative to GARAMITE‑1958, specially developed for epoxy and unsaturated polyester resin including solvent‑free resin systems. Under proper high‑shear dispersion, the mineral platelets exfoliate and construct a reversible three‑dimensional thixotropic network within resin matrix without mandatory polar activator. It effectively inhibits sedimentation of mineral fillers and sho

Product Detail

Product Overview

GARAMITE‑1958 Equivalent Organoclay, CAS 68953‑58‑2, is a mixed‑mineral organophilic phyllosilicate rheology powder manufactured from purified layered silicate through specialized organic surface modification, serving as high‑performance replacement for GARAMITE‑1958. It is optimized for epoxy resin and unsaturated polyester resin formulations covering both solvent‑containing and solvent‑free composite systems. Distinguished from conventional organo bentonite, this mixed‑mineral grade features simplified dispersion procedure; high‑shear mixing enables sufficient exfoliation of silicate platelets without additional polar activator. Exfoliated silicate sheets build a reversible three‑dimensional colloidal thixotropic network inside the resin matrix. At static storage condition, the network suspends mineral fillers, calcium carbonate and short glass fibres efficiently, avoiding hard sediment cake. During pouring, casting and hand‑lay‑up lamination, applied shear breaks the gel network to lower viscosity and provide favorable resin flow and wet‑out for fibre reinforcement. After construction, thixotropic structure recovers quickly to suppress sagging and dripping on vertical mould surfaces. The additive maintains original curing behaviour of epoxy and unsaturated polyester systems, shows limited negative impact on finished composite mechanical strength, and guarantees stable batch‑to‑batch quality for composite manufacturing.

Key Features

‑ Mixed‑mineral organoclay powder, functional equivalent to GARAMITE‑1958 for epoxy and unsaturated polyester resin ‑ No mandatory polar activator required; effective exfoliation can be achieved by sufficient high‑shear dispersion ‑ Powerful anti‑settling performance for mineral fillers and short glass fibres in composite resin formulations ‑ Outstanding anti‑sag and anti‑dripping property for vertical casting and hand‑lay‑up FRP processing ‑ Typical shear‑thinning thixotropic behaviour, balances resin flow‑out during processing and static suspension stability ‑ Good compatibility with hardeners and peroxide curing agents, minor influence on resin curing characteristics ‑ Higher bulk‑density fine powder, reduces dust emission during feeding for composite workshop production ‑ Consistent rheological performance for continuous FRP, casting and heavy‑build resin production

Technical Specifications

‑ Product Name: GARAMITE‑1958 Equivalent Organoclay ‑ CAS Number: 68953‑58‑2 ‑ Appearance: Light off‑white fine powder ‑ Moisture: ≤3.5 % ‑ Loss on ignition: 33.0‑41.0 % ‑ Fineness (325 mesh residue): ≤2.0 % ‑ Bulk density: 0.26‑0.36 g/cm³

Application Scenarios

‑ Solvent‑free epoxy casting resin for electrical components ‑ Unsaturated polyester FRP laminating resin for composite parts ‑ Heavy‑build epoxy and polyester based surface putty formulations ‑ Filled resin systems containing mineral fillers and short glass fibres ‑ Rheology‑modifying powder additive for epoxy and unsaturated polyester resin composite industry

Usage Recommendation

‑ Typical dosage range: 0.4‑1.7 % based on total resin formulation weight ‑ Incorporate the organoclay powder into resin under high‑shear dispersion before adding fillers, fibres and curing agents ‑ Sufficient high‑shear mixing is critical to complete silicate platelet exfoliation and develop target thixotropy; inadequate shear will lead to weak thickening and poor anti‑sag effect ‑ Complete laboratory pre‑formula testing for resin viscosity, anti‑settling, anti‑sag, curing profile and final mechanical property before mass‑scale production ‑ Avoid excessive addition which may cause overly high resin viscosity and impair flow‑out during casting and lamination

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 ‑ Keep bags tightly sealed after opening 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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Jishengya Technology

Shenzhen Jishengya Technology Co., Ltd. is located in Shenzhen, a special economic zone, and is a comprehensive technology enterprise integrating independent R&D, production and sales.