Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

DSM Somos 9420 Epoxy Resin

DSM Somos 9420 Epoxy Resin is a high-performance photopolymer resin engineered for stereolithography (SLA) 3D printing. Developed by DSM Additive Manufacturing, this Somos series material delivers exceptional dimensional stability, low shrinkage, and superior surface finish. Ideal for functional prototypes and end-use parts requiring thermal resistance and mechanical strength, it cures rapidly under UV light with outstanding green strength and post-cure properties.
  • dsm somos 9420 epoxy resin_6d924465
  • dsm somos 9420 epoxy resin_6d924465

Features Of DSM Somos 9420 Epoxy Resin

  1. High-resolution photopolymer formulation optimized for stereolithography (SLA) 3D printing.

  2. Excellent dimensional stability and low post-cure shrinkage for precision functional prototypes.

  3. Superior surface finish and fine feature reproduction, supporting intricate geometries down to <100 µm details.

  4. Good mechanical strength and thermal resistance after UV curing and thermal post-cure.

  5. Low viscosity for efficient recoating and consistent layer formation in industrial SLA systems.

Typical Applications Of DSM Somos 9420 Epoxy Resin

  1. Functional prototyping in automotive and aerospace engineering.

  2. Manufacturing of high-fidelity concept models and design validation parts.

  3. Tooling patterns and master patterns for silicone molding and investment casting.

  4. End-use components requiring stiffness, heat resistance, and fine surface quality.

  5. Medical device prototypes requiring biocompatibility-compliant material behavior (ISO 10993 tested per request).

Specifications Of DSM Somos 9420 Epoxy Resin

Chemical TypeEpoxy-based photopolymer
Product FormLiquid resin (ready-to-use)
AppearanceAmber-transparent liquid
Primary ApplicationsStereolithography (SLA) additive manufacturing
Key FeaturesHigh resolution, low shrinkage, excellent green strength
BenefitsPrecision part accuracy, smooth surface finish, reliable build performance
Curing MechanismUV light-initiated free-radical polymerization
Storage Conditions20–25 °C, protected from moisture and UV light


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