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Description

EP0409 is a hybrid molecule with an inorganic silsesquioxane at the core and organic glycidyl groups attached at the corners of the cage. EP0409 serves as a high temperature reactive diluent in both aromatic and aliphatic epoxy resin and will increase rubbery plateau modulus. POSS molecules also have robust resistance to environmental degradation such as moisture, oxidation, corrosion and UV radiation. EP0409 is also excellent at dispersing silica particles.

Applications: additive for high hardness optical coatings.  Rheological diluent for highly filled resins and composites. Dispersant for CNTs and related carbons.

Key Properties

Formula Weight: 1337.88
Epoxy Equivalent Weight: 167
Appearance: Clear, pale yellow, viscous liquid

Refractive Index: 1.4813 @ 20.5°C
Viscosity: 4 – 6  Pa S @ 25 °C
Thermal Stability (5% wt loss): 365˚C
Solvent Solubility: THF, chloroform, toluene
Solvent Insolubility: water, hexane
Resin Solubility: aromatic and aliphatic epoxy resins

Relevant Literature
• Lower residual thermal stress in composites JAPS:B 46 (2008) 2719-2732
• Sun protection in greenhouse covers Adv. Mat. Res. Vols.113-114 (2010) 2077-2080
• Reduced degredation of polyoxymethylene Polymer Composites, Vol. 32, (2011) 1584-1592 • Room temperature VARTM for marine composites Polymer Preprints 2008, 49(1), 44

*Review of use in UV energy cure systems https://www.hybridplastics.com/wp-content/uploads/2022/07/2019-POSS-Additives-in-Energy-Cure-Coatings-Review.pdf

CAS: 68611-45-0

Authorizations: TSCA, INCI

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