Name: Evonik Dynasylan HYDROSIL 2929 Aqueous Siloxane
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of Evonik Dynasylan HYDROSIL 2929 Aqueous Siloxane

Water-based, VOC-compliant siloxane dispersion for environmentally responsible surface modification.
Provides durable hydrophobic and oleophobic properties without compromising substrate breathability.
Enables excellent adhesion promotion on mineral substrates such as concrete, mortar, and natural stone.
Stable in neutral to mildly alkaline aqueous systems; compatible with common waterborne coatings and renders.
Forms covalently bonded, abrasion-resistant siloxane networks upon curing at ambient conditions.

Typical Applications Of Evonik Dynasylan HYDROSIL 2929 Aqueous Siloxane

Protective impregnation for exterior concrete façades and architectural precast elements.
Hydrophobization additive in mineral plasters, stuccos, and EIFS base coats.
Surface treatment for natural stone, brick, and clay-based masonry to reduce water absorption and efflorescence.
Functional component in water-repellent repair mortars and conservation formulations for historic buildings.

Chemical Type	Aqueous dispersion of reactive alkylalkoxysiloxanes
Product Form	Liquid, ready-to-use dispersion
Appearance	Clear to slightly opalescent, low-viscosity liquid
pH (1% aqueous solution)	6.0 – 7.5
Solid Content (wt. %)	28 – 32
Density (20 °C)	Approx. 1.02 – 1.04 g/cm³
Primary Applications	Mineral substrate protection, hydrophobization, adhesion promotion
Key Features	VOC-free, non-hazardous classification (GHS), ambient-curing

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