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

Wacker PDM Hydroxyl Silicone Emulsion

Wacker PDM Hydroxyl Silicone Emulsion is a high-performance, anionic hydroxyl-terminated polydimethylsiloxane emulsion from Wacker’s PDM series. Designed for textile softening, paper coating and silicone modification, it offers excellent compatibility, low viscosity, and reactive Si–OH groups for crosslinking. Eco-friendly, stable in hard water, and easy to process—ideal for industrial applications requiring durable hydrophobicity and smoothness.
  • wacker pdm hydroxyl silicone emulsion_c3a20190
  • wacker pdm hydroxyl silicone emulsion_c3a20190

Features Of Wacker PDM Hydroxyl Silicone Emulsion

  1. Reactive hydroxyl-functional silicone polymer enables covalent bonding with substrates and crosslinking in formulations.

  2. Stable anionic O/W emulsion with excellent shelf life and freeze-thaw resistance under recommended storage conditions.

  3. Low surface tension and high spreading coefficient enhance wetting and leveling on diverse substrates including plastics, metals, and textiles.

  4. Compatible with common water-based systems such as acrylics, polyurethanes, and melamine-formaldehyde resins.

  5. Enables durable hydrophobicity, improved slip, and reduced friction without compromising adhesion or film integrity.

Typical Applications Of Wacker PDM Hydroxyl Silicone Emulsion

  1. Textile finishing for soft hand feel, water repellency, and anti-static performance.

  2. Leather conditioning and topcoats to improve flexibility, grain definition, and surface protection.

  3. Coatings additives for architectural paints, industrial primers, and wood finishes to enhance mar resistance and substrate compatibility.

  4. Release agents in rubber and composite molding processes where controlled surface energy and non-migration properties are required.

Specifications Of Wacker PDM Hydroxyl Silicone Emulsion

Chemical TypeHydroxyl-terminated polydimethylsiloxane (PDMS) emulsion
Product FormAqueous anionic emulsion
AppearanceOpaque white to slightly bluish liquid, homogeneous
pH (1% aqueous solution)5.0 – 6.5
Solids Content30.0 ± 1.0 wt%
Viscosity (25°C, Brookfield RVT, spindle #3, 20 rpm)100 – 400 mPa·s
Particle Size (D50)0.15 – 0.35 µm
Storage Stability (25°C)≥ 6 months in unopened original container


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