BYK-W 995

1 of 143 products in this brand
BYK-W 995 is a wetting and dispersing additive designed for filled unsaturated polyester and epoxy systems. It enhances the dispersion and wetting properties of these resin systems, making it suitable for various processing methods, including pultrusion. This additive is compatible with epoxies and unsaturated polyesters (UPE), and it functions as both a dispersant and a wetting agent. Available in liquid form, it helps prevent filler settling and improves the overall performance of filled resin systems.

Chemical Family: Organophosphates

Compatible Polymers & Resins: Epoxies (EP), Unsaturated Polyester (UPE)

Processing Methods: Pultrusion

Technical Data SheetSafety Data Sheet
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Enhanced TDS

Identification & Functionality

Chemical Family
Organophosphates
Manufactured By
BYK-Chemie
Plastics & Elastomers Functions
Dispersant,
Wetting Agent
Technologies
Elastomers,
Plastics
Product Families
Elastomers — Elastomer Additives
Performance Additives
Plastics — Polymer Additives
Performance Additives

Applications & Uses

Compatible Polymers & Resins
Epoxies (EP),
Unsaturated Polyester (UPE)
Plastics & Elastomers Processing Methods
Pultrusion
Use Level
0.5 - 2% additive (based on the resin for viscosity stabilization in BMC), 1 - 2% additive (based on the fillers for wetting and dispersing)
Product Applications

SMC, BMC, pultrusion
Special Features and Benefits
Wetting and dispersing additive for LP/LS and highly filled epoxy formulations. Also suitable for viscosity stabilization in BMC.

Recommended Use:

  • LP and Class A formulations
  • LS formulations
  • Epoxy systems
  • Pultrusion
  • Viscosity stabilization BMC

​​​​​​​Recommended Levels

  • 1-2% additive (as supplied) based on the fillers for wetting and dispersing.
  • 0.5-2% additive (as supplied) based on the resin for viscosity stabilization in BMC.

The above recommended levels can be used for orientation. Optimal levels are determined through a series of laboratory tests.
Incorporation and Processing Instructions: BYK-W 995 should be added to the resin mixture prior to homogenization and the addition of the fillers/pigments.

Properties

Physical Form
Liquid
Typical Properties
ValueUnitsTest Method / Conditions
Flash Point42°C-
Non Volatile Matter (at 150°C in 10 min)52%-
Water Contentmax. 0.13%-
Refractive Index (at 20°C)1.462--
Density (at 20°C)1.03g/ml-
Acid Value53mg KOH/g-
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Upper Exposure Limit10.8%V-
Kinematic Viscosity (at 40°C)27mm²/s-
Kinematic Viscosity (at 20°C)min. 20.000mm²/s-
Ignition Temperaturemin. 392°FDIN 51794
Density (at 20°C)1.025g/cc4 (Oscillating U-tube, at 20°C)
Lower Explosion Limit1%V-
Flash Point107.6°F48 (Abel-Pensky)
Vapor Pressure (at 20°C)5hPa-
Initial Boiling Point294.8°FDerived
Melting Pointmax. 32°F-
pH Value (at 20°C)3--
ColorLight yellow--
AppearanceLiquid--
Immiscible inWater--

Regulatory & Compliance

Chemical Inventories
DSL (Canada),
TSCA (USA)

Storage & Handling

Storage Information

Separation and turbidity possible. Mix well before use. Warm to 30-40°C and mix well.