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MG Chemicals 844WB - Water-based ESD Safe Coating

844WB is a one-part, clear, water-based ESD paint made from a high quality aliphatic polyester urethane latex. It adheres strongly to plastics, paints, metals, and many other surfaces. The cured coating is flexible, durable, and will not crack, chip or peel. This non flammable, low odor, low VOC coating is used in electronic assembly lines to protect against electrostatic charge build-up on tools, production conveyor and bumpers, assembly trays, workstation surfaces, and enclosures. 844WB can be applied by roller, brush, manual and selective spray equipment.

Product Type: 1K (1 component) Coating, Waterborne Coating

Features: Anti-Static, Chipping Resistance, Crack Resistant, Durable, Excellent Flexibility, Fast Drying, Good Adhesion, Low Odor, Low VOC, Peel Resistance, Static-Dissipative

Application Area: Industrial Conveyors

Compatible Substrates & Surfaces: Metal, Painted Surfaces, Plastics

Application Method: Brush, Roller, Spray

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Knowde Enhanced TDS

Identification & Functionality

Features & Benefits

Key Attributes
  • Permanent static dissipative coating
  • Non-flammable, low odor, and low VOC
  • Ready to spray
  • Meets ANSI/ESD-S20.20
  • Reworkable
  • Strong adhesion with excellent flexibility

Applications & Uses

Application Area
Application Method
Compatible Substrates & Surfaces
Recommended Preparation

Plastic - Clean the substrate with Isopropyl Alcohol, MG #824, so the surface is free of oils, dust, and other residues.
Drywall - For new drywall, apply directly on top of the drywall primer, after the primer has properly cured. When applying on top of existing paint, first wash the wall with a solution of T.S.P. diluted with water at a 1:10 ratio, to ensure good adhesion.

Paint Roller

This product may be applied with a standard paint roller. Thinning is not required.

Manual Spray Guns

Use a standard fluid nozzle gun to spray the diluted paint. The settings listed below are recommendations; however, performance will vary with different brands:

LVMP HVLP
Nozzle tip diameter 1.2–1.4 mm

1.2–1.4 mm

Inlet pressure 5–15 psi 5–15 psi
Air flow 10–15 SCFM

8.3 SCFM

Air cap 5–10 psi 5–10 psi

When using a pressure pot and agitator, keep the agitator at low mixing speed with air pressure of 20–50 psi. Use the lowest pressure necessary to keep the particles suspended.

Selective Coating

For higher volume applications, paint can be applied via selective coating equipment. Use a system with constant fluid recirculation to keep the particles from settling in the lines. A fluid nozzle ranging from 1.2 mm–1.4 mm diameter and 5–10 psi fluid pressure is recommended depending on nozzle size. Thin the paint to adjust the viscosity to the level appropriate for the valve being used.

Clean-up

Clean the spray system and equipment with tap water after use.

Properties

Physical Form
Physical Properties
ValueUnitsTest Method / Conditions
Density1.03g/mL
Typical Properties
ValueUnitsTest Method / Conditions
Viscosity (at 25 ˚C)128cP
Calculated VOC71.3g/L
Cured Properties
ValueUnitsTest Method / Conditions
Surface Resistance (at 50 μm)5.6 x 10⁷Ω/sq
Service Temperature Range-40 to 120˚C
Uncured Properties
ValueUnitsTest Method / Conditions
Percent Solids29%

Regulatory & Compliance

Quality Standards

Technical Details & Test Data

Cure Instructions

Cure the paint in an oven at one of these time/ temperature options:

Temperature 45 °C 65 °C 80 °C
Time 45 min 30 min 10 min
Usage Parameters
Recoat Time 5 min
Cure Times

45 min @ 45 ˚C

30 min @ 65 ˚C

10 min @ 80 ˚C

Recommended Film Thickness 50 μm
Minimum Film Thickness 40 μm
Theoretical Coverage @ 2 mil 36000 cm2/L

Packaging & Availability

Packaging Type
Packaging and Supporting Products
Cat. No. Packaging Net Volume Net Weight
844WB-850ML Can 850 mL 878 g
844WB-3.6L Can 3.60 L 3.72 kg

Storage & Handling

Shelf Life
2 Years
Storage

Store between 4 and 40 ˚C in a dry area, away from sunlight (see SDS).