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MG Chemicals 844AR Liquid - ESD Safe Coating for Plastics

844AR is a 1-part, solvent-based, permanent electrostatic dissipative (ESD) coating. It adheres strongly to plastics, paints, metals, and many other surfaces. The cured coating is flexible, durable, and will not crack, chip or peel. The coating can be cured at room temperature or higher. 844AR is commonly used in electronic assembly lines to protect against electrostatic charge build-up on tools, production conveyor and bumpers, assembly trays, workstation surfaces, and enclosures.

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

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

Application Area: Industrial Conveyors

Compatible Substrates & Surfaces: Metal, Painted Surfaces, Plastics

Application Method: Spray

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Knowde Enhanced TDS

Identification & Functionality

Features & Benefits

Key Attributes
  • Dark gray, uniform and smooth ESD coating
  • Quick-dry
  • Strong adhesion with excellent flexibility
  • Does not contain toluene, xylene or MEK
  • Low VOC and HAP free

Applications & Uses

Application Area
Application Method
Compatible Substrates & Surfaces
Recommended Preparation

Clean the substrate with Isopropyl Alcohol, MG #824, so the surface is free of oils, dust, and other residues.

Brush

Thinning is not required for most brush applications.

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 spray system and equipment with MEK or acetone, MG # 434.

Properties

Physical Form
Physical Properties
ValueUnitsTest Method / Conditions
Density0.94g/mL
Typical Properties
ValueUnitsTest Method / Conditions
Viscosity (at 25 ˚C)8.6cP
Calculated VOC423g/L
Cured Properties
ValueUnitsTest Method / Conditions
Surface Resistance (at 50 μm)2.0 x 10⁸Ω/sq
Service Temperature Range-40 to 120˚C
Uncured Properties
ValueUnitsTest Method / Conditions
Percent Solids17%

Regulatory & Compliance

Quality Standards

Technical Details & Test Data

Cure Instructions

Allow to dry at room temperature for 24 hours, or cure in an oven at one of these time/temperature options:

Temperature 45 °C 65 °C 80 °C
Time 1 h 30 min 10 min
Usage Parameters
Recoat Time 5 min
Cure Times 24 h @ 22 ˚C
1 h @ 45 ˚C
30 min @ 65 ˚C
10 min @ 80 ˚C
Recommended Film Thickness 50 μm
Minimum Film Thickness 40 μm
Theoretical Coverage @ 2 mil 26800 cm2/L

Packaging & Availability

Packaging Type
Packaging and Supporting Products
Cat. No. Packaging Net Volume Net Weight
844AR-900ML Can 850 mL 799 g
844AR-3.78L Can 3.60 L 3.38 kg

Storage & Handling

Shelf Life
2 Years
Storage

Store between -5 and 40 ˚C in a dry area, away from sunlight (see SDS).