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Polyglass Coatings G90 Low VOC Topcoat

Polyglass Coatings G90 Low VOC Topcoat is a two component, highly cross-linked, high performance polyester polyurethane coating providing a high gloss surface finish.

Product Type: 2K (2 component) Coating, Top Coat

Application Area: Cranes, Drilling Applications, Tanks, Travel Trailers

Features: Abrasion Resistant, Chemical Resistant, Color Retention, Excellent Gloss Retention, Excellent UV Stability, High Gloss, High Impact Resistance, High Performance, Low VOC

Application Method: Spray

Chemical Family: Polyurethanes (PU)

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Identification & Functionality

Chemical Family

Features & Benefits

Product Features
  • Excellent UV Stability, providing long term gloss and color retention
  • Outstanding chemical resistance
  • Outstanding abrasion resistance
  • Outstanding impact resistance
  • Solid Colors Only
  • VOC Compliant

Applications & Uses

Application Method
Recommended Uses

G90 Low VOC Topcoat is intended for industrial applications; either new build or maintenance. G90 Low VOC Topcoat is suitable for application on all Endura primers.

Industries:

  • Oilfield & Energy Services
  • Well Service Vehicles
  • Drilling
  • Tanks
  • Cranes and Construction Equipment
  • Waste and Recycling Industry
  • Garbage Trucks
  • Trailers and Rolling Stock
Mix Ratio

1 part by volume of component A and 1 part by volume of component B. The recommended temperature when mixed is 68-77°F (20-25°C). Other EX-2C B components are available for different ambient conditions and application requirements.

Surface Preparation

G90 Low VOC Topcoat can be applied over all Endura primer sealers and primer surfacers without sanding during their topcoat window. The topcoat window varies with each primer. If the primer topcoat window has been surpassed, the primer should be sanded with 240 – 280 grit sandpaper to achieve inter coat adhesion. All sanding dust must be blown off prior to application of the topcoat.

Application Method

G90 Low VOC Topcoat can be applied using most spray painting systems.

Note: Ensure that any solvent absorbent primer surfacers are properly sealed with a primer sealer prior to application of the topcoat.

Solid Colors: Apply two single wet coats allowing up to 30 minutes flash time between coats. It is recommended that a thinner first coat be applied at 1.5 - 2.0 mils wet, followed by a second wet coat of 2.0 - 3.5 mils wet.

Spray Gun Setup
Feed Type Fluid Tip Application Pressures (Heel of Gun) Fluid Delivery
Siphon Feed 1.6 - 1.8 mm 40 - 50 psi  
Gravity Feed 1.3 - 1.4 mm 30 - 40 psi  
Pressure Feed 1.0 - 1.8 mm 50 - 60 psi 10 - 14 oz/min
Air Assist Airless 9 - 17 Thou 1000 - 1800 psi  
Airless 11 - 13 Thou 1700 - 3000 psi  
Spray Viscosity

Polyglass Coatings G90 Low VOC Topcoat - Spray Viscosity

Note: Spraying viscosity and thinning will depend on ambient conditions, spray equipment used, and the desired surface finish. To maintain VOC compliance, if required, thin with Endura Low VOC topcoat Thinners/Reducers.

20% with FTH0021 – Low VOC Topcoat Thinner/ Reducer

20% with FTH0023 – Slow Low VOC Topcoat Thinner / Reducer

Film Build

G90 Low VOC Topcoat has a recommended film build thickness:

WFT (Unreduced) 2.5 - 4.5 mils

69 - 114 microns

DFT 1.5 - 2.5 mils

38 - 63 microns

Poor hiding colors film build may be higher.

Theoretical coverage at 1.0 mil (25 microns) Average DFT: 898 ft² per gallon at 100% transfer efficiency.

Dry Times
  20°C 30°C 40°C
Dust Free 2 Hours 1 Hours 30 Minutes
Full Cure 7 Days 5 - 6 Days 3 - 4 Days

Note: Dry Times are subject to ambient conditions (temperature and humidity) and good airflow and film build of the topcoat. For best results surface temperature must be 86°F (30°C) or less before topcoating. Maximum re-coat window without sanding is 16 hrs at 68°F (20°C). After 16 hours G90 Low VOC Topcoat must be sanded to achieve inter-coat adhesion. Mechanical sanding with 220 – 320 grit is recommended before topcoating.

Important Note: Ensure that no more than three coats of paint are applied in a 12-hour shift. This includes primer, mid-coat, topcoats, and clear coat. If more than 3 coats have been applied wait 10-12 hours to allow for proper solvent evaporation. The use of Super Catalyst II with Endura topcoats will accelerate drying times.

Top Coating Infomation

This Product can be top coated with the entire range of Endura topcoat products.

Clean Up

Clean all equipment immediately after use with Endura High Strength Gun Wash, or Endura EX-2C thinner.

Clear Coating

G90 Low VOC Topcoat can be topcoated with all Endura clear coats. If G90 is going to be clear coated the following minimum times before application of the clear coat are recommended:

  • Solid Colors: 4 Hours

The minimum clear coat times are based on based on recommended film build at 68°F (20°C) and 50% RH. The use of Supercatalyst I or II in the G90 will reduce these minimum times. Maximum re-coat window without sanding is 16 hrs at 68°F (20°C). After 16 hours G90 Low VOC Topcoat must be sanded to achieve inter-coat adhesion. Mechanical sanding with 400 grit is recommended before clear coating.

Component B Selector

G90 H.A.T. B – For use in high ambient temperatures above 86°F (30°C) 2 part by volume of component A and 1 part by volume of component B.

Properties

Finish (60°C)
High Gloss (90+GU)
Typical Properties
ValueUnitsTest Method / Conditions
Volume Solids Mixed (1:1)52 - 60%-
VOC Mixed (Unreduced)400.7g/lEPA Method 24
Specifications
ValueUnitsTest Method / Conditions
Solvent Resistance (100 MEK Rubs)No Failure-ASTM D4752
Impact Resistance (100 in. lbs, Direct and Reverse)No Failure-ASTM D2794
Flexibility (1/3 in. Mandrel Bend)No Failure-ASTM D2794
Service Temperature-40 to 182°C-
Hardness2H-ASTM D3363
Abrasion Resistance (1000 Cycles - CS 17, Loss)50.0mgASTM D4060

Regulatory & Compliance

Certifications & Compliance

Safety & Health

Environmental Conditions

For optimum coating performance product, substrate and ambient temperature should be between 68°F-77°F (20°C-25°C). To prevent condensation during application the surface temperature must be 5°F (3°C) or more above the dew point at all times.

Packaging & Availability

Ordering Information (Sizing)

Available in Gallons and 5 Gal Pails Other custom sizes may be available.

3 Mixed Gallon (946 ml)
Comp A CLRGXXXXX-030 1 Gallon (3.78 L)
Comp B FUB0502-030 1 Gallon (3.78 L)

 

15 Mixed Gallons
Comp A CLRGXXXXX-050 5 Gallons (18.9 L)
Comp B FUB0502-030 5 Gallons (18.9 L)

Storage & Handling

Pot Life (25°C, 50% RH)
8 - 10 Hours
Shelf Life
3 Years (Component A, 25°C), 2 Years (Component B, 25°C)