DUPONT MARINE MS1 POLYURETHANE CLEARCOAT - DuPont Imron MS1 is a clear polyurethane coating designed to deliver excellent appearance, durability and robust application. This clearcoat is formulated to provide balanced performance including appearance, resistance to sag and productive dry times while still achieving a ready-to-spray VOC of less than 3.5 lbs/gal.

Imron MS1 is recommended for use with the marine Imron MS600 topcoats to improve the appearance of dark colors or metallics. In order to enhance appearance and durability, it is also recommended for topcoating properly prepared exterior wood surfaces. Product is sold by the gallon. 4 gallons per case.

MIX RATIO Thoroughly mix Imron MS1 prior to activation. Filter activated material prior to spray application.

Three Component System Parts by Volume: 2 Parts Imron MS1 Polyurethane Clearcoat : 1 Part DuPont 18100S Urethane Activator : 1 Part (Optional) Imron 187X5S Reducer.

Viscosity will be 10 - 13 seconds in a Zahn #3 cup unreduced.

SUBSTRATES AND SURFACE PREPARATION Surface preparation is critical to topcoat appearance. Follow topcoat recoat-window guidelines to ensure proper adhesion. Substrate should always be thoroughly wiped/tacked immediately prior to clearcoat application except for wet on wet application.

Substrate and ambient temperature must be between 50°F (10°C) and 110°F (43°C). The substrate must be at least 5°F (3°C) above the dew point. Relative humidity should be below 90%.

For optimum appearance, spray Imron® MS1 at 75°F (24°C) or warmer. Heating activated paint above 110°F (43°C) may cause gelation.

APPLICATION For DuPont Imron MS600 Topcoat:
DuPont Imron MS1 Clearcoat may be applied over Imron MS600 Topcoat after a one to two hour flash for solid colors, 2-3 hrs for metallics. For optimum appearance, allow topcoat to air dry 16 hours, sand with 400 grit paper finishing with 800 grit or smaller, clean and tack the surface. Sanding of the topcoat may affect color, test prior to finishing. Apply Imron MS1 using a crosscoat technique. Spray a wet first coat using a top-to-bottom motion. Spray a medium-wet second coat using a side-to-side motion to achieve 1.5 – 2.0 mils dry film build. Allow 30 minute flash times between coats. Allow clearcoat to cure a minimum of 72 hours prior to placing boat into limited service. Full cure is obtained in 2 weeks.

For Imron MS100 Basecoat:
Imron MS1 Clearcoat may be applied wet on wet over Imron MS100 Basecoat after a 10 to 40 minute flash. Spray 2 coats with a 30 minute flash between coats to achieve 1.8 to 2.2 mils dry film thickness (4 mils wet). Cure recommendations are the same as above. Refer to the Imron MS100 product data sheets.

Brushing:
Imron MS1 Clearcoat may be brushed when activated/reduced 4:1:1 with DuPont 18101S Brush & Roll Activator and DuPont 18701S Brush & Roll Reducer. Allow 30 -45 minutes between coats.

Exterior Wood:
Spray 2-3 coats over properly prepared exterior wood, allowing 30 to 45 minutes between coats.

Theoretical Coverage (at 1 mil dft) Ready-to-Spray: Unreduced - 839 ft2/gal.; Reduced 2:1:1 - 630 ft2/gal.

Recoat: When recoating Imron MS1 with itself, scuff sanding is required if the clearcoat has air dried for more than 16 hours or has been forced dried.

SHIPPING NOTE: Product may be considered hazardous to ship.

LINKS:

To view the PDS sheet for DuPont MS1: CLICK HERE

To view the MSDS sheet for DuPont MS1: CLICK HERE