Two pack anticorrosive Polyurethane primer for use on steel surfaces; this primer is ideally designed for coastal environments performing excellent anticorrosive chemical resistant coating. This primer can be over-coated with Polyurethane paints, Chlorinated Rubber paints coatings & Epoxy paints, Epoxy based coal tar coatings.
THE RANGE OF APPLICATION:
Polyurethane Primer is undercoat for Polyurethane, Epoxy and Rubber paints, for various Fertilizer Industries, Refineries, Chemical Plants, Food Industries, Pharmaceutical Industries, Tanks, Pipelines and Structural Steel work, Bridges. This system is also useful for maintenance coatings. Resistance to Oils, Alcohol’s, Fats, Solvents and Water gives wide range of application in chemical plants. Good electrical properties give application in panel work
KEY PROPERTIS OF SYSTEM:
1. The ability to be cured over wide range of temperature.
2. Excellent adhesion.
3. Withstand up to 100° C dry heat.
4. High mechanical strength.
5. Gives good adhesion to topcoat of various paints.
6. Unaffected by oil, grease and aliphatic and aromatic solvents, acid and alkalis.
|PRODUCT DATA ( TUFF COATS PU-101 PAINT\Non-Yellowing Grade )|
|Composition||Base: Specialized Polyester Polyol.
Hardener: Clear Blocked Polyisocynate.
|Mixing Ratio||Base: Hardener 4:1|
|Pot Life at 30° C||3 - 4 Hours|
|Application||By Brush, Roller, Airless Or Conventional Spray|
|Recommended DFT||25-3 0µ|
|Covering Capacity||10 -12 Sq Meter / Liter|
|% NVM of System||50% to 553%|
(Depending on Room Temp)
| Surface Dry: Maximum 45 Mts
Tack Free: Maximum 3 Hours
Hard Dry: Overnight/ Maximum 24 hrs
|Full Curing||5 - 7 Days|
|Over - Coating Interval Min:||Overnight Max: before 5 Days|
|Flash Point||Above 22° C|
|Colour||As per requirement.|
|Finish||Matt to Eggshell|
|Storage Life||Up to 8 Months in packed condition at Normal room temperature|
|Temperature Resistance||100° C for dry heat|
|Acids & Alkalis Resistance||Good|
|Solvent Resistance||Very Good|
|Ketonic Solvent Resistance||Limited|
|Water & Salt Resistance||Excellent|
|Flexibility||Very Good [passes 1/8" mandrel]|
|Weather Ability||Very Good with suitable Top Coat|
Before application of PU-102 Polyurethane primer, do all necessary pretreatment of the job. For M. S. surface, remove all grease, oil and other contamination by using proper degreasing chemical. Blast clean the surface for heavy rusting or remove with de-rusting chemicals to clean the surface. The surface should be clean and dry before application. Stir base thoroughly and then mix three parts base and one part hardener by volume to uniform consistency. Give 30 minutes stabilization period to the mix. And then again stir before application.
Mix the quantity perfect in ratio. Do not mix excess material, as the pot life of mixture is 4 hours only. Do not apply when temperature falls below 12°C or relative humidity rises above 55-60% or during rain, fog or mist.
Brushes and spray equipments should be cleaned properly after application; using PU-102 Thinner otherwise equipment is liable to be damaged.
Stability of Hardener – Once the hardener container is opened; try to consume it immediately because it reacts with Hydroxyl groups present in atmosphere & it results in to geletion