What is Polyurethane [PU]?
Poly Urethane finish/paint is a versatile two component painting system with polyol as component - A and a poly iso- cyanate as component - B.
Can I apply MRF Wall coat PU on an already painted wall (emulsion)?
No. Any water based system if painted earlier, is, to be removed by scuffing the surface thoroughly. Then MRF WallCoat PU can be applied. [Refer to Technical Data sheet or Application procedure].
If you cannot clean the surface thoroughly, then MRF WallGarde can be applied (This is a Non - PU system that is based on French Technology).
Can I apply on an already painted wood [Enamel]?
Yes. First, the enamel painted surface has to be thoroughly scrapped and the loose particles have to be blown away. Then MRF MetalCoat shades [100 % Polyurethane Premium Finish] can be applied.
MRF Durothane [Economical 100 % Multipurpose Polyurethane paint] can be directly applied on Enamel painted surface.
Can I paint on wood surfaces that are already painted with Single pack PU?
Yes. But the surface which is smooth has to be roughened by thorough emerying and scuffing, ensuring the complete removal of loose particles by blowing air.
The substrate can then be coated with any of the following:
- MRF Treat wood -Glossy / Matt
- MRF Metal Coat - Metallic / Glossy / Matt
- MRF Cento Interior PU
- MRF Cento Exterior PU - Glossy / Matt
- MRF Wood coat - Glossy /Matt
- MRF Wood coat Exterior Glossy/ Matt finish
- MRF Melamine - Glossy / Matt / Satin
- MRF Melamine water white (clear) -Glossy / Matt
Can I Paint with MRF PU paint on wood which is already painted with NC finishes/ French Polish?
Yes. But only MRF Melamine (Glossy, Matt and Satin Finishes) can be used on wood that is already painted with NC finishes/French Polish.
What are the advantages of PU paints? Why should I go in for PU paint?
The main advantages of PU paints are:
- They are Anti fading (No colour deviation for a long period)
- They are Anti Chalking (No deterioration of paint film)
- They have excellent Gloss retention (Retention rate is 95%)
- They are flexible and hence withstand thermal expansion.
- They have excellent anti corrosion properties(especially saline corrosion - best meant for seashore areas
- They have excellent abrasion resistance.
- They are the best against bio-degradation like fungi, algae and moss.
- They have very high solvent and chemical resistance
- They have excellent UV Resistance.
Therefore it is advantageous to go in for PU finishes.
Where will I get the PU finishes/ paints?
MRF paints are available in all leading paint shops (dealers) in metros, cities, major towns and suburbs.
Select the dealer network link to look for your nearest dealer.
What are the Brands for different Substrates?
In a nutshell the following are the brands
| Substrate |
Brand |
Remarks |
| Walls |
MRF wall coat |
PU finish applicable on exterior and Interior. |
| Walls |
MRF Wall Garde |
Pliolite Resin based. Applicable on moist wall. Millimicron layer of paint gets discharged with every rain, taking with it the dust, deposits on the wall and hence the finish looks fresh for a number of years.
|
| Wood |
MRF Wood coat Exterior |
Premium PU finish .Available for exposed Doors and windows . Available in clears (matt and Glossy) |
| Wood |
MRF Woodcoat |
Premium wood finish for the interior Wood substrates. |
| Wood |
MRF Treatwood |
Economy PU finish for interior. Sealer coat application followed by clear coats [Glossy & Matt] |
| Wood |
MRF Cento Exterior |
For exterior application |
| Wood |
MRF Cento Interior |
For interior application |
| Wood |
MRF Melamine |
For Interiors (non PU) |
| Wood |
MRF Melamine Water White |
Extremely clear finish portraying Wood grains (non PU) |
| Metal |
MRF Metalcoat |
Multipurpose 100 % PU ---On all kinds of Metal. Long lasting finish. Available in glossy, metallic and opaque shades. |
| Metal / Wood |
MRF Durothane |
Better than 1st quality Enamel. Economy PU finish for Interior and exterior. |
| Plastics |
MRF Vapocure |
Sprayed inside a dust free atmosphere and done by MRF Franchisee network. |
| Plastics |
MRF Metalcoat |
Air drying PU . Done conventionally. |
Advantage of PU over NC & Enamels
| S.no. |
Properties |
PolyUrethane |
NC |
Enamel |
| 01. |
Initial Gloss |
90+ |
70+ |
90+ |
| 02. |
Gloss after 100 Hrs UV |
90+ |
chalks & becomes matt |
chalks & becomes matt |
| 03. |
Drying Time |
SD -30 min |
SD -10 min |
SD -2 hrs |
| TF - 3 hrs |
TF - 2 hrs |
TF -8 hrs |
| HD - 16 hrs |
HD - 3 hrs |
HD - O/N |
| RC - O/N |
RC - 4 hrs |
RC - O/N |
| 04. |
Rubbing and Polishing |
Possible but Not required |
Must |
Not Possible |
| 05. |
Exterior durability UV - Resistance |
Excellent (1000hrs) |
poor (within 100hrs) |
poor (less than 100Hrs) |
| 06. |
Humidity/Salt spray |
>1000Hrs |
<300Hrs |
<100Hrs |
| 07. |
Non Yellowing |
Excellent |
Poor |
Poor |
Legend
- SD : Surface dry
- TF : Tack free
- HD : Hard Dry
- RC : Recoatability
- O/N : Overnight
MRF Decorative Finishes ----Brands Available
Wall Finish
- MRF New WallCoat
- MRF Durodec
- MRF WallGarde
Metal Finish
- MRF Metalcoat
- MRF Durothane
Wood Finishes
- MRF Woodcoat Exterior
- MRF Cento Exterior
- MRF WoodCoat
- MRF Cento Interior
- MRF Treatwood
- MRF Melamine Water White
- MRF Melamine
- MRF Freshwood
- MRF Woodstains
- MRF Floorcoat
- MRF Metalcoat [Clears / Glossy / Matt/ Metallic shades ]
Plastic
- MRF Metalcoat
- MRF Durothane
MRF Finishes are also available for Industrial applications [Acramel , High solid Stoving Enamels , Thermo Setting Acrylics , Maintenance Coatings products. Refer to Product section for more details.]
Other range of Products
- MRF Glasscoat
- MRF Vapocure
- MRF Autocoat
- MRF Special Effects
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