Introduction - PST-1 STOV ENAMEL is a Polyester-Amino System. This has been specially formulated system to give a nonyellowing property, high gloss, and hard and durable finish. It is very good protective and decorative Stoving enamel for exterior purpose.
Range of Application - This system is excellent for home appliances, electrical fittings, toys, and automobile industries. It can be used for steel furniture, control panels, machinery's & medical equipments, etc. Resistance to oils, waters, solvents, alcohol's and limited tolerance to ketonic solvents gives this system wide range of application.
a) Ability to be cured twice without any shade variation (Stipple finishes are possible)
b) Excellent adhesion and flexibility and hardness.
c) Good mechanical strength.
d) Resistance to chemicals and water (direct immersion in chemicals is not advisable.)
e) Excellent mar resistance.
f) Resistance to Aliphatic Aromatic solvents, Alcohol’s, Grease and fats. (Direct immersion is not advisable)
g) Unaffected by oils and detergents.
h) Better UV Stability.
|Specially designed Polyester-Amino System with suitable Pigment combination.|
|Stoving||At 130°C for 30 minutes with 10-15 Mts.Air flashes off|
|For Stipple||First Stoving at 100-120°C for 15-20 Mts. Stipple Stoving at 130°C for 30 minutes|
|Storage life||8 months as long as the sealed containers are kept under normal temperature condition.|
|Application||By Brush, Spray and conventional spray. Use TC/PST/102 or TC/PST/101 Thinner|
|Packing Viscosity||70 to 90 secs at 30°C by FC/no. 4.|
|Grinding||Glossy finish - 7+ H G., S/G or E/G finish Min 6 H. G|
|Recommended||DFT 30 - 40 microns per coat.|
|Covering and spreading rate||10-12.5 sp. mtr / lt. by brush & 6-8 sq. sq.mtr. / liter by spray|
|Over-Coating||After baking at 100 - 120°C for 15 Minutes interval.|
|Thinner Intake||20-25% by vol.|
|Recommended application viscosity||20 - 24 sec. by Ford Cup No.4.|
|Gloss||As per requirement.|
|Flash Point||Above 30°C|
|Shades||As per requirement.|
|Scratch Hardiness||above 1500 gms.|
|Salt Spray Test (5% NaC1)||200 Hrs.|
|Resistance to Heat||150 deg. Celsius. (Test Method as per IS)|
Before application of topcoat PST-1 Stov Enamel do all necessary pretreatment of the Job. For MS Surface, remove grease, oil and other contamination by using degreasing agent. Blast cleans the surface for heavy rusting. Use de-rusting chemicals to clean the surface. Phosphating and passiviation should be done. Apply TC Yellow Zinc Chrome Primer or Red Oxide Zinc Chromate Primer. Stove or Air-dry above primer coat. Them remove the excess coating of primer and get 10 – 15 micron DFT. Apply second coat of TC Primer surface Grey or surfacer Grey-green (Stoving or Air drying type) Again remove excess coat. Fill up the putty if necessary. Proper curing of all primer coats and putties essential before application of ST-1 Stov Enamel to get proper adhesion.
Stir the ST-1 Stov Enamel thoroughly reduce the viscosity of paint by using TC/ST-102 thinner to 25-20 sec.
Stoving of the top coat at 120°C for 30 minutes. For stipple finish keep the viscosity 30-35 sec by B 4 Cup & apply at very low pressure to get std. Pattern.
After using the paint close the container immediately to avoid the solvent losses and moisture absorption in material. Do not apply in humid condition, during raining or mist and fog or at very low temperature.