Indoor Polyester Powder Coating MT-300

Indoor Polyester Powder Coating MT-300 About

Product description

MT-300 is a series of polyester resin based thermo-setting powder coatings formulated using TGIC. The pigments used in the MT-300 series restrict the field of application of this powder coatings class to interior uses. MT-300 is designed for interior decoration such as, metal furniture, shop fittings, shelves, light fittings.

Powder properties

	Typical value
Chemical Type	Polyester TGIC
Density	1.2 1.9 g/cm, depending on colour and effect
Recommended film thickness	60 90m
Shelf life	12 months below 30 C
Storage Conditions	(open boxes must be resealed) Dry, cool conditions
Curing schedule	12-24 min at 180C 8-16 min at 200C 4-10 min at 210C (at object temperature)

Pre-treatment

Galvanised steel requires surface preparation by either multi-stage pretreatment using either zinc phosphate or chromate conversion or controlled sweep blasting. Depending on the type of galvanizing, degassing or use of anti-bubbling additives may be required follow the procedural advice of the pretreatment supplier. Iron phosphate and particularly Zinc phosphating of ferrous metals improves corrosion resistance. Aluminium substrates may require a chromate conversion coating.

Test conditions

Actual product performance will depend upon the circumstances under which the product is used. Testing has been determined under laboratory conditions using the following application properties and is for guidance only.

Pre-treatment	Zinc Phosphate
Substrate	Polished steel
Curing schedule	12 min at 200C (object temperature)
Film Thickness	60 70m

Mechanical tests

	Typical value	Method/standard
Adhesion	Class 0	ISO 2409 (2 mm Crosshatch)
Erichsen cupping	Pass 5 mm	ISO 1520
Flexibility	Pass 5 mm	ISO 1519
Hardness	Pass no penetration to substrate	ISO 1518-1 (2000g)
Impact resistance	30 kg.cm	ISO 6272-2 (d/r)

Application

Powders can be applied by manual or automatic electrostatic spray equipment. A good protection is linked with the recommended film thickness. Bonded products have better application properties than blended products (more stable) but attention should still be paid to line settings in order to avoid marble effect and changes in aspect after recycling. Different substrates (aluminium, steel, galvanized steel), use of primer, and big changes in film thickness may give a different aspect. Products with different codes should not be mixed even if same colour and gloss. It is recommended that for consistent application and appearance product be fluidized during application. MT-300 powder coatings can be applied by corona electrostatic or tribostatic equipment. However, the aspect obtained by tribo static equipment may vary when compared to electrostatic application and/or our color card.

Versatile Color and Finish Options

MT-300 Polyester Powder Coating offers a diverse palette, with the option to select from multiple RAL colors or request custom shades. Its finishes range from matte to glossy, enabling both functional protection and aesthetic appeal for indoor metal furnishings, fixtures, and architectural elements.


Eco-friendly and Lead-free Protection

Formulated without harmful lead compounds, MT-300 meets stringent environmental standards. It is a responsible choice for commercial and industrial applications, ensuring safe usage and superior surface protection against everyday wear and corrosion indoors.


Convenient Packaging and Storage Guidelines

The powder comes in fine solid form, typically packed in 25 kg plastic-lined woven bags or sealed drums, with other sizes available on request. For optimal shelf life, MT-300 should be stored in cool, dry, and well-ventilated areas, away from direct sunlight and humidity.