Gloss Control With Confidence

Gloss Control with Allnex RESINS

Resins for every aspect of
Powder Coatings Gloss Control

allnex offers a broad range of performance polyester resins and additives for adjusting the gloss levels of powder coatings

The allnex Gloss Control palette

The CRYLCOAT®, SETAPOLL™ and SYNTHACRYL® polyester and acrylic products range from allnex offers resins for every gloss level for all aspects of Industrial and Architectural Coatings. Our polyester resins are designed to cure with all the major crosslinker groups: hydroxy-alkylamide (HAA), triglycidylisocyanurate (TGIC), glycidylester and isocyanates (PU).

Compared to hybrid powder coatings, the efficiency of common matting methods like adding fillers and matting aids to outdoor powder coatings, often results in a reduction of matting control. Most popular gloss levels of approximately 35±5 GU, 25±5 GU and even dull matte (<10 GU) are achievable only by the following methods:

  1. Matte Dry Blend (or 2 Component) Systems where two different individual powders are prepared that differ in reactivity and viscosity. Mixing of the two together leads to a controlled incompatibility and consequently to a controlled low gloss of the final finish.
  2. One Shot Matte (or Single Component) Systems where two individual resins of different functionality, reactivity and/or viscosity are combined together before the extrusion process. This method provides almost the maximum in gloss reduction but cannot be applied for all chemistries.

A whole variety of factors can influence the effect, specific pairs of resins provide unique performances to meet market demands in various coatings segments.

PRODUCT SELECTOR FOR GLOSS CONTROL POWDER COATING RESINS

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Features and Benefits

allnex's CRYLCOAT®, SETAPOLL™ and SYNTHACRYL® products bring a number of key benefits to the powder coating formulator. As well as global availability and consistent quality, our resins can you help you to:

Control gloss:

dull matte, matte and semi matte

Coat key substrates:

steel & aluminium

Control durability:

standard durable and superdurable

Improve formulation flexibility:

cure with range of crosslinkers

Additives of Choice for your
Gloss Control Powder Coating Resins

Allnex MODAFLOW® Powder 6000  flow aid has been created to assist the powder coating manufacturer in offering the best looking powder coatings, including preventing craters, fish-eyes and orange peel texture. MODAFLOW® Powder 6000 is a silica dispersed, silicone-free flow promoter supplied with 65% active compound content. It greatly improves cross-compatibility of powder coatings and their DOI.

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Defect Controller

MODAFLOW® Powder 6000More information

Significantly improve the appearance of your powder coating by:

    • Improving flow & levelling
    • Reducing orange peel
    • Increasing cross-compatibility between powder formulations

 

In practice there are often cases where it is desirable to reduce the curing temperatures or to shorten cure times of powders. That’s the moment so-called catalysts come into play. They have the ability to reduce the activation energy of the curing process and can exactly fulfill this requirement. In the form of a masterbatch powder coating, manufacturers are able to easily disperse a relative small amount of highly active catalyst into the bulk of the powder and to achieve an even effect.

The active ingredient is optimized to facilitate the conversion of the reaction between carboxy and epoxy that is the base for the curing process in hybrids and outdoor durable powders with TGIC and Glycidyl esters as hardeners. ADDITOL P 964 and ADDITOL P 966 are two masterbatches containing 10% of active ingredient on a carboxyl functional polyester carrier resin that will be built into the polymer backbone during the curing process. ADDITOL P 964 is based on a standard durable polyester carrier resin and is widely used in hybrids and TGIC formulations whereas ADDITOL P 966 has a superdurable polyester resin as carrier and is preferably added in superdurable coatings systems.

Preferred matting methods for outdoor durable powder coatings are matte dry blend (MDB) and one shot matte (OSM) formulations. For both methods the matting mechanism is mainly based on differences in reactivity of the components. The addition of catalysts to a high functional, fast reacting component can enlarge the delta in reactivity and hence provide a further down-glossing. In this way a certain resin combination can cover a whole range of different gloss levels.

Catalysts

Gloss Controller

    • Increases reactivity of hybrid, TGIC and Glycidyl ester based powder coatings
    • Adjustment to lower gloss levels
    • Easy processing and dispersion into the bulk of the powder
    • ADDITOL® P 966 suitable preferably for superdurable powder coatings

 

Whatever your customers coat, we have the right resin

Window frames

Sports & Gym Equipment

Appliances

Metal furniture

Advantages of Powder coating

Very environmental friendly

Powder coating enhances the appeal and longevity

Re-useable powder coating overspray

High heat and chemical resistance

Powder coating can be applied directly to the substrate (primers not needed)

Minimal powder coating waste

Powder coating is used to finish a vast variety of applications like architectural, furniture, agricultural and construction equipment, as well as household appliances.

Unlike liquid paints and coatings that are delivered through the evaporation of a solvent, powder coating is typically applied electrostatically, melted and cured under heat. Thermosetting powder coatings are usually based on functional, solid polyester resins as binder combined with hardeners, pigments and fillers. Modern polyester resins enable formulators to meet all requirements of high quality coatings in many application segments.

Applied as dry powders, the coatings are excellently suited for applications on metals like automobile parts, aluminum extrusions, household appliances, furniture as well as agricultural and construction equipment. Powder coatings show high heat, corrosion and chemical resistance, great hardness and flexibility. Furthermore, the coating process releases few to no volatile organic compounds (VOCs) rendering powder coatings an excellent choice for indoor and outdoor applications. Excess powder can also be collected and re-used to minimize product waste and pollution of surrounding areas.

Contact our Experts for more Information and Free Samples

Uwe Erwin Kubillus

Expert for Low Gloss Powder Coating Resins

Working for over 35 years in Coatings Technology

Broad experience in Powder Coatings Market in Asia, EMEA and US

Serves as Technical Service and Development Manager for the Powder Coating Resins Business of allnex
Uwe Erwin Kubillus