Secret Revealed! Borchers® Carbon Black Dispersant Elevates Amino Baking Paint's Visual Appeal

Amino Baking Paint is a category of thermosetting coatings that primarily use amino resins (e.g., melamine-formaldehyde resins) as the main film-forming substance. 

Renowned for their exceptional mechanical properties, weather resistance, and decorative appeal, these coatings are widely applied in industrial sectors such as automotive, household appliances, and metal products.

Part   01 Fundamental Crosslinking Reactions

The "fundamental crosslinking reaction" in amino baking paint

involves reactive groups in amino resins

(e.g., hydroxymethyl, alkoxymethyl groups)

undergoing polycondensation with functional groups

such as hydroxyl groups in other resins

to form a three-dimensional network structure.

This crosslinking reaction is the critical step

for curing amino baking paint,

ultimately determining the performance

and quality of the paint film.

When HMMM (hexamethoxymethylmelamine) is used as crosslinking agent:

The reaction extent between acrylic resin and amino resin is relatively low below 100°C, less than 20%. When temperature rises above 150°C, the crosslinking reaction gradually intensifies, with reaction extent slowly increasing along with temperature. When temperature reaches 200°C, the reaction extent can approach 90%.

Part 02 Performance Advantages of Amino Baking Paint

• One of the outstanding characteristics of amino baking paint is its excellent adhesion and hardness. It can tightly adhere to various substrate surfaces, effectively preventing erosion from moisture, corrosive media, and UV radiation, significantly extending the service life of coated objects.

• Simultaneously, after high-temperature baking and curing, the paint film exhibits high hardness and strong wear resistance. Even when subjected to daily scratches and abrasion, it maintains good appearance and protective functions.

• In terms of color performance, amino baking paint also demonstrates exceptional capabilities. It can be formulated into a rich variety of colors to meet customers' personalized aesthetic needs. Whether vibrant solid colors or complex and delicate metallic textures and pearl effects, all can be perfectly achieved with amino baking paint.

Part 03 Borchers® High-Performance Dispersants

Organic pigments and carbon black, as the core components of coating coloration, have their color development performance and dispersion characteristics directly affecting key indicators of the coating such as color saturation, hiding power, and durability.

Carbon black, as a functional material, plays an irreplaceable role in many fields. Large quantities of carbon black are used in tires and rubber to enhance mechanical properties and wear resistance. 

Carbon black pigments are equally suitable for applications in automotive, industrial, and marine protective coatings, where they provide excellent color and hiding power, ultimately improving coating performance.

Although carbon black pigments inherently possess outstanding hiding power, Borchers® high-performance dispersants can elevate their jetness to a new level.

Borchi® Gen 0451

Borchi® Gen 0451 is a 100% polymeric non-ionic carbon black pigment dispersant. This dispersant provides better fluidity in the dispersion of carbon black pigments and improves the color development of difficult-to-disperse high-pigment carbon black in both water-based and solvent-based systems. It offers shorter grinding time, higher gloss, better pigment paste fluidity, and long-term viscosity stability.

The use of Borchi® Gen 0451 dispersant improves the jetness of carbon black pigments.

Borchi® Gen 0451 dispersant provides higher jetness and blue undertone.

It significantly enhances the gloss performance of carbon black pigments, with higher gloss indicating better durability in carbon black coatings.

Borchi® Gen 1051 Dispersant

• Specifically designed for dispersing organic blue, green, and red pigments

• Low-viscosity dispersion paste

• Provides high transparency of pigment paste

• Long-term dispersion stability

When applied in acrylic amino baking paint for automotive coatings, Borchi® Gen 1051 offers higher transparency and better CAB compatibility.

After two weeks of heat storage at 50°C, Borchi® Gen 1051 demonstrates better color stability.

Comparison between Borchi® Gen 1051 and Borchi® Gen 0451

1. Performance comparison of carbon black pigment pastes

Comparison between Borchi® Gen 1051 and Borchi® Gen 0451

They show nearly identical performance in carbon black dispersion.

2. Preparation of test panels in CAB coating systems for comprehensive performance comparison

Test results of the panels show nearly identical outcomes between the two formulations.

Comparison between Borchi® Gen 1051 and competitor dispersants

Conducted in amino baking paint

The test evaluates dispersant performance in amino baking paint under high-temperature conditions. The paint formulation consists of polyester resin combined with amino resin and blocked isocyanate, with curing conditions of 140°C for 30 minutes. Test results show that when blocked isocyanate is present, test panels made with competitor dispersants exhibit haze after high-temperature baking, while Borchi® Gen 1051 shows no such issue at all.

For samples or technical details about Borchers® high-pigment carbon black dispersants, scan the QR code or leave a message. We offer expert support.