Guidelines for solvent selection by resin type for paints

Guidelines for solvent selection by resin type for paints

Table of Contents

1. Lacquer Thinner
………………………………………………………………………………………………………………………………………………………………………………3
2. Non-brushing
………………………………………………………………………………………………………………………………………………………………………………4
3. Melamine Paint Thinner
………………………………………………………………………………………………………………………………………………………………………………5
4. Acrylic Resin Paint Thinner
………………………………………………………………………………………………………………………………………………………………………………6,7
5. Electrostatic Coating and Thinners for Electrostatic Painting
………………………………………………………………………………………………………………………………………………………………………………8,9,10
6. Urethane Resin Paint
………………………………………………………………………………………………………………………………………………………………………………11,12
7. Epoxy Resin Paint Thinner
………………………………………………………………………………………………………………………………………………………………………………13
8. Plastic Paint Thinner
………………………………………………………………………………………………………………………………………………………………………………14,15
9. Printing Inks and Solvents
………………………………………………………………………………………………………………………………………………………………………………16,17,18
10. Cleaning Thinner
………………………………………………………………………………………………………………………………………………………………………………19,20
11. Circuliner
………………………………………………………………………………………………………………………………………………………………………………21,22

1. Lacquer Thinner

Lacquer thinner is used to dissolve components of lacquer paints such as nitrocellulose and alkyd resin, and its quick-drying properties enhance the efficiency of painting operations.

Lacquer thinner requires a formulation that adjusts the drying properties, taking into consideration the temperature, viscosity, and painting method. Proper selection of thinner influences the finish of the paint job, allowing for the reduction of paint viscosity with minimal use, and enhancing the adhesion and gloss of the paint film after drying.

To achieve this, it is essential to balance the formulation with low-boiling point solvents that reduce viscosity, and medium to high-boiling point solvents that improve the “spread” of the paint and the condition of the paint film after drying.

Our company offers about ten different types of lacquer thinners tailored to various applications, including those that do not contain PRTR Law designated substances, emphasizing environmental consideration. Here are some options we provide:

• PRTR-200 Lacquer Thinner
• PRTR-600 Lacquer Thinner

This allows customers to choose products that meet environmental standards while ensuring optimal painting operations.

2. Non-brushing

Brushing refers to a paint film defect where the paint becomes whitened during the natural drying process. Specifically, as the paint dries, the heat of evaporation from the thinner attracts moisture from the air. When this moisture is absorbed into the paint, the nitrocellulose in the lacquer can separate, causing a clouding or whitening effect. This clouding is not immediate but occurs during the complete drying process of the paint.

To prevent brushing, it is crucial to maintain an appropriate balance between the thinner and moisture. Specifically, using a slower-drying thinner can be effective. Thinners that easily mix with water can enhance the prevention of brushing, as they help to manage the rate at which the paint absorbs moisture during the drying process.

Our company offers products such as “Blue Non-brushing,” “Red Non-brushing,” and “Non brushing for Acrylic Urethane.” These products can achieve significant effects with just a small addition, effectively preventing the brushing phenomenon in the paint drying process.

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