Pre-Mixed Solvent for PU Paint

The pre-mixed solvent for PU paint, formulated by K-Chem, is developed based on real-world research and the specific characteristics of PU coatings. It enhances solubility, provides precise evaporation rate control, and ensures optimal viscosity stability. This product offers a comprehensive solution for applying coatings on wooden furniture, metal, or industrial surfaces combining convenience with quality assurance. So, what makes the pre-mixed PU paint solvent by K-Chem superior, how should it be used, and what precautions should be taken? Let’s explore in the article below.

What is Pre-Mixed Solvent for PU Paint?

Pre-mixed solvent (thinner) for PU (Polyurethane) paint is a liquid chemical mixture, usually composed of volatile organic compounds (VOCs), designed to dilute PU paint, adjust viscosity, support application methods (brushing, rolling, or spraying), and improve the coating’s performance.

K-Chem’s pre-mixed solvent is manufactured to be compatible with both two-component PU (including PU resin and hardener) and one-component PU paints. It helps produce a smooth, uniform coating and enhances the aesthetic finish, particularly on surfaces like wood, metal, or concrete.

Superior Features of K-Chem’s Pre-Mixed PU Paint Solvent

The PU paint solvent researched and developed by K-Chem possesses the following outstanding properties:

Excellent Solubility

K-Chem’s pre-mixed PU paint solvent is blended from various groups of organic solvents (esters, ketones, aromatics,…) in optimal ratios to effectively dissolve PU resins, hardeners, and additives. This results in a uniform paint mixture with no clumping or emulsification. Additionally, it enhances pigment dispersion, maintaining color stability without discoloration.

The pre-mixed solvent keeps the paint color stable and prevents surface discoloration. (Source: Collected)

Viscosity Control

Thanks to its carefully calculated formula, this solvent reduces the viscosity of PU paint to suit the application method (spraying, brushing, or rolling), ensuring a smooth, even coating without blotching.

Balanced Evaporation Rate

The evaporation rate is engineered to be fast enough for reasonable drying times (typically 2 – 8 hours depending on conditions), but not too fast—thus preventing issues such as air bubbles, wrinkling, or loss of gloss.

Enhanced Durability and Gloss

This solvent improves adhesion, hardness, and gloss of the PU coating, while also enhancing resistance to scratches, moisture, and chemicals.

Pre-mixed PU paint solvent provides strong adhesion and high gloss finish. (Source: Collected)

Chemical Compatibility

K-Chem’s solvent does not cause unwanted chemical reactions with PU resin or hardeners, preventing issues like sedimentation, clumping, or discoloration.

Safe and Low Odor

The solvent has a mild or non-pungent odor, reducing the risk of irritation during application especially important in sensitive environments like interior spaces, schools, or hospitals.

High Purity

It contains minimal impurities and is free from water or hydroxyl (-OH) groups, which could otherwise react with isocyanates in PU paint and compromise the coating’s quality.

Main Components Commonly Found in K-Chem Pre-Mixed Solvent for PU Paint

The main components include a blend of organic solvents such as Toluene, Butyl Acetate, MEK, DMC, BCS,… mixed in appropriate ratios to effectively dissolve and enhance the adhesion of PU paint.

Contact K-Chem for more detailed consultation on the composition used.

Instructions for Using K-Chem Pre-Mixed Solvent for PU Paint

Inspection:

Read the instructions on the PU paint and solvent containers.
Determine the mixing ratio (typically 5 – 10% solvent for 2-component PU paint, 1:1.5 for 1-component PU paint).
Prepare a clean container, stirring stick, gloves, mask, and safety goggles.

Mixing:

2-component PU: Mix the PU resin and hardener (at a ratio of 4:1 or 2:1) first, stir evenly for 3 – 5 minutes.
Pour the solvent into the container, add PU paint, stir for 5 minutes until smooth (viscosity similar to cream).
Test a small amount of paint to check the dilution level.

Apply a small amount of solvent to the surface using a brush to check for proper dilution (Source: Collected)

Application:

Apply with a brush, roller, or spray gun at 10 – 40°C with humidity below 85%.
Paint in thin layers and let dry for 4 – 8 hours before applying the next layer.
2-component PU: Use within 4 – 6 hours after mixing.

Apply evenly with brush, roller, or spray the K-Chem pre-mixed solvent on the surface (Source: Collected)

Cleaning:

Clean brushes, rollers, and spray guns with solvent immediately after use.

Storage Guidelines for K-Chem Pre-Mixed Solvent for PU Paint

Proper Storage Conditions:

Tightly seal the container immediately after use. Store in a cool, dry place (10 – 30°C), away from sunlight and heat to prevent solvent evaporation and component alteration.

Fire and Explosion Safety:

The pre-mixed PU solvent contains volatile compounds like xylene, toluene, or acetone – all flammable at low temperatures.
Store carefully. Keep away from fire, sparks, or non-certified electrical equipment.
During application, workers should wear protective gear to avoid inhalation or skin contact.
Avoid working in enclosed or poorly ventilated spaces. Apply in areas with natural airflow or specialized exhaust systems.
If the solvent comes into contact with skin or eyes, rinse immediately with clean water for at least 15 minutes and seek medical attention if necessary.

Proper Waste Handling:

Never pour into drains, sewers, or natural water sources.
Dispose of according to hazardous waste regulations.
Remaining solvent should be stored in a sealed, labeled container and handed over to licensed hazardous waste treatment facilities.

Keep Out of Reach of Children:

The pre-mixed PU solvent contains volatile chemicals that may be toxic if inhaled, contacted with skin, or accidentally ingested.
Store in a safe location, out of children’s reach.

K-Chem – A Trusted Provider of High-Quality Ready-to-Use Solvents for PU Paint

Headquartered in Hong Kong and part of the Kaiser International Group, K-Chem proudly stands as a pioneering brand in delivering high-quality specialized chemical solutions, meeting diverse needs in the fields of ready-to-use solvents for paint, printing ink solvents, and paint removers.

K-Chem products are certified to meet ISO 9001:2015 standards, ensuring compliance with customer and legal requirements, while continuously improving the system. With a mission to deliver outstanding value to customers through resource optimization, streamlined supply chains, and enhanced product quality, we are committed to understanding and fulfilling customer needs, driving operational efficiency, and constantly innovating to provide the best products and services.

K-Chem – A pioneering brand offering high-quality specialized chemical solutions (Source: Collected)

In addition, K-Chem boasts a team of experienced specialists, a flexible support policy, excellent after-sales service, and adaptable packaging and storage solutions always ready to advise the most suitable solution for each type of paint and surface treatment.

If you are looking for a trusted source of high-quality ready-to-use solvents for PU paint, K-Chem is your top reliable choice.

K-CHEM VIETNAM CO., LTD

Address: N6B Street, Lot F, Phu Chanh 1 Industrial Cluster, Phu Chanh Ward, Tan Uyen City, Binh Duong Province, Vietnam
Phone: +84 274 362 0218
Email: info@k-chem.vn

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