ODB-2: High-Performance Dye for Thermosensitive Imaging in Printing and Sensing

2-Anilino-6-Dibutylamino-3-Methylfluoran (ODB-2) is a high-performance leuco dye for thermosensitive imaging. A pale yellow to orange crystalline powder (molecular formula: C₂₈H₃₇N₃O₂), it dissolves well in organic solvents like toluene. Its fluorane ring structure with amino substituents enables reversible color change: colorless at room temperature, it turns vivid deep blue/black when heated (80–120°C) with an acidic developer.

Key traits: high color intensity for sharp images, rapid thermal response, good light stability, and compatibility with diverse developers/binders—ideal for thermal paper, temperature sensors, and related applications.

 

How ODB-2 Works

The functionality stems from its chemical structure. The fluorane ring and substituted amino groups in ODB-2 undergo a reversible chromogenic reaction when exposed to heat (in the presence of an acidic developer). At room temperature, ODB-2 exists in a colorless leuco form. When heated, it rapidly transforms into a highly colored form (typically deep blue or black), enabling the formation of visible images or marks. This thermally induced color change is swift and stable, ensuring clear and durable prints or sensor readings.

 

 

Applications Across Industries

Key Applications (for thermosensitive imaging-dependent sectors)

1. Thermal Paper Printing: Acts as a core color-forming agent in thermal receipt paper, label paper, and fax paper. Enables instant, high-contrast ink-free printing (e.g., POS systems, logistics labeling).

2. Temperature Sensing: Used in temperature indicator labels/inks to monitor temperature changes in cold chains (pharmaceuticals, food), industrial processes, and electronics. Changes color at specific temperature thresholds to indicate heat exposure.

3. Security & Anti-Counterfeiting: Integrated into specialty inks for secure documents (banknotes, ID cards) and packaging. Color only appears under targeted thermal activation, boosting fraud prevention.

Advantages Over Traditional Dyes

1. High Sensitivity: Triggers color development at moderate temperatures (typically 80–120°C), ensuring fast printing/sensing speeds and energy efficiency.

2. Color Stability: The colored form resists fading under normal light and ambient conditions, guaranteeing long-lasting image clarity (critical for archival or long-term labeling).

3. Strong Compatibility: Works seamlessly with various acidic developers and paper coatings, facilitating easy formulation into different thermosensitive products.

4. Low Toxicity: Designed to be eco-friendly and safe for end-users when handled per standard protocols.

 

Market Supply & Our Expertise

With 15 years in specialty dyes and thermosensitive materials, DALIAN SINOBIO CHEMISTRY CO., LIMITED. is globally recognized for quality and innovation. Our ODB-2 production meets ISO 9001 standards, ensuring consistent purity and performance.

*Custom Formulations: Tailored to needs like color intensity and activation temperature for unique printing/sensing.

*Tech Support: On-site guidance for formulation optimization and lab testing for thermal performance.

*Global Reach: Exported to over 30 countries (Europe, North America, Asia-Pacific) with reliable supply and fast delivery.

We offer competitive pricing and solutions from chemists focused on solving thermosensitive imaging challenges.

 

Why Choose DALIAN SINOBIO CHEMISTRY CO., LIMITED?

With 15 years of expertise, we're a trusted leader in specialty dye innovation, especially thermosensitive materials. Our commitment to quality, accessibility, and customer focus wins global recognition.

*Comprehensive Service: From thermosensitive dyes like ODB-2 to color-formulating solutions, we tailor products for thermal printing, temperature sensing, and security applications.

*Technical Expertise: Our R&D team optimizes formulations for specific thermal and chemical needs, ensuring maximum color intensity, stability, and sensitivity.

*Global Reach: Products are certified in over 30 countries, supported by 24/7 technical assistance and efficient logistics.

ODB-2 advances thermosensitive imaging. Combined with our proven record, its unique properties offer industries a reliable, high-performance tool for precise imaging and sensing. Whether for thermal receipt systems or advanced temperature indicators, explore how our solutions elevate your operations.

Contact Us today to discuss ODB-2 or other specialty dyes. Let's enable clearer, smarter, and more efficient applications together.