Zinc Salicylate Resin (Color Developer) is a specialized aqueous emulsion widely used in the paper industry, particularly for carbonless copy paper (CCP). It serves as the active component in the CF (Coated Front) layer. When pressure is applied to the paper, the microcapsules in the CB layer break, releasing leuco dyes that react with this Zinc Salicylate Resin to produce a clear, permanent, and high-contrast image. Our resin is optimized for high-speed coating lines, offering excellent rheology and low foaming characteristics.

1. Rapid Color Development Speed

• Advantage: Exhibits extremely high reactivity with leuco dyes like CVL (Crystal Violet Lactone).

• Benefit: Instant Clarity: Ensures that the copy image appears immediately and sharply even under light pressure, improving the efficiency of multi-part business forms.

2. High Optical Density & Image Stability

• Advantage: Contains a high concentration of active zinc sites (≥ 6.5%) within the resin matrix.

• Benefit: Long-Term Readability: Produces deep, rich colors that are highly resistant to fading, heat, and moisture, ensuring business records remain legible for years.

3. Optimal Particle Size Distribution

• Advantage: Features a fine and uniform particle size (≥ 65% below 1 micron).

• Benefit: Superior Coating Quality: Provides a smooth coating surface with excellent coverage and reduced wear on coating blades, leading to lower production maintenance costs.

Carbonless Copy Paper (CCP)

Used as the core color-developing agent in the CF (Coated Front) layer to react with leuco dyes for image formation.

Specialty Thermal Paper

Applied in certain thermal paper formulations to improve the stability and sensitivity of the color-developing reaction.

Security Printing & Forms

Utilized in the production of high-security receipts, tax forms, and express bills where fast and permanent imaging is required.

• Packaging: 1000kg IBC tanks or 200kg plastic drums.

• Storage: Store in a cool, dry, and well-ventilated place. Crucial: Protect from freezing (maintain temperature above 5°C) and avoid exposure to direct sunlight. Keep the container tightly closed to prevent surface skinning or contamination.

Color Developer; CCP Resin; Zinc Salicylate Emulsion; Salicylic acid zinc salt resin; Carbonless paper developer.

• Crystal Violet Lactone (CVL) (CAS 1552-42-7) —— Primary leuco dye for blue color development

• SBR Latex (CAS 9003-55-8) —— Binder for the color developer coating layer

• Kaolin Clay (CAS 1332-58-7) —— Filler and pigment used in CCP coating formulations

• Dispersing Agent (CAS 9003-04-7) —— Used to ensure uniform distribution of the resin emulsion

• Defoamer (Polyether type) (CAS 9003-11-6) —— Used to prevent air bubbles during the high-speed coating process

• Microcapsules (Dye containing) —— The reacting partner in CB (Coated Back) layers

Q: How does the particle size affect the performance of the carbonless paper?

A: Smaller particle sizes (especially below 1 micron) provide a larger surface area for the reaction with the dye, resulting in faster development and higher color intensity.

Q: Can this resin be mixed with other developers like Phenolic Resins?

A: Yes, Zinc Salicylate Resin is often blended with phenolic resins to balance cost and performance, specifically to improve the ageing resistance of the image.

Q: What is the recommended pH for the coating slurry when using this developer?

A: To maintain the stability of the emulsion, the final coating slurry should typically be maintained in the range of pH 5.0 to 9.0, depending on other additives.

Q: Does this product contain any harmful solvents?

A: No, this is an aqueous (water-based) emulsion and is considered more environmentally friendly and safer to handle than solvent-based developers.

Q: What happens if the product freezes during winter transport?

A: As an emulsion, freezing can break the stability of the particles and cause irreversible sedimentation. We use insulated containers or heated logistics for winter shipments.