Champion Inks® OPTI-974 Slow Thinner / Retarder – Superior Ink Performance | 66000 Series
Precision control for perfect prints.
Champion Inks® OPTI-974 Slow Thinner / Retarder is a high-performance additive engineered for 66000 Series screen inks, designed to deliver superior adhesion, flexibility, and drying control on even the most challenging substrates including polyurethane, leather, nylon, polyester, and rubber. It enhances ink flow, prevents premature drying, and ensures smooth, scuff-resistant prints that last under extreme conditions.
With excellent heat and chemical resistance, a durable 55D flexibility rating, and a professional gloss finish, OPTI-974 sets the standard for performance and reliability in industrial and specialty printing applications. Fully compliant with California Proposition 65 and RoHS safety standards.
Key Features & Benefits
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Superior Adhesion & Flexibility – Ideal for polyurethane, leather, nylon, and polyester substrates.
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Heat & Chemical Resistance – Withstands dry cleaning, abrasion, and exposure without compromising print quality.
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Scuff-Resistant Gloss Finish – Provides a flexible, glossy, and durable printed surface.
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Slow-Drying Formula – Prevents premature ink drying, especially in warm or humid conditions.
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Environmentally Compliant – Meets Proposition 65 and RoHS standards for safe, eco-conscious printing.
Ideal Substrates
- Polyamide (Nylon)
- Polyester
- Polyurethane
- Rubber
- Leather
- Cotton Denim
- Canvas
Product Performance & Finish
Finish: Smooth, flexible, and scuff-resistant gloss finish designed for durability and visual appeal. Perfect for applications requiring flexibility and resistance to environmental wear.
Ink Modification & Additive Guide
| Modifier |
Function |
Recommended Use |
| T-922 |
Prevents drying under humid conditions |
3–5% by weight |
| T-974 |
Slows drying / extends open time |
3–5% by weight |
| T-976 |
Reduces viscosity / enhances flow |
5–10% by weight |
| FA-011 Flow Agent |
Improves ink flow & surface leveling |
0.5–1% by weight |
| 66928 Match Base |
Extends color / reduces pigmentation |
As needed |
| 66PC850 Halftone Base |
Enhances fine detail printing |
As needed |
Coverage & Screen Recommendations
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Coverage: ~1,000 sq. ft. per gallon (250-mesh / 100T European screen)
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Mesh Count: 230–280 (92T–112T/cm European) for optimal precision
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Stencil Type: Optima EM-500 dual-sensitized or SBQ solvent-resistant emulsions
Drying & Curing Instructions
| Method |
Time & Temperature |
| Air Dry |
30 minutes (solvent evaporation) |
| Jet Dry |
20–30 seconds @ 135°F–180°F (37°C–83°C) |
Clean-Up Recommendations
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Standard Wash-Up: T-902 or T-925
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Eco-Friendly Alternatives: SC-500 Bio Wash-Up or SC-510 Instant Bio Wash-Up
- Ensures fast cleanup and long equipment life.
Available Packaging
- 1-Quart (0.945 L)
- 1-Gallon (3.78 L)
Safety & Handling
- Consult the MSDS before handling.
- Wear protective gloves and eye protection at all times.
- Ensure proper ventilation during application.
- Store in a cool, dry area away from direct heat and sunlight.
Why Choose Champion Inks® OPTI-974 Slow Thinner / Retarder?
Champion Inks® OPTI-974 delivers unmatched performance for screen printers tackling specialty materials. Its slow-drying, flexible formulation enhances flow, prevents drying, and ensures durable, vibrant results across tough substrates such as leather, nylon, and polyurethane.
Champion Inks® — Flexible. Durable. Flawless Printing.
