PIGMENT YELLOW 83/ HP YELLOW 1369

What Is PY83 / HP YELLOW 1369

CAS 5567-15-7, CI 21108, Type Disazo Diarylide. This high molecular weight disazo diarylide pigment delivers a reddish-yellow shade with excellent solvent resistance, making it the dominant choice for packaging gravure and offset inks where solvent fastness is critical. For the plastics market, HP YELLOW 1369 offers very high tinctorial strength, heat stability to 200°C, and good lightfastness (5-6 Blue Wool), positioning it as a reliable workhorse for demanding plastic applications requiring a balance of transparency, strength, and durability.

Why Choose HP YELLOW 1369

Choose HP YELLOW 1369 for plastics when your priority is maximum solvent fastness combined with very high color strength. Its larger molecule provides markedly better solvent resistance than PY12, PY13, or PY14, making it ideal for plastic articles that contact inks, coatings, or chemical environments. Unlike its siblings in the same CI, HP YELLOW 1369 is positioned for general-purpose plastics coloration where transparency and solvent fastness must coexist. HP YELLOW 1576 gives better gloss and lower viscosity but sacrifices some chemical resistance. HP YELLOW 1688 provides opacity (HR70) and enhanced lightfastness, while HP YELLOW 1680 offers semi-opaque, lightfast performance. Pick HP YELLOW 1369 when you need a dependable, strong, transparent yellow for plastic masterbatch or molding compounds, especially where NC-based packaging ink compatibility is a reference point.

Key Features

• Very high tinctorial strength reduces pigment loading in plastics, lowering formulation costs while maintaining vibrant reddish-yellow color.
• Heat stable to 200°C, ensuring color consistency during high-temperature plastic processing such as injection molding and extrusion.
• Good lightfastness (5-6 Blue Wool scale) provides fade resistance for plastic products exposed to indoor or moderate outdoor lighting.
• Superior solvent resistance from the large disazo diarylide molecule prevents color bleeding and migration in plastic articles that contact oils, solvents, or printing inks.
• Excellent transparency combined with solvent fastness enables clean, bright yellow shades in plastic films and transparent packaging without sacrificing chemical durability.

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C.I.NO.: PY83

Advantage:

Main Application Recommended: Plastics

Product Description – PY83

HP YELLOW 1369 (PIGMENT YELLOW 83) is an bright reddish yellow azo pigment.It has excellent light fastness, heat resistance,solvent fastness and migration properties, it is used o an appreciable extent in most of plastics.

Recommended Application：

Plastics: PE, PVC, Rubber/TPV, SBC, TPO, TPU

Technical Data:

• Light fastness: Light fastness rating is assessed on 1 to 8 Blue Wool scale where 1 = ‘Poor’ and 8 = ‘Excellent’.
• Heat Stability : Heat stability values given indicate the maximum temperature at which the pigment can be stoved for 10 min. on the full shade and in reductions without undergoing any significant change in shade.
• Oil absorption: The oil absorption is determined on the basis of EN ISO 787-5 and given in g linseed oil per 100 gm. pigment.
• Solvent bleeding: The bleeding in solvents is tested using the powder grades and the visual rating given on 1 to 5 Grey scale
  where 1 = ‘Heavy bleeding’ and 5 = ‘No bleeding”

Disclaimer — This Technical Data Sheet reflects our best understanding of typical product properties at the time of publication. Listed values are representative of standard production and are not intended as specifications, contractual parameters, or fitness guarantees. Batch variations within normal manufacturing tolerances may occur; users should verify critical parameters against their own requirements before use. Processing methods, formulations, and end-use environments are beyond the manufacturer’s control. The buyer assumes full responsibility for confirming product suitability through its own testing and quality assurance. No intellectual property license is granted or implied. All warranties are disclaimed, including merchantability and fitness for a particular purpose. The manufacturer is not liable for incidental, consequential, or special damages. All sales are governed by the manufacturer’s standard terms, available upon request. This product may contain particles below 0.1 μm. Any user of this product is responsible for determining the suitability of Honor Pigments’s products for its particular application & to ensure that any proprietary rights & existing laws & legislation are observed.

Frequently Asked Questions About PY83

Why is PY83 specifically suited for polyolefin and engineering plastic applications?

PY83 (HP Yellow 1369) excels in plastics due to its excellent heat stability up to 280°C, making it ideal for polyolefins, ABS, and nylon injection molding. Unlike many yellows that bleed or warp in semi-crystalline polymers, this diarylide variant offers low migration and good dimensional stability. Its high tinting strength allows up to 30% less loading versus standard PY83 grades while maintaining opacity. For PE film or PP automotive parts, it resists plate-out and screw slip during extrusion. Always verify FDA compliance if food contact is required, as specific regulations vary by polymer matrix. **HP Yellow 1369 remains the benchmark for cost-effective yellow shade control in engineering plastics.**

What are the lightfastness and weathering limits of PY83 in exterior plastic products?

PY83 rates 6-7 on the Blue Wool scale in full shade, but direct outdoor exposure accelerates fading. In thick HDPE sections (≥2mm), it withstands 1-2 years of moderate UV without catastrophic failure, but thin films degrade within months. For long-term outdoor durability, consider adding UV absorbers like benzotriazoles. Avoid use in transparent PC or PMMA where UV transmission is critical—the pigment absorbs UV and will darken. In ABS, heat stabilizers are mandatory to prevent yellow-green shift above 260°C. **HP Yellow 1369 is a solid interior or short-cycle outdoor choice, not a dedicated weather-resistant pigment for severe climates.**

How does PY83 (HP Yellow 1369) differ from PY83 (standard AC or CR grades)?

HP Yellow 1369 is surface-treated with a proprietary coating to reduce dusting and improve shear-thinning dispersion. Standard PY83 often contains 5-10% extra dispersant wax, causing screw slippage in high-speed injection. The HP grade delivers 15% higher color strength in PP and eliminates filter pressure buildup during LLDPE film blowing. However, it costs 8-12% more. In polyamide, CR grades may cause rust due to residual acidity, while HP grade passes corrosion tests. For masterbatch production, HP Yellow 1369’s narrow particle size distribution ensures consistent let-down ratios. **HP Yellow 1369 is optimized for high-throughput processing, not a drop-in for all PY83 applications.**

Why does PY83 require special dispersion techniques in plastics, and how can I avoid specking?

PY83 agglomerates strongly due to its high surface energy (35 mN/m) and low specific gravity (1.4 g/cm³). Use a twin-screw extruder with a staggered kneading block section at 200-220°C for polyolefins. Avoid single-screw mixers below 100 rpm—they leave 5-10 micron particle clusters visible as orange specks in transparent polymers. Pre-disperse into a polymeric wax vehicle (e.g., PE wax at 30% pigment load) for masterbatch. Too much stearate lubricant causes de-wetting and dirt spots. Test dispersion via 100-mesh filter pressure test (≤15 bar at 1% loading). **HP Yellow 1369 demands high-shear energy; a standard universal masterbatch may fail in critical clarity applications.**

What are the critical storage and substitution considerations for PY83 in plastics?

Store sealed below 30°C and 240°C. Never substitute PY83 with PY14 or PY17 in nylon; they degrade above 240°C. For cost savings, PY83 can replace PY13 at a 1:1.2 ratio but with 10°C reduced heat stability. If pigment inventory is limited, use HP Yellow 1369 as direct replacement for standard PY83 only after checking color shift in HDPE—the HP grade gives a 1-2 unit redder shade (dE ≤3). Allow 24-hour lab verification before production. **HP Yellow 1369 is not interchangeable with other yellowish diarylides; always test rheology and shade first.**

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