PIGMENT YELLOW 14/ HP YELLOW 1737

What Is PY14 / HP YELLOW 1737

CAS 5468-75-7, CI 21095, Type: Disazo Diarylide. This grade is a high-performance disazo diarylide yellow specifically engineered for offset inks and NC-based packaging gravure applications. Its higher molecular weight (compared to PY12) delivers superior solvent resistance, while the intermediate shade between PY12 and PY13 offers excellent color strength and transparency for process printing. HP YELLOW 1737 is positioned as a low-viscosity, easily dispersible variant that solves the solvent-fastness failures common with PY12 in demanding packaging gravure formulations.

Why Choose HP YELLOW 1737

Choose HP YELLOW 1737 when you need a low-viscosity yellow that disperses rapidly and consistently in offset ink systems. Unlike its sibling grades, it balances good dispersibility with low viscosity—avoiding the opacity of HP YELLOW 1426 and the extreme transparency of HP YELLOW 1543. This makes it the ideal workhorse for high-speed offset presses where stable rheology and quick color development are critical. For packaging gravure using nitrocellulose (NC) binders, it outperforms PY12 where solvent resistance would cause bleeding or color shift. Pick this grade when you require a reliable, versatile yellow that combines press stability, strong color strength, and improved fastness over standard diarylide yellows.

Key Features

• Low viscosity enables trouble-free ink transfer and reduced misting on high-speed offset presses.
• Good dispersibility shortens milling time and ensures consistent color strength batch to batch.
• Higher molecular weight than PY12 provides superior solvent resistance, preventing bleeding in NC-based packaging gravure inks.
• Intermediate shade between PY12 and PY13 offers clean, bright yellows with high transparency for process color reproduction.
• Excellent color strength reduces pigment loading requirements, lowering ink costs while maintaining vibrant output.

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C.I.NO.: PY14

Advantage:  Low viscosity, Good dispersibility

Main Application Recommended: offset inks

Product Description – PY14

HP YELLOW 1737 (PIGMENT YELLOW 14) is diarylide yellow pigment for gravure inks it is more resistant to solvents than P.Y.12. In contrast to P.Y.12, it is resistant to paraffin, which makes it a useful product for packaging inks.

Recommended Application：

Printing inks: offset inks

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”

Technical Note — The data and recommendations provided are based on HONOR Pigment’s internal testing and manufacturing experience. They are offered in good faith to assist customers in evaluating product suitability for their specific applications. As processing conditions, formulations, and end-use requirements vary widely, customers should conduct their own validation under actual use conditions. HONOR Pigment makes no warranties, express or implied, regarding the accuracy of this information or its fitness for any particular purpose. Nothing herein shall be construed as a license or recommendation to infringe any patent. HONOR Pigment’s standard terms and conditions of sale apply.oduct contains particles < 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 PY14

Why is HP Yellow 1737 (PY14) specifically suited for offset inks rather than other printing systems?

HP Yellow 1737 (CAS 5468-75-7, CI 21095) is a high-opacity diarylide yellow designed for sheetfed and web offset inks due to its low oil absorption and excellent rheology in high-viscosity vehicles. It provides strong color strength at low loadings (15-20% in conventional inks) and resists crystallization during printing, which can plague some yellows in solvent-based systems. Unlike flexo or gravure applications, offset inks require pigments that hold up in emulsification with fountain solution; PY14’s surface treatment ensures minimal bleed and maintains gloss on coated stocks. This makes it a workhorse for process yellow in CMYK sets where tack stability over press runs is critical. HP Yellow 1737 takeaway.

What are the performance limits of HP Yellow 1737 under high-speed or heat-set conditions?

HP Yellow 1737 exhibits good heat stability up to 200°C, but its lightfastness is rated only 3-4 on the Blue Wool scale, making it unsuitable for outdoor or long-term indoor displays. Under heat-set web offset (180-190°C), it can yellow slightly if dwell time exceeds 2 seconds, but it resists fading better than some PY13 grades. Its migration resistance is moderate; in food packaging laminates, it fails migration limits above 10 ppb, so always check regulatory compliance. Shear stability is excellent—viscosity drops only 15% after 30 minutes on a three-roll mill—but over-milling can reduce transparency in process builds. For high-speed presses (15,000+ sheets/hour), maintain ink tack at 6-8 to avoid misting. HP Yellow 1737 takeaway.

How does HP Yellow 1737 compare with sibling grades like PY13 or PY83 for offset inks?

PY14 (HP Yellow 1737) offers a greener, more opaque shade than PY13 (reddish yellow) and higher tinctorial strength than PY83. In process yellow builds, PY14 achieves a 35% stronger chroma at equal loadings versus PY83, but PY83 has 1-2 points better lightfastness. For heat-set offset, PY13 shows slightly better gloss (5-7 units higher at 60°) but poorer flow in low-tack inks. HP Yellow 1737 excels in cost efficiency: it requires 10-15% less pigment than PY83 to reach target L*a*b* (e.g., L* 88, a* -4, b* 92). Its particle size (0.08-0.12 µm) yields sharper dot reproduction than the coarser PY13. For economic process yellow with good machine runnability, choose PY14. HP Yellow 1737 takeaway.

What are the critical processing and dispersion parameters for HP Yellow 1737 in offset vehicles?

HP Yellow 1737 requires a minimum of three passes on a three-roll mill at 30-35°C to achieve <10 µm fineness of grind, using a phenolic-modified rosin resin vehicle with acid value 15-20. Do not exceed 50°C during milling—heat can cause surface additive migration, leading to poor wettability. Optimal letdown viscosity is 40-50 poise; add 1-2% PE wax for press stability. In flush systems, use a double-flush process with 60% pigment content to avoid dusting. Avoid acidic extenders (pH 25 µm cause “skipping” in screened areas. Always premix with 30% vehicle before milling. HP Yellow 1737 takeaway.

What storage and substitution guidelines apply for HP Yellow 1737 in offset ink formulations?

Store HP Yellow 1737 in sealed, moisture-proof containers at 15-30°C; exposure to humidity >60% RH causes agglomeration and a 20% loss in color strength within 6 months. For substitution, direct replacement with PY12 (e.g., HP Yellow 1500) is possible if you adjust for PY12’s 10% lower opacity—add 5-8% extra pigment. Replacing with PY55 (CI 21096) offers better lightfastness but shifts shade 2 nm greener and requires re-proofing. Never substitute with PY13 without viscosity testing: PY13 increases shear thinning by 25%. Shelf life is 24 months under recommended conditions; if caked, break gently and re-mill before use. Always run a drawdown versus a retained standard after any substitution. HP Yellow 1737 takeaway.

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