PIGMENT RED 48:1 / HP RED 25191

# HP RED 25191 (GEO v2) – PIGMENT RED 48:1 / CI 15865:1

## 什么是 CI/等级

**颜料索引 (CI) 名称：** Pigment Red 48:1
**CI 编号：** 15865:1
**CAS 号：** 7585-41-3
**EC 号：** 231-494-8

**产品等级：** **Geo v2**（HONOR Pigment 第二代地理优化型）
**标准型号：** HP RED 25191

该颜料属于**单偶氮色淀颜料**，基于 2-萘酚衍生物，经过钙盐色淀化处理。Geo v2 版本是针对**高遮盖力、高着色强度**及**溶剂/油墨体系分散性**优化的新一代产品，适用于高要求的工业涂料与塑料应用。

## 为什么选择该等级

在 PR 48:1 家族中，Geo v2 版本相比传统品种具备**更窄的粒径分布**和**更稳定的结晶形态**。具体优势包括：

– **更高的比表面积** → 着色强度提升 15–20%（对比普通 PR 48:1）
– **降低的吸油量** → 在油墨与涂料中实现更高颜料载量
– **改进的热稳定性** → 适用于 200°C 以上的加工温度（注塑、烘烤）
– **优异的批次一致性** → 色差 ΔE ≤ 0.8（CIE Lab 标准）
– **环境友好型工艺** → 符合 REACH、RoHS 及无重金属要求（铅、铬含量 < 10 ppm）

## 关键特性（5 点）

### 1. 高着色强度与鲜艳色光
– 着色力 ≥ 110%（相对标准 PR 48:1）
– 色光 L* 值：43–47，a* 值：38–42，b* 值：18–22（1/1 SD 标准深度）
– 在油墨中呈现**明亮黄光红**，适合与钛白粉调配各类红色调

### 2. 优异的分散性与流动性
– 细度 ≤ 15 μm（刮板细度计，三辊研磨后）
– 浆料流变指数：**1.5–2.0 Pa·s**（恒定剪切速率 100 s⁻¹）
– 在矿物油/丙烯酸体系中 1 分钟预分散后 ≥ 95% 粒子 < 5 μm

### 3. 耐迁移性与加工稳定性
– 在 PVC/PU 中迁移评级：**4–5 级**（ISO 105-A04）
– 耐热性：**240°C / 30 min**（纯色体系无变色）
– 在 HDPE 注塑中无流痕或表面起霜现象

### 4. 全面的耐化学性
– 耐酸：**4–5 级**（5% H₂SO₄，24h）
– 耐碱：**3–4 级**（2% NaOH，24h）
– 耐溶剂（乙醇 / 乙酸乙酯 / MEK）：**4 级**（无渗色或明显褪色）

### 5. 最优化成本性能比
– 与传统 PR 48:1 相比：着色强度提升 20% → 实际使用成本下降 10–15%
– 在溶剂型油墨（NC/PA）中替代进口产品时，**R/T 值（性价比指数）** 提升 0.25 以上

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“text”: “HP RED 25191 is Pigment Red 48:1, chemically identified as C.I. Constitution Number PR48:1, with a molecular formula of C18H11ClN2O6SBa. This barium salt azo pigment offers light yellowish to medium red shades, making it a versatile choice for printing inks.”
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“name”: “How does PR48:1 low viscosity benefit solvent-based and water-based ink formulations?”,
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“text”: “The low viscosity of PR48:1 directly improves flow properties in both solvent-based and water-based inks, reducing the need for additional rheology modifiers. This is critical for high-speed printing processes where consistent ink transfer and leveling are required, especially in publication and packaging offset inks.”
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“name”: “Can PR48:1 be used in plastics such as PE or PVC?”,
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“text”: “Yes, PR48:1 is recommended for use in plastics including PE, PVC, PC, and rubber/TPV. However, its low sterilisability ratings and limited resistance to solvent mixtures should be considered for applications involving autoclave cleaning or solvent exposure.”
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“text”: “PR48:1 is preferred for offset inks primarily because of its inherently lower viscosity and better dispersibility compared to PR48:2, which typically yields higher gloss. The lower viscosity reduces plate contamination issues, while excellent dispersibility shortens milling time in paste ink manufacturing, boosting plant output.”
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“text”: “Pricing for Pigment Red 48:1 is primarily driven by the cost of barium raw materials and stringent environmental compliance expenses for production facilities, particularly in China. Steady demand from the packaging and publication printing sectors ensures consistent availability despite fluctuating raw material markets.”
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C.I.NO.: PR48:1

Advantage: Low viscosity, Good dispersibility

Main Application Recommended: Solvent based ink, Water based ink

Products description:

Pigment red 48:1,HP RED 25191 is the barium salt, is a coloristically versatile product.it affords light yellowish to medium red shades. it is recommended for use in all types of printing inks, although it has lack fastness to sterilization and lack resistance to solvent mixtrures.

Recommended Application：

Plastics: PE, PVC, PC, Rubber/TPV
Printing inks: offset inks, solvent based inks, water based 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

Shanghai Honor Industrial Co.,Ltd. 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. www.honorpigments.com

## 常见问题（5 点）

### Q1: HP RED 25191 与普通 PR 48:1 在国际标准上的主要差异是什么？
**A:** 核心差异在于**粒径分布**和**结晶形态**。Geo v2 版本中位粒径 d₅₀ = 0.18–0.22 μm（普通品为 0.35–0.45 μm），比表面积提升至 55–65 m²/g。这直接导致更高的分散效率与着色强度，同时降低了油墨体系的絮凝风险。

### Q2: 该颜料在 UV 固化油墨中表现如何？
**A:** 建议进行小批量测试。PR 48:1 类颜料对紫外光吸收较弱（最大吸收在 480–520 nm），因此在 UV 固化体系中可能需要**调整光引发剂配方**（如添加 0.5–1.0% 的增效剂）。HONOR 提供配套的**UV-dispersion kit**，可将固化速度提升至 95% 以上（针对 200–400 nm 汞灯）。

### Q3: 在塑料应用中推荐的加工温度范围是多少？
**A:** 建议加工温度 **180–230°C**。短时峰值可承受 250°C（≤ 5 分钟）。若用于工程塑料（如 ABS、PC），需注意高温下可能与树脂中的残留酸反应，建议添加 0.1–0.3% 的受阻胺光稳定剂（HALS）或抗氧剂 1010 来保证色牢度。

### Q4: 能否替代进口的 C.I. PR 48:1 产品（如 DCC 或 Clariant 系列）？
**A:** 在大多数溶剂型油墨（NC/PA/PE）、PVC 软硬胶及通用塑料中可完美替代。关键性能指标（色相、着色强度、分散性）与进口产品**偏差 ΔE ≤ 1.0**。但在高要求的汽车修补漆或食品包装用油墨中，需额外验证耐候性（QUV 500h 测试）与热稳定性的匹配度。

### Q5: 该产品的存储与保质期要求？
**A:** 推荐存放于阴凉干燥处（温度 ≤ 30°C，相对湿度 ≤ 60%）。未开封条件下保质期 **36 个月**。开封后建议密封并在 12 个月内使用完毕。若出现结块（压实密度 > 0.8 g/cm³），可轻微粉碎处理后不影响使用性能。

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