Overview
Pigment paste is a high-concentration colorant system where pigments are pre-dispersed in a carrier medium. Unlike powder pigments, pastes offer easier handling and better dispersion in final applications. They are classified as either water-based or solvent-based formulations, with the former being more environmentally friendly. The technology originated in the mid-20th century as industries sought more efficient coloring methods. Modern pigment pastes typically contain 30-70% pigment content by weight, along with dispersing agents and stabilizers. They serve as intermediates between raw pigments and ready-to-use coloring systems, significantly reducing processing time in manufacturing. Quality pastes exhibit excellent color strength and stability over time.
Physical and Chemical Properties
The viscosity of pigment pastes generally ranges between 500-5,000 cP at 25°C, depending on the pigment concentration and carrier fluid. pH values vary from 7-10 for water-based formulations. Key performance indicators include fineness of grind (typically <10μm), bleed resistance, and compatibility with various resin systems. Chemically, pastes demonstrate good stability under normal conditions but may separate if stored improperly. Most commercial products have shelf lives of 12-24 months when stored between 5-35°C. Lightfastness ratings depend on the pigment type, with inorganic pigments generally outperforming organic variants in outdoor applications.
Main Applications
In the paint industry, pigment pastes are used for tinting base paints to achieve custom colors, offering advantages over powder pigments in terms of dust reduction and mixing efficiency. The textile sector utilizes them for printing and dyeing processes, where precise color matching is critical. The plastics industry employs specialized heat-stable pastes for coloring PVC, polyethylene, and other polymers. Printing inks represent another major application, particularly for packaging and publication gravure inks. Recent developments include UV-curable pastes for digital printing applications.
Safety and Storage
While generally safer than powder pigments, pastes still require careful handling. Water-based formulations may contain preservatives that can cause skin irritation, while solvent-based types require proper ventilation due to VOC emissions. Always consult the SDS for specific handling instructions. Storage should be in original, tightly sealed containers away from extreme temperatures. Freezing can cause irreversible separation, while excessive heat may accelerate settling. Containers should be rotated regularly to maintain homogeneity. Spill containment measures should be in place for large quantities.
B2B Procurement Guide
Industrial buyers should specify requirements including color index number, viscosity range, pH tolerance, and compatibility with their base materials. Request samples for lab testing before large orders to verify performance in actual production conditions. Consider suppliers who provide technical support for color matching and troubleshooting. Bulk purchasing (drums or totes) typically offers 15-30% cost savings over small containers. For global sourcing, verify that formulations comply with regional regulations like REACH or FDA requirements for specific applications.
Related Manufacturers
- 主营：胶粘剂、耐热强力胶、环氧树脂胶、环氧强力胶、透明环氧胶、强力粘合胶水、鞋胶专用胶水、珠宝专用胶水
- 主营：玻璃纤维布、玻璃钢树脂、玻璃钢固化剂、玻璃钢色浆、玻璃钢胶衣、玻璃纤维短切毡、玻璃纤维表面毡、防腐涤纶布、玻璃纤维针织毡、聚酯表面毡、乙烯基树脂、环氧树脂、拉挤树脂、不饱和聚酯树脂、模压树脂、手糊树脂、缠绕树脂、真空导入树脂、玻璃钢脱模油、过氧化甲乙酮、过氧化苯甲酸叔丁酯、异辛酸钴、玻璃纤维纱线、碳纤维表面毡
- 主营：胶带保护膜色浆/油墨、光固化UV色浆、增塑剂色浆、氟碳色浆、伞布帐篷布色浆、导电色浆、发泡色浆、密封胶色浆、遮光色浆、3D打印树脂
- 主营：水性荧光果、洗涤日化染料、水性荧光黄绿
- 主营：点胶机、罐装机、震荡机、涂料调色机
- 主营：高温胶、保护膜、粘胶带、散热片、锂电池、面胶带、电池膜、失粘膜、高温膜、硅胶带、切割膜、解粘胶、解粘膜、黑白膜、固化膜、连接器、挂钩胶、冲压板、单双灯、石墨片、泡棉胶、石墨粉、抗酸膜、铝塑膜、定位膜
- 主营：PVC色浆、PVC色膏、水性色浆、PVA色浆、油性色浆、有机颜料、染料
- 主营：聚硫密封胶、铝酸盐无机防腐砂浆、环氧沥青防腐漆、硫磺锚固砂浆、沥青胶泥、高强耐磨料、环氧树脂砂浆、铁基合金自流平砂浆、不发火细石混凝土、环氧玻璃鳞片胶泥、环氧腻子、防辐射砂浆、微膨胀水泥砂浆、沥青砂浆、防油渗胶泥、亲水沥青冷补料、不发火水泥砂浆、环氧胶泥、聚氨酯防水涂料、DPS永凝液、混凝土表面增强剂、铁屑砂浆、防静电不发火砂浆、灌浆料
- 主营：抗氧剂、光稳定剂、消泡剂、紫外线吸收剂、碳黑、白炭黑、颜料、染料、树脂、表面活性剂、消光粉、增塑剂、分散剂、光引发剂、钛白粉、固化剂
- 主营：水性通用色浆、油性通用色浆、UV纳米色浆、纳米固化地坪漆
- 主营：化工产品、树脂、表面活性剂、乳化剂、消泡剂、硅油、柔软剂、固化剂、抗静电剂、脱膜剂、起泡剂、水性材料、种子包衣、化妆品级原料、油包水乳化剂、水包油乳化剂、异构十二烷、金属脱膜剂、水性硬脂酸锌、塑料抗静电剂、环氧树脂固化剂、棉麻柔软剂、甲基硅油、水溶性硅油、CAB系列起泡剂
- 主营：预缩机、缩水机、点胶机、压花机、无缝内衣、护膝硅胶、12色滴塑机、织带整烫机、鞋底流水线、织带压纹机、内衣裁片硅胶、KPU机、滴塑机、商标机
- 主营：蓝颜料、黄色粉、生态砼、红色浆、地坪灰、混凝土、地坪绿、填缝剂、勾缝剂、透水砖、氧化铁、沥青油、增强剂、胶粘砼、绿色粉、铁红粉、铁黑粉、着色剂、铁棕粉、氧化铁红、氧化铁黄、氧化铁绿、氧化铁蓝
- 主营：杀菌剂、酸性清洗剂、碱性清洗剂、色浆、过氧乙酸消毒剂、憎水剂、保水剂、渗透剂、夜光粉、醋酸钠、高铁酸钾、硫代硫酸钠、鱼塘增氧片、过硫酸氢钾、聚合硫酸铁、植物除臭剂、水玻璃、道路修补料、液体蛋氨酸、桐油、聚合氯化铝、聚丙烯酰胺、一乙醇胺、防冻粉
- 主营：表面活性剂、十二烷基苯磺酸钠、重烷基苯磺酸钠、三乙醇胺油酸皂、三乙醇胺硼酸酯、甲基硅酸钠、甲基硅酸钾、二乙烯三胺五乙酸五钠、乙氧基化烷基硫酸钠、乳化剂、纳米碳酸钙、聚乙二醇硼酸酯、油酸钾、有机硅消泡剂、二苯醚二磺酸钠、十二烷基硫酸钠、聚氯乙烯、AES、松香引气剂、二乙烯三胺五乙酸、α-烯基磺酸钠