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High chroma and excellent lightfastness for vibrant, durable yellow coloration.
Outstanding thermal stability suitable for high-temperature processing up to 280 °C.
Good dispersibility in both polar and non-polar polymer systems.
Complies with major global regulatory frameworks including REACH and RoHS.
Low volatility and minimal migration in demanding end-use applications.
Polyolefin compounds (PP, PE) for automotive interior parts and packaging.
Engineering plastics including ABS, PS, and PC for consumer electronics housings.
Masterbatch formulations for fiber and film extrusion processes.
Color concentrates used in injection-molded household appliances and industrial components.
Coating systems requiring weather-resistant yellow pigmentation.
| Chemical Type | Disazo pigment (Pigment Yellow 12) |
| Product Form | Fine powder |
| Appearance | Yellow to orange-yellow free-flowing powder |
| Primary Applications | Polyolefins, engineering plastics, masterbatches |
| Key Features | High tinctorial strength, excellent heat stability, low bleed |
| Benefits | Consistent color match, process robustness, regulatory compliance |
| Recommended Processing Temperature Range | Up to 280 °C |
| Regulatory Status | REACH registered; RoHS compliant; non-heavy-metal |
Q1: What is the primary chemical class and pigment type of Hostaperm Yellow H4G?
A: Hostaperm Yellow H4G is a high-performance, polycyclic yellow pigment belonging to the isoindolinone chemical class. It is classified as an organic pigment with excellent lightfastness, thermal stability, and weather resistance.
Q2: In which polymer systems is Hostaperm Yellow H4G most commonly used?
A: This pigment is widely used in engineering thermoplastics such as polyamide (PA), polybutylene terephthalate (PBT), and polyethylene terephthalate (PET), especially where high-temperature processing and long-term color stability are required. It is also suitable for use in certain high-performance coatings and masterbatches.
Q3: How does Hostaperm Yellow H4G perform under high-shear and high-temperature processing conditions?
A: Hostaperm Yellow H4G exhibits excellent dispersion stability and resistance to thermal degradation during extrusion, injection molding, and other high-temperature compounding processes. Its robust molecular structure helps maintain color strength and hue consistency even under demanding processing conditions.
Q4: Is Hostaperm Yellow H4G suitable for food-contact or regulatory-sensitive applications?
A: Hostaperm Yellow H4G is not approved for direct food-contact applications under major global regulatory frameworks. It is intended for industrial and technical uses where regulatory compliance for migration or toxicity is not required. Always consult Clariant’s latest regulatory documentation and conduct application-specific testing before use in regulated environments.
Q5: What is the typical dosage range when using Hostaperm Yellow H4G in polymer systems?
A: Dosage depends on the specific formulation, desired shade intensity, and substrate transparency. In most engineering plastics, it is typically used at low concentrations—generally ranging from 0.1% to 2% by weight—with optimal performance often achieved in the lower half of this range.
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