The Eastman Eastotac H series comprises Olefin Resin engineered for high-performance adhesives, coatings, and specialty formulations. Utilizing advanced hydrogenation technology, these resins achieve superior thermal stability (softening points up to 130°C) and water-white to low-color clarity (Gardner melt color ≤8), ensuring compatibility with UV-sensitive and aesthetic-critical applications.
Designed for versatile compatibility, the resins integrate seamlessly with SBS, SIS, EVA elastomers, and tackifiers, optimizing adhesion strength and processability in hot-melt adhesives, pressure-sensitive tapes, and automotive coatings.
Enhanced flow properties ensure stable processing in solvent-based or molten systems, while maintaining eco-friendly profiles.
High-temperature stability: Maintains performance with softening points up to 130°C, suitable for demanding environments.
Optical excellence: Low color index and water-white clarity ensure aesthetic appeal for transparent or light-colored products.
Rapid curing: Designed for high-speed production efficiency in adhesive and coating applications.
Durability: Superior UV and oxidation resistance for extended outdoor service life.
Material compatibility: Broad adaptability with elastomers, polymers, and rubber systems.
Hot-melt adhesives: Packaging, hygiene products (diapers, sanitary napkins), and food-grade bonding.
Coating modification: Enhances weather resistance, adhesion, and durability for UV coatings and automotive finishes.
Pressure-sensitive tapes: Improves tack and performance in electronic and high-temperature industrial tapes.
Rubber and tire products: Upgrades sealants, butyl rubber, and tire bonding performance.
| Model | Chemical Composition/Type | Softening Point | Compatibility |
| Eastotac H-142W | Hydrogenated hydrocarbon resin | 142°C | EVA/SBS/SIS/SEBS/Natural Rubber |
| Eastotac H-142R | Hydrogenated Hydrocarbon Resin | 142°C | SBS/EVA/Acrylic/Rubber, etc. |
| Eastotac H-130W | Hydrogenated Hydrocarbon Resin | 130°C (Ring & Ball) | EVA/SBS/SIS/Acrylic Elastomers & Tackifiers |
| Eastotac H-130R | Hydrogenated Hydrocarbon Resin | 130°C | EVA/SBS/SIS/Acrylic Polymers |
| Eastotac H-130L | Hydrogenated Hydrocarbon Resin | 130°C | EVA/SBS/SIS/Rubber Polymer Systems |
| Eastotac H-130E | Hydrogenated Hydrocarbon Resin | 130°C | EVA/SBS/SIS/Rubber Polymer Systems |
| Eastotac H-115W | Hydrogenated C5 Petroleum Resin | 115°C | EVA/SBS/SIS/Acrylic Elastomers & Tackifiers |
| Eastotac H-115R | Hydrogenated Hydrocarbon Resin | 115°C | APAO, SIS, SEBS Elastomers & Tackifiers |
| Eastotac H-115L | Hydrogenated Hydrocarbon Resin | 115°C | SBS/SIS/EVA/Natural Rubber Elastomers & Tackifiers |
| Eastotac H-115E | Hydrogenated Hydrocarbon Resin | 115°C | SBS/SIS/EVA/Natural Rubber Elastomers & Tackifiers |
Q1: What are the primary functional benefits of Eastotac H in adhesive formulations?
A: Eastotac H enhances tack, peel adhesion, and heat resistance in hot-melt and pressure-sensitive adhesives. Its narrow molecular weight distribution contributes to consistent melt viscosity and improved cohesive strength without excessive brittleness.
Q2: How does Eastotac H compare to other olefin-based resins in terms of compatibility with polymers and waxes?
A: Eastotac H exhibits broad compatibility with ethylene–vinyl acetate (EVA), styrenic block copolymers (e.g., SIS, SEBS), and paraffinic and microcrystalline waxes. It generally integrates well without phase separation when properly melted and mixed under standard processing conditions.
Q3: Is Eastotac H suitable for food-contact adhesive applications?
A: Eastotac H is designed for use in adhesive systems intended for indirect food contact, subject to compliance with applicable regional regulatory requirements. Formulators should validate final product compliance based on the full formulation, processing conditions, and end-use scenario.
Q4: What is the typical recommended dosage range for Eastotac H in hot-melt adhesive formulations?
A: Dosage depends on formulation requirements and desired performance balance, but Eastotac H is typically used at low concentrations—generally ranging from 0.1% to 2% by weight—to modify tack and cohesion without significantly altering melt flow or thermal stability.
Q5: Can Eastotac H be used in solvent-based or water-based adhesive systems?
A: Eastotac H is primarily formulated for hot-melt applications due to its thermoplastic nature and solubility profile. While it may be dispersed in certain aqueous systems with appropriate surfactants or emulsifiers, it is not inherently soluble in water or common polar solvents and is not optimized for those platforms.
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