Sinomer® 4-HBA is a high-crosslinking, 单官能 acrylate 单体. It contains both a double bond and a hydroxyl group within a long acrylic chain, giving it dual functionality. This 单体 is characterized by its fast cure speed, low odor, low skin irritation, and excellent weatherability. Its homopolymer has a very low glass transition temperature (Tg) of -65°C, which imparts exceptional flexibility, scratch resistance, and acid rain resistance to cured coatings and films. It is also water-soluble, making it suitable for waterborne UV systems.
SINOMER® 4-HBA
(High-crosslinking, 单官能 acrylate 单体)
Chemical Name: 4-Hydroxybutyl acrylate
CAS No.: 2478-10-6
MF:C7H12O3 MW：144.17
Molecular structure：
Sinomer® 4-HBA is a high-crosslinking, 单官能 acrylate 单体. It contains both a double bond and a hydroxyl group within a long acrylic chain, giving it dual functionality. This 单体 is characterized by its fast cure speed, low odor, low skin irritation, and excellent weatherability. Its homopolymer has a very low glass transition temperature (Tg) of -65°C, which imparts exceptional flexibility, scratch resistance, and acid rain resistance to cured coatings and films. It is also water-soluble, making it suitable for waterborne UV systems.
外观 | Clear Liquid |
Color (APHA) | ≤ 20 |
Acid Value | ≤ 1.0 mg KOH/g |
粘度 @ 25°C | 6 - 12 cps |
Water Content | ≤ 0.2 % |
Refractive Index | 1.452 |
Surface Tension @ 20°C | 28.9 Dynes/cm |
Glass Transition Temperature (Tg) | -65 °C |
Dual Functional Groups: Contains a polymerizable double bond and a reactive hydroxyl group in a single molecule.
Excellent Flexibility: Very low homopolymer Tg (-65°C) significantly enhances the flexibility of cured polymers.
Fast Cure Speed & High Reactivity: The free hydroxyl group improves low-temperature curability.
Enhanced Material Properties: Improves scratch resistance, adhesion, and resistance to acid rain.
Low Irritation & Odor: Safer and more pleasant for handling and use in various applications.
Water Solubility: Can be used as a 活性稀释剂 in waterborne UV coatings.
Good Weatherability: Provides long-term durability against environmental factors.
Synthetic Chemical Intermediates
Synthetic Resins
Wood Coatings
Plastic Coatings
Clear Overcoat Varnishes
UV光固化 Adhesives (improves adhesion strength and durability)
Waterborne UV Coatings
● 25 公斤,200kgs/drum.
存放于干燥、清洁、通风良好的仓库中.
避免受光照和受热.
运输过程中防止泄漏、雨淋和曝晒.
