Sinomer® 4-HBA

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Sinomer® 4-HBA

4-Hydroxybutyl acrylate, CAS 2478-10-6, hydroxyl functional acrylate, water-soluble UV 单体

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 快速固化 speed, 低气味, low skin irritation, and excellent weatherability. Its homopolymer has a very low glass transition temperature (Tg) of -65°C, which imparts exceptional 柔韧性, scratch resistance, and acid rain resistance to cured coatings and films. It is also water-soluble, making it suitable for 水性 UV systems.

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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:

产品概述 :

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 快速固化 speed, 低气味, low skin irritation, and excellent weatherability. Its homopolymer has a very low glass transition temperature (Tg) of -65°C, which imparts exceptional 柔韧性, scratch resistance, and acid rain resistance to cured coatings and films. It is also water-soluble, making it suitable for 水性 UV systems.

Standard :

Appearance

透明液体

Color (APHA)

≤ 20

Acid Value

≤ 1.0 mg KOH/g

Viscosity @ 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


性能特点 :
  • Dual Functional Groups: Contains a polymerizable double bond and a reactive hydroxyl group in a single molecule.

  • Excellent 柔韧性: Very low homopolymer Tg (-65°C) significantly enhances the 柔韧性 of cured polymers.

  • 快速固化 Speed & High Reactivity: The free hydroxyl group improves low-temperature curability.

  • Enhanced Material Properties: Improves scratch resistance, 附着力, 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 水性 UV涂料.

  • Good Weatherability: Provides long-term durability against environmental factors.


应用体系 :
  • Synthetic Chemical Intermediates

  • Synthetic Resins

  • 木器涂料

  • 塑料涂料

  • Clear Overcoat Varnishes

  • UV光固化 Adhesives (improves 附着力 strength and durability)

  • 水性 UV涂料

包装 :

● 25 公斤,200kgs/桶.


贮存 :

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